omap4: make omap4 code common for future reuse
Much of omap4 soc support code can be reused for omap5.
Move them to the omap-common directory to facilitate
this.
Signed-off-by: sricharan <r.sricharan@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
diff --git a/arch/arm/cpu/armv7/omap-common/Makefile b/arch/arm/cpu/armv7/omap-common/Makefile
index 1dee81f..ea2545d 100644
--- a/arch/arm/cpu/armv7/omap-common/Makefile
+++ b/arch/arm/cpu/armv7/omap-common/Makefile
@@ -33,6 +33,13 @@
COBJS += gpio.o
endif
+ifdef CONFIG_OMAP44XX
+COBJS += hwinit-common.o
+COBJS += clocks-common.o
+COBJS += emif-common.o
+SOBJS += lowlevel_init.o
+endif
+
ifdef CONFIG_SPL_BUILD
COBJS += spl.o
ifdef CONFIG_SPL_NAND_SUPPORT
@@ -43,6 +50,12 @@
endif
endif
+ifndef CONFIG_SPL_BUILD
+ifdef CONFIG_OMAP44XX
+COBJS += mem-common.o
+endif
+endif
+
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))
diff --git a/arch/arm/cpu/armv7/omap-common/clocks-common.c b/arch/arm/cpu/armv7/omap-common/clocks-common.c
new file mode 100644
index 0000000..095ba39
--- /dev/null
+++ b/arch/arm/cpu/armv7/omap-common/clocks-common.c
@@ -0,0 +1,941 @@
+/*
+ *
+ * Clock initialization for OMAP4
+ *
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Aneesh V <aneesh@ti.com>
+ *
+ * Based on previous work by:
+ * Santosh Shilimkar <santosh.shilimkar@ti.com>
+ * Rajendra Nayak <rnayak@ti.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#include <common.h>
+#include <asm/omap_common.h>
+#include <asm/gpio.h>
+#include <asm/arch/clocks.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/utils.h>
+#include <asm/omap_gpio.h>
+
+#ifndef CONFIG_SPL_BUILD
+/*
+ * printing to console doesn't work unless
+ * this code is executed from SPL
+ */
+#define printf(fmt, args...)
+#define puts(s)
+#endif
+
+#define abs(x) (((x) < 0) ? ((x)*-1) : (x))
+
+struct omap4_prcm_regs *const prcm = (struct omap4_prcm_regs *)0x4A004100;
+
+static const u32 sys_clk_array[8] = {
+ 12000000, /* 12 MHz */
+ 13000000, /* 13 MHz */
+ 16800000, /* 16.8 MHz */
+ 19200000, /* 19.2 MHz */
+ 26000000, /* 26 MHz */
+ 27000000, /* 27 MHz */
+ 38400000, /* 38.4 MHz */
+};
+
+/*
+ * The M & N values in the following tables are created using the
+ * following tool:
+ * tools/omap/clocks_get_m_n.c
+ * Please use this tool for creating the table for any new frequency.
+ */
+
+/* dpll locked at 1840 MHz MPU clk at 920 MHz(OPP Turbo 4460) - DCC OFF */
+static const struct dpll_params mpu_dpll_params_1840mhz[NUM_SYS_CLKS] = {
+ {230, 2, 1, -1, -1, -1, -1, -1}, /* 12 MHz */
+ {920, 12, 1, -1, -1, -1, -1, -1}, /* 13 MHz */
+ {219, 3, 1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
+ {575, 11, 1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
+ {460, 12, 1, -1, -1, -1, -1, -1}, /* 26 MHz */
+ {920, 26, 1, -1, -1, -1, -1, -1}, /* 27 MHz */
+ {575, 23, 1, -1, -1, -1, -1, -1} /* 38.4 MHz */
+};
+
+/* dpll locked at 1584 MHz - MPU clk at 792 MHz(OPP Turbo 4430) */
+static const struct dpll_params mpu_dpll_params_1584mhz[NUM_SYS_CLKS] = {
+ {66, 0, 1, -1, -1, -1, -1, -1}, /* 12 MHz */
+ {792, 12, 1, -1, -1, -1, -1, -1}, /* 13 MHz */
+ {330, 6, 1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
+ {165, 3, 1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
+ {396, 12, 1, -1, -1, -1, -1, -1}, /* 26 MHz */
+ {88, 2, 1, -1, -1, -1, -1, -1}, /* 27 MHz */
+ {165, 7, 1, -1, -1, -1, -1, -1} /* 38.4 MHz */
+};
+
+/* dpll locked at 1200 MHz - MPU clk at 600 MHz */
+static const struct dpll_params mpu_dpll_params_1200mhz[NUM_SYS_CLKS] = {
+ {50, 0, 1, -1, -1, -1, -1, -1}, /* 12 MHz */
+ {600, 12, 1, -1, -1, -1, -1, -1}, /* 13 MHz */
+ {250, 6, 1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
+ {125, 3, 1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
+ {300, 12, 1, -1, -1, -1, -1, -1}, /* 26 MHz */
+ {200, 8, 1, -1, -1, -1, -1, -1}, /* 27 MHz */
+ {125, 7, 1, -1, -1, -1, -1, -1} /* 38.4 MHz */
+};
+
+static const struct dpll_params core_dpll_params_1600mhz[NUM_SYS_CLKS] = {
+ {200, 2, 1, 5, 8, 4, 6, 5}, /* 12 MHz */
+ {800, 12, 1, 5, 8, 4, 6, 5}, /* 13 MHz */
+ {619, 12, 1, 5, 8, 4, 6, 5}, /* 16.8 MHz */
+ {125, 2, 1, 5, 8, 4, 6, 5}, /* 19.2 MHz */
+ {400, 12, 1, 5, 8, 4, 6, 5}, /* 26 MHz */
+ {800, 26, 1, 5, 8, 4, 6, 5}, /* 27 MHz */
+ {125, 5, 1, 5, 8, 4, 6, 5} /* 38.4 MHz */
+};
+
+static const struct dpll_params core_dpll_params_es1_1524mhz[NUM_SYS_CLKS] = {
+ {127, 1, 1, 5, 8, 4, 6, 5}, /* 12 MHz */
+ {762, 12, 1, 5, 8, 4, 6, 5}, /* 13 MHz */
+ {635, 13, 1, 5, 8, 4, 6, 5}, /* 16.8 MHz */
+ {635, 15, 1, 5, 8, 4, 6, 5}, /* 19.2 MHz */
+ {381, 12, 1, 5, 8, 4, 6, 5}, /* 26 MHz */
+ {254, 8, 1, 5, 8, 4, 6, 5}, /* 27 MHz */
+ {496, 24, 1, 5, 8, 4, 6, 5} /* 38.4 MHz */
+};
+
+static const struct dpll_params
+ core_dpll_params_es2_1600mhz_ddr200mhz[NUM_SYS_CLKS] = {
+ {200, 2, 2, 5, 8, 4, 6, 5}, /* 12 MHz */
+ {800, 12, 2, 5, 8, 4, 6, 5}, /* 13 MHz */
+ {619, 12, 2, 5, 8, 4, 6, 5}, /* 16.8 MHz */
+ {125, 2, 2, 5, 8, 4, 6, 5}, /* 19.2 MHz */
+ {400, 12, 2, 5, 8, 4, 6, 5}, /* 26 MHz */
+ {800, 26, 2, 5, 8, 4, 6, 5}, /* 27 MHz */
+ {125, 5, 2, 5, 8, 4, 6, 5} /* 38.4 MHz */
+};
+
+static const struct dpll_params per_dpll_params_1536mhz[NUM_SYS_CLKS] = {
+ {64, 0, 8, 6, 12, 9, 4, 5}, /* 12 MHz */
+ {768, 12, 8, 6, 12, 9, 4, 5}, /* 13 MHz */
+ {320, 6, 8, 6, 12, 9, 4, 5}, /* 16.8 MHz */
+ {40, 0, 8, 6, 12, 9, 4, 5}, /* 19.2 MHz */
+ {384, 12, 8, 6, 12, 9, 4, 5}, /* 26 MHz */
+ {256, 8, 8, 6, 12, 9, 4, 5}, /* 27 MHz */
+ {20, 0, 8, 6, 12, 9, 4, 5} /* 38.4 MHz */
+};
+
+static const struct dpll_params iva_dpll_params_1862mhz[NUM_SYS_CLKS] = {
+ {931, 11, -1, -1, 4, 7, -1, -1}, /* 12 MHz */
+ {931, 12, -1, -1, 4, 7, -1, -1}, /* 13 MHz */
+ {665, 11, -1, -1, 4, 7, -1, -1}, /* 16.8 MHz */
+ {727, 14, -1, -1, 4, 7, -1, -1}, /* 19.2 MHz */
+ {931, 25, -1, -1, 4, 7, -1, -1}, /* 26 MHz */
+ {931, 26, -1, -1, 4, 7, -1, -1}, /* 27 MHz */
+ {412, 16, -1, -1, 4, 7, -1, -1} /* 38.4 MHz */
+};
+
+/* ABE M & N values with sys_clk as source */
+static const struct dpll_params
+ abe_dpll_params_sysclk_196608khz[NUM_SYS_CLKS] = {
+ {49, 5, 1, 1, -1, -1, -1, -1}, /* 12 MHz */
+ {68, 8, 1, 1, -1, -1, -1, -1}, /* 13 MHz */
+ {35, 5, 1, 1, -1, -1, -1, -1}, /* 16.8 MHz */
+ {46, 8, 1, 1, -1, -1, -1, -1}, /* 19.2 MHz */
+ {34, 8, 1, 1, -1, -1, -1, -1}, /* 26 MHz */
+ {29, 7, 1, 1, -1, -1, -1, -1}, /* 27 MHz */
+ {64, 24, 1, 1, -1, -1, -1, -1} /* 38.4 MHz */
+};
+
+/* ABE M & N values with 32K clock as source */
+static const struct dpll_params abe_dpll_params_32k_196608khz = {
+ 750, 0, 1, 1, -1, -1, -1, -1
+};
+
+
+static const struct dpll_params usb_dpll_params_1920mhz[NUM_SYS_CLKS] = {
+ {80, 0, 2, -1, -1, -1, -1, -1}, /* 12 MHz */
+ {960, 12, 2, -1, -1, -1, -1, -1}, /* 13 MHz */
+ {400, 6, 2, -1, -1, -1, -1, -1}, /* 16.8 MHz */
+ {50, 0, 2, -1, -1, -1, -1, -1}, /* 19.2 MHz */
+ {480, 12, 2, -1, -1, -1, -1, -1}, /* 26 MHz */
+ {320, 8, 2, -1, -1, -1, -1, -1}, /* 27 MHz */
+ {25, 0, 2, -1, -1, -1, -1, -1} /* 38.4 MHz */
+};
+
+static inline u32 __get_sys_clk_index(void)
+{
+ u32 ind;
+ /*
+ * For ES1 the ROM code calibration of sys clock is not reliable
+ * due to hw issue. So, use hard-coded value. If this value is not
+ * correct for any board over-ride this function in board file
+ * From ES2.0 onwards you will get this information from
+ * CM_SYS_CLKSEL
+ */
+ if (omap_revision() == OMAP4430_ES1_0)
+ ind = OMAP_SYS_CLK_IND_38_4_MHZ;
+ else {
+ /* SYS_CLKSEL - 1 to match the dpll param array indices */
+ ind = (readl(&prcm->cm_sys_clksel) &
+ CM_SYS_CLKSEL_SYS_CLKSEL_MASK) - 1;
+ }
+ return ind;
+}
+
+u32 get_sys_clk_index(void)
+ __attribute__ ((weak, alias("__get_sys_clk_index")));
+
+u32 get_sys_clk_freq(void)
+{
+ u8 index = get_sys_clk_index();
+ return sys_clk_array[index];
+}
+
+static inline void do_bypass_dpll(u32 *const base)
+{
+ struct dpll_regs *dpll_regs = (struct dpll_regs *)base;
+
+ clrsetbits_le32(&dpll_regs->cm_clkmode_dpll,
+ CM_CLKMODE_DPLL_DPLL_EN_MASK,
+ DPLL_EN_FAST_RELOCK_BYPASS <<
+ CM_CLKMODE_DPLL_EN_SHIFT);
+}
+
+static inline void wait_for_bypass(u32 *const base)
+{
+ struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
+
+ if (!wait_on_value(ST_DPLL_CLK_MASK, 0, &dpll_regs->cm_idlest_dpll,
+ LDELAY)) {
+ printf("Bypassing DPLL failed %p\n", base);
+ }
+}
+
+static inline void do_lock_dpll(u32 *const base)
+{
+ struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
+
+ clrsetbits_le32(&dpll_regs->cm_clkmode_dpll,
+ CM_CLKMODE_DPLL_DPLL_EN_MASK,
+ DPLL_EN_LOCK << CM_CLKMODE_DPLL_EN_SHIFT);
+}
+
+static inline void wait_for_lock(u32 *const base)
+{
+ struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
+
+ if (!wait_on_value(ST_DPLL_CLK_MASK, ST_DPLL_CLK_MASK,
+ &dpll_regs->cm_idlest_dpll, LDELAY)) {
+ printf("DPLL locking failed for %p\n", base);
+ hang();
+ }
+}
+
+static void do_setup_dpll(u32 *const base, const struct dpll_params *params,
+ u8 lock)
+{
+ u32 temp;
+ struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
+
+ bypass_dpll(base);
+
+ /* Set M & N */
+ temp = readl(&dpll_regs->cm_clksel_dpll);
+
+ temp &= ~CM_CLKSEL_DPLL_M_MASK;
+ temp |= (params->m << CM_CLKSEL_DPLL_M_SHIFT) & CM_CLKSEL_DPLL_M_MASK;
+
+ temp &= ~CM_CLKSEL_DPLL_N_MASK;
+ temp |= (params->n << CM_CLKSEL_DPLL_N_SHIFT) & CM_CLKSEL_DPLL_N_MASK;
+
+ writel(temp, &dpll_regs->cm_clksel_dpll);
+
+ /* Lock */
+ if (lock)
+ do_lock_dpll(base);
+
+ /* Setup post-dividers */
+ if (params->m2 >= 0)
+ writel(params->m2, &dpll_regs->cm_div_m2_dpll);
+ if (params->m3 >= 0)
+ writel(params->m3, &dpll_regs->cm_div_m3_dpll);
+ if (params->m4 >= 0)
+ writel(params->m4, &dpll_regs->cm_div_m4_dpll);
+ if (params->m5 >= 0)
+ writel(params->m5, &dpll_regs->cm_div_m5_dpll);
+ if (params->m6 >= 0)
+ writel(params->m6, &dpll_regs->cm_div_m6_dpll);
+ if (params->m7 >= 0)
+ writel(params->m7, &dpll_regs->cm_div_m7_dpll);
+
+ /* Wait till the DPLL locks */
+ if (lock)
+ wait_for_lock(base);
+}
+
+const struct dpll_params *get_core_dpll_params(void)
+{
+ u32 sysclk_ind = get_sys_clk_index();
+
+ switch (omap_revision()) {
+ case OMAP4430_ES1_0:
+ return &core_dpll_params_es1_1524mhz[sysclk_ind];
+ case OMAP4430_ES2_0:
+ case OMAP4430_SILICON_ID_INVALID:
+ /* safest */
+ return &core_dpll_params_es2_1600mhz_ddr200mhz[sysclk_ind];
+ default:
+ return &core_dpll_params_1600mhz[sysclk_ind];
+ }
+}
+
+u32 omap4_ddr_clk(void)
+{
+ u32 ddr_clk, sys_clk_khz;
+ const struct dpll_params *core_dpll_params;
+
+ sys_clk_khz = get_sys_clk_freq() / 1000;
+
+ core_dpll_params = get_core_dpll_params();
+
+ debug("sys_clk %d\n ", sys_clk_khz * 1000);
+
+ /* Find Core DPLL locked frequency first */
+ ddr_clk = sys_clk_khz * 2 * core_dpll_params->m /
+ (core_dpll_params->n + 1);
+ /*
+ * DDR frequency is PHY_ROOT_CLK/2
+ * PHY_ROOT_CLK = Fdpll/2/M2
+ */
+ ddr_clk = ddr_clk / 4 / core_dpll_params->m2;
+
+ ddr_clk *= 1000; /* convert to Hz */
+ debug("ddr_clk %d\n ", ddr_clk);
+
+ return ddr_clk;
+}
+
+/*
+ * Lock MPU dpll
+ *
+ * Resulting MPU frequencies:
+ * 4430 ES1.0 : 600 MHz
+ * 4430 ES2.x : 792 MHz (OPP Turbo)
+ * 4460 : 920 MHz (OPP Turbo) - DCC disabled
+ */
+void configure_mpu_dpll(void)
+{
+ const struct dpll_params *params;
+ struct dpll_regs *mpu_dpll_regs;
+ u32 omap4_rev, sysclk_ind;
+
+ omap4_rev = omap_revision();
+ sysclk_ind = get_sys_clk_index();
+
+ if (omap4_rev == OMAP4430_ES1_0)
+ params = &mpu_dpll_params_1200mhz[sysclk_ind];
+ else if (omap4_rev < OMAP4460_ES1_0)
+ params = &mpu_dpll_params_1584mhz[sysclk_ind];
+ else
+ params = &mpu_dpll_params_1840mhz[sysclk_ind];
+
+ /* DCC and clock divider settings for 4460 */
+ if (omap4_rev >= OMAP4460_ES1_0) {
+ mpu_dpll_regs =
+ (struct dpll_regs *)&prcm->cm_clkmode_dpll_mpu;
+ bypass_dpll(&prcm->cm_clkmode_dpll_mpu);
+ clrbits_le32(&prcm->cm_mpu_mpu_clkctrl,
+ MPU_CLKCTRL_CLKSEL_EMIF_DIV_MODE_MASK);
+ setbits_le32(&prcm->cm_mpu_mpu_clkctrl,
+ MPU_CLKCTRL_CLKSEL_ABE_DIV_MODE_MASK);
+ clrbits_le32(&mpu_dpll_regs->cm_clksel_dpll,
+ CM_CLKSEL_DCC_EN_MASK);
+ }
+
+ do_setup_dpll(&prcm->cm_clkmode_dpll_mpu, params, DPLL_LOCK);
+ debug("MPU DPLL locked\n");
+}
+
+static void setup_dplls(void)
+{
+ u32 sysclk_ind, temp;
+ const struct dpll_params *params;
+ debug("setup_dplls\n");
+
+ sysclk_ind = get_sys_clk_index();
+
+ /* CORE dpll */
+ params = get_core_dpll_params(); /* default - safest */
+ /*
+ * Do not lock the core DPLL now. Just set it up.
+ * Core DPLL will be locked after setting up EMIF
+ * using the FREQ_UPDATE method(freq_update_core())
+ */
+ do_setup_dpll(&prcm->cm_clkmode_dpll_core, params, DPLL_NO_LOCK);
+ /* Set the ratios for CORE_CLK, L3_CLK, L4_CLK */
+ temp = (CLKSEL_CORE_X2_DIV_1 << CLKSEL_CORE_SHIFT) |
+ (CLKSEL_L3_CORE_DIV_2 << CLKSEL_L3_SHIFT) |
+ (CLKSEL_L4_L3_DIV_2 << CLKSEL_L4_SHIFT);
+ writel(temp, &prcm->cm_clksel_core);
+ debug("Core DPLL configured\n");
+
+ /* lock PER dpll */
+ do_setup_dpll(&prcm->cm_clkmode_dpll_per,
+ &per_dpll_params_1536mhz[sysclk_ind], DPLL_LOCK);
+ debug("PER DPLL locked\n");
+
+ /* MPU dpll */
+ configure_mpu_dpll();
+}
+
+static void setup_non_essential_dplls(void)
+{
+ u32 sys_clk_khz, abe_ref_clk;
+ u32 sysclk_ind, sd_div, num, den;
+ const struct dpll_params *params;
+
+ sysclk_ind = get_sys_clk_index();
+ sys_clk_khz = get_sys_clk_freq() / 1000;
+
+ /* IVA */
+ clrsetbits_le32(&prcm->cm_bypclk_dpll_iva,
+ CM_BYPCLK_DPLL_IVA_CLKSEL_MASK, DPLL_IVA_CLKSEL_CORE_X2_DIV_2);
+
+ do_setup_dpll(&prcm->cm_clkmode_dpll_iva,
+ &iva_dpll_params_1862mhz[sysclk_ind], DPLL_LOCK);
+
+ /*
+ * USB:
+ * USB dpll is J-type. Need to set DPLL_SD_DIV for jitter correction
+ * DPLL_SD_DIV = CEILING ([DPLL_MULT/(DPLL_DIV+1)]* CLKINP / 250)
+ * - where CLKINP is sys_clk in MHz
+ * Use CLKINP in KHz and adjust the denominator accordingly so
+ * that we have enough accuracy and at the same time no overflow
+ */
+ params = &usb_dpll_params_1920mhz[sysclk_ind];
+ num = params->m * sys_clk_khz;
+ den = (params->n + 1) * 250 * 1000;
+ num += den - 1;
+ sd_div = num / den;
+ clrsetbits_le32(&prcm->cm_clksel_dpll_usb,
+ CM_CLKSEL_DPLL_DPLL_SD_DIV_MASK,
+ sd_div << CM_CLKSEL_DPLL_DPLL_SD_DIV_SHIFT);
+
+ /* Now setup the dpll with the regular function */
+ do_setup_dpll(&prcm->cm_clkmode_dpll_usb, params, DPLL_LOCK);
+
+#ifdef CONFIG_SYS_OMAP4_ABE_SYSCK
+ params = &abe_dpll_params_sysclk_196608khz[sysclk_ind];
+ abe_ref_clk = CM_ABE_PLL_REF_CLKSEL_CLKSEL_SYSCLK;
+#else
+ params = &abe_dpll_params_32k_196608khz;
+ abe_ref_clk = CM_ABE_PLL_REF_CLKSEL_CLKSEL_32KCLK;
+ /*
+ * We need to enable some additional options to achieve
+ * 196.608MHz from 32768 Hz
+ */
+ setbits_le32(&prcm->cm_clkmode_dpll_abe,
+ CM_CLKMODE_DPLL_DRIFTGUARD_EN_MASK|
+ CM_CLKMODE_DPLL_RELOCK_RAMP_EN_MASK|
+ CM_CLKMODE_DPLL_LPMODE_EN_MASK|
+ CM_CLKMODE_DPLL_REGM4XEN_MASK);
+ /* Spend 4 REFCLK cycles at each stage */
+ clrsetbits_le32(&prcm->cm_clkmode_dpll_abe,
+ CM_CLKMODE_DPLL_RAMP_RATE_MASK,
+ 1 << CM_CLKMODE_DPLL_RAMP_RATE_SHIFT);
+#endif
+
+ /* Select the right reference clk */
+ clrsetbits_le32(&prcm->cm_abe_pll_ref_clksel,
+ CM_ABE_PLL_REF_CLKSEL_CLKSEL_MASK,
+ abe_ref_clk << CM_ABE_PLL_REF_CLKSEL_CLKSEL_SHIFT);
+ /* Lock the dpll */
+ do_setup_dpll(&prcm->cm_clkmode_dpll_abe, params, DPLL_LOCK);
+}
+
+static void do_scale_tps62361(u32 reg, u32 volt_mv)
+{
+ u32 temp, step;
+
+ step = volt_mv - TPS62361_BASE_VOLT_MV;
+ step /= 10;
+
+ /*
+ * Select SET1 in TPS62361:
+ * VSEL1 is grounded on board. So the following selects
+ * VSEL1 = 0 and VSEL0 = 1
+ */
+ gpio_direction_output(TPS62361_VSEL0_GPIO, 0);
+ gpio_set_value(TPS62361_VSEL0_GPIO, 1);
+
+ temp = TPS62361_I2C_SLAVE_ADDR |
+ (reg << PRM_VC_VAL_BYPASS_REGADDR_SHIFT) |
+ (step << PRM_VC_VAL_BYPASS_DATA_SHIFT) |
+ PRM_VC_VAL_BYPASS_VALID_BIT;
+ debug("do_scale_tps62361: volt - %d step - 0x%x\n", volt_mv, step);
+
+ writel(temp, &prcm->prm_vc_val_bypass);
+ if (!wait_on_value(PRM_VC_VAL_BYPASS_VALID_BIT, 0,
+ &prcm->prm_vc_val_bypass, LDELAY)) {
+ puts("Scaling voltage failed for vdd_mpu from TPS\n");
+ }
+}
+
+static void do_scale_vcore(u32 vcore_reg, u32 volt_mv)
+{
+ u32 temp, offset_code;
+ u32 step = 12660; /* 12.66 mV represented in uV */
+ u32 offset = volt_mv;
+
+ /* convert to uV for better accuracy in the calculations */
+ offset *= 1000;
+
+ if (omap_revision() == OMAP4430_ES1_0)
+ offset -= PHOENIX_SMPS_BASE_VOLT_STD_MODE_UV;
+ else
+ offset -= PHOENIX_SMPS_BASE_VOLT_STD_MODE_WITH_OFFSET_UV;
+
+ offset_code = (offset + step - 1) / step;
+ /* The code starts at 1 not 0 */
+ offset_code++;
+
+ debug("do_scale_vcore: volt - %d offset_code - 0x%x\n", volt_mv,
+ offset_code);
+
+ temp = SMPS_I2C_SLAVE_ADDR |
+ (vcore_reg << PRM_VC_VAL_BYPASS_REGADDR_SHIFT) |
+ (offset_code << PRM_VC_VAL_BYPASS_DATA_SHIFT) |
+ PRM_VC_VAL_BYPASS_VALID_BIT;
+ writel(temp, &prcm->prm_vc_val_bypass);
+ if (!wait_on_value(PRM_VC_VAL_BYPASS_VALID_BIT, 0,
+ &prcm->prm_vc_val_bypass, LDELAY)) {
+ printf("Scaling voltage failed for 0x%x\n", vcore_reg);
+ }
+}
+
+/*
+ * Setup the voltages for vdd_mpu, vdd_core, and vdd_iva
+ * We set the maximum voltages allowed here because Smart-Reflex is not
+ * enabled in bootloader. Voltage initialization in the kernel will set
+ * these to the nominal values after enabling Smart-Reflex
+ */
+static void scale_vcores(void)
+{
+ u32 volt, sys_clk_khz, cycles_hi, cycles_low, temp, omap4_rev;
+
+ sys_clk_khz = get_sys_clk_freq() / 1000;
+
+ /*
+ * Setup the dedicated I2C controller for Voltage Control
+ * I2C clk - high period 40% low period 60%
+ */
+ cycles_hi = sys_clk_khz * 4 / PRM_VC_I2C_CHANNEL_FREQ_KHZ / 10;
+ cycles_low = sys_clk_khz * 6 / PRM_VC_I2C_CHANNEL_FREQ_KHZ / 10;
+ /* values to be set in register - less by 5 & 7 respectively */
+ cycles_hi -= 5;
+ cycles_low -= 7;
+ temp = (cycles_hi << PRM_VC_CFG_I2C_CLK_SCLH_SHIFT) |
+ (cycles_low << PRM_VC_CFG_I2C_CLK_SCLL_SHIFT);
+ writel(temp, &prcm->prm_vc_cfg_i2c_clk);
+
+ /* Disable high speed mode and all advanced features */
+ writel(0x0, &prcm->prm_vc_cfg_i2c_mode);
+
+ omap4_rev = omap_revision();
+ /* TPS - supplies vdd_mpu on 4460 */
+ if (omap4_rev >= OMAP4460_ES1_0) {
+ volt = 1430;
+ do_scale_tps62361(TPS62361_REG_ADDR_SET1, volt);
+ }
+
+ /*
+ * VCORE 1
+ *
+ * 4430 : supplies vdd_mpu
+ * Setting a high voltage for Nitro mode as smart reflex is not enabled.
+ * We use the maximum possible value in the AVS range because the next
+ * higher voltage in the discrete range (code >= 0b111010) is way too
+ * high
+ *
+ * 4460 : supplies vdd_core
+ */
+ if (omap4_rev < OMAP4460_ES1_0) {
+ volt = 1417;
+ do_scale_vcore(SMPS_REG_ADDR_VCORE1, volt);
+ } else {
+ volt = 1200;
+ do_scale_vcore(SMPS_REG_ADDR_VCORE1, volt);
+ }
+
+ /* VCORE 2 - supplies vdd_iva */
+ volt = 1200;
+ do_scale_vcore(SMPS_REG_ADDR_VCORE2, volt);
+
+ /*
+ * VCORE 3
+ * 4430 : supplies vdd_core
+ * 4460 : not connected
+ */
+ if (omap4_rev < OMAP4460_ES1_0) {
+ volt = 1200;
+ do_scale_vcore(SMPS_REG_ADDR_VCORE3, volt);
+ }
+}
+
+static inline void enable_clock_domain(u32 *const clkctrl_reg, u32 enable_mode)
+{
+ clrsetbits_le32(clkctrl_reg, CD_CLKCTRL_CLKTRCTRL_MASK,
+ enable_mode << CD_CLKCTRL_CLKTRCTRL_SHIFT);
+ debug("Enable clock domain - %p\n", clkctrl_reg);
+}
+
+static inline void wait_for_clk_enable(u32 *clkctrl_addr)
+{
+ u32 clkctrl, idlest = MODULE_CLKCTRL_IDLEST_DISABLED;
+ u32 bound = LDELAY;
+
+ while ((idlest == MODULE_CLKCTRL_IDLEST_DISABLED) ||
+ (idlest == MODULE_CLKCTRL_IDLEST_TRANSITIONING)) {
+
+ clkctrl = readl(clkctrl_addr);
+ idlest = (clkctrl & MODULE_CLKCTRL_IDLEST_MASK) >>
+ MODULE_CLKCTRL_IDLEST_SHIFT;
+ if (--bound == 0) {
+ printf("Clock enable failed for 0x%p idlest 0x%x\n",
+ clkctrl_addr, clkctrl);
+ return;
+ }
+ }
+}
+
+static inline void enable_clock_module(u32 *const clkctrl_addr, u32 enable_mode,
+ u32 wait_for_enable)
+{
+ clrsetbits_le32(clkctrl_addr, MODULE_CLKCTRL_MODULEMODE_MASK,
+ enable_mode << MODULE_CLKCTRL_MODULEMODE_SHIFT);
+ debug("Enable clock module - %p\n", clkctrl_addr);
+ if (wait_for_enable)
+ wait_for_clk_enable(clkctrl_addr);
+}
+
+/*
+ * Enable essential clock domains, modules and
+ * do some additional special settings needed
+ */
+static void enable_basic_clocks(void)
+{
+ u32 i, max = 100, wait_for_enable = 1;
+ u32 *const clk_domains_essential[] = {
+ &prcm->cm_l4per_clkstctrl,
+ &prcm->cm_l3init_clkstctrl,
+ &prcm->cm_memif_clkstctrl,
+ &prcm->cm_l4cfg_clkstctrl,
+ 0
+ };
+
+ u32 *const clk_modules_hw_auto_essential[] = {
+ &prcm->cm_wkup_gpio1_clkctrl,
+ &prcm->cm_l4per_gpio2_clkctrl,
+ &prcm->cm_l4per_gpio3_clkctrl,
+ &prcm->cm_l4per_gpio4_clkctrl,
+ &prcm->cm_l4per_gpio5_clkctrl,
+ &prcm->cm_l4per_gpio6_clkctrl,
+ &prcm->cm_memif_emif_1_clkctrl,
+ &prcm->cm_memif_emif_2_clkctrl,
+ &prcm->cm_l3init_hsusbotg_clkctrl,
+ &prcm->cm_l3init_usbphy_clkctrl,
+ &prcm->cm_l4cfg_l4_cfg_clkctrl,
+ 0
+ };
+
+ u32 *const clk_modules_explicit_en_essential[] = {
+ &prcm->cm_l4per_gptimer2_clkctrl,
+ &prcm->cm_l3init_hsmmc1_clkctrl,
+ &prcm->cm_l3init_hsmmc2_clkctrl,
+ &prcm->cm_l4per_mcspi1_clkctrl,
+ &prcm->cm_wkup_gptimer1_clkctrl,
+ &prcm->cm_l4per_i2c1_clkctrl,
+ &prcm->cm_l4per_i2c2_clkctrl,
+ &prcm->cm_l4per_i2c3_clkctrl,
+ &prcm->cm_l4per_i2c4_clkctrl,
+ &prcm->cm_wkup_wdtimer2_clkctrl,
+ &prcm->cm_l4per_uart3_clkctrl,
+ 0
+ };
+
+ /* Enable optional additional functional clock for GPIO4 */
+ setbits_le32(&prcm->cm_l4per_gpio4_clkctrl,
+ GPIO4_CLKCTRL_OPTFCLKEN_MASK);
+
+ /* Enable 96 MHz clock for MMC1 & MMC2 */
+ setbits_le32(&prcm->cm_l3init_hsmmc1_clkctrl,
+ HSMMC_CLKCTRL_CLKSEL_MASK);
+ setbits_le32(&prcm->cm_l3init_hsmmc2_clkctrl,
+ HSMMC_CLKCTRL_CLKSEL_MASK);
+
+ /* Select 32KHz clock as the source of GPTIMER1 */
+ setbits_le32(&prcm->cm_wkup_gptimer1_clkctrl,
+ GPTIMER1_CLKCTRL_CLKSEL_MASK);
+
+ /* Enable optional 48M functional clock for USB PHY */
+ setbits_le32(&prcm->cm_l3init_usbphy_clkctrl,
+ USBPHY_CLKCTRL_OPTFCLKEN_PHY_48M_MASK);
+
+ /* Put the clock domains in SW_WKUP mode */
+ for (i = 0; (i < max) && clk_domains_essential[i]; i++) {
+ enable_clock_domain(clk_domains_essential[i],
+ CD_CLKCTRL_CLKTRCTRL_SW_WKUP);
+ }
+
+ /* Clock modules that need to be put in HW_AUTO */
+ for (i = 0; (i < max) && clk_modules_hw_auto_essential[i]; i++) {
+ enable_clock_module(clk_modules_hw_auto_essential[i],
+ MODULE_CLKCTRL_MODULEMODE_HW_AUTO,
+ wait_for_enable);
+ };
+
+ /* Clock modules that need to be put in SW_EXPLICIT_EN mode */
+ for (i = 0; (i < max) && clk_modules_explicit_en_essential[i]; i++) {
+ enable_clock_module(clk_modules_explicit_en_essential[i],
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN,
+ wait_for_enable);
+ };
+
+ /* Put the clock domains in HW_AUTO mode now */
+ for (i = 0; (i < max) && clk_domains_essential[i]; i++) {
+ enable_clock_domain(clk_domains_essential[i],
+ CD_CLKCTRL_CLKTRCTRL_HW_AUTO);
+ }
+}
+
+/*
+ * Enable non-essential clock domains, modules and
+ * do some additional special settings needed
+ */
+static void enable_non_essential_clocks(void)
+{
+ u32 i, max = 100, wait_for_enable = 0;
+ u32 *const clk_domains_non_essential[] = {
+ &prcm->cm_mpu_m3_clkstctrl,
+ &prcm->cm_ivahd_clkstctrl,
+ &prcm->cm_dsp_clkstctrl,
+ &prcm->cm_dss_clkstctrl,
+ &prcm->cm_sgx_clkstctrl,
+ &prcm->cm1_abe_clkstctrl,
+ &prcm->cm_c2c_clkstctrl,
+ &prcm->cm_cam_clkstctrl,
+ &prcm->cm_dss_clkstctrl,
+ &prcm->cm_sdma_clkstctrl,
+ 0
+ };
+
+ u32 *const clk_modules_hw_auto_non_essential[] = {
+ &prcm->cm_mpu_m3_mpu_m3_clkctrl,
+ &prcm->cm_ivahd_ivahd_clkctrl,
+ &prcm->cm_ivahd_sl2_clkctrl,
+ &prcm->cm_dsp_dsp_clkctrl,
+ &prcm->cm_l3_2_gpmc_clkctrl,
+ &prcm->cm_l3instr_l3_3_clkctrl,
+ &prcm->cm_l3instr_l3_instr_clkctrl,
+ &prcm->cm_l3instr_intrconn_wp1_clkctrl,
+ &prcm->cm_l3init_hsi_clkctrl,
+ &prcm->cm_l3init_hsusbtll_clkctrl,
+ 0
+ };
+
+ u32 *const clk_modules_explicit_en_non_essential[] = {
+ &prcm->cm1_abe_aess_clkctrl,
+ &prcm->cm1_abe_pdm_clkctrl,
+ &prcm->cm1_abe_dmic_clkctrl,
+ &prcm->cm1_abe_mcasp_clkctrl,
+ &prcm->cm1_abe_mcbsp1_clkctrl,
+ &prcm->cm1_abe_mcbsp2_clkctrl,
+ &prcm->cm1_abe_mcbsp3_clkctrl,
+ &prcm->cm1_abe_slimbus_clkctrl,
+ &prcm->cm1_abe_timer5_clkctrl,
+ &prcm->cm1_abe_timer6_clkctrl,
+ &prcm->cm1_abe_timer7_clkctrl,
+ &prcm->cm1_abe_timer8_clkctrl,
+ &prcm->cm1_abe_wdt3_clkctrl,
+ &prcm->cm_l4per_gptimer9_clkctrl,
+ &prcm->cm_l4per_gptimer10_clkctrl,
+ &prcm->cm_l4per_gptimer11_clkctrl,
+ &prcm->cm_l4per_gptimer3_clkctrl,
+ &prcm->cm_l4per_gptimer4_clkctrl,
+ &prcm->cm_l4per_hdq1w_clkctrl,
+ &prcm->cm_l4per_mcbsp4_clkctrl,
+ &prcm->cm_l4per_mcspi2_clkctrl,
+ &prcm->cm_l4per_mcspi3_clkctrl,
+ &prcm->cm_l4per_mcspi4_clkctrl,
+ &prcm->cm_l4per_mmcsd3_clkctrl,
+ &prcm->cm_l4per_mmcsd4_clkctrl,
+ &prcm->cm_l4per_mmcsd5_clkctrl,
+ &prcm->cm_l4per_uart1_clkctrl,
+ &prcm->cm_l4per_uart2_clkctrl,
+ &prcm->cm_l4per_uart4_clkctrl,
+ &prcm->cm_wkup_keyboard_clkctrl,
+ &prcm->cm_wkup_wdtimer2_clkctrl,
+ &prcm->cm_cam_iss_clkctrl,
+ &prcm->cm_cam_fdif_clkctrl,
+ &prcm->cm_dss_dss_clkctrl,
+ &prcm->cm_sgx_sgx_clkctrl,
+ &prcm->cm_l3init_hsusbhost_clkctrl,
+ &prcm->cm_l3init_fsusb_clkctrl,
+ 0
+ };
+
+ /* Enable optional functional clock for ISS */
+ setbits_le32(&prcm->cm_cam_iss_clkctrl, ISS_CLKCTRL_OPTFCLKEN_MASK);
+
+ /* Enable all optional functional clocks of DSS */
+ setbits_le32(&prcm->cm_dss_dss_clkctrl, DSS_CLKCTRL_OPTFCLKEN_MASK);
+
+
+ /* Put the clock domains in SW_WKUP mode */
+ for (i = 0; (i < max) && clk_domains_non_essential[i]; i++) {
+ enable_clock_domain(clk_domains_non_essential[i],
+ CD_CLKCTRL_CLKTRCTRL_SW_WKUP);
+ }
+
+ /* Clock modules that need to be put in HW_AUTO */
+ for (i = 0; (i < max) && clk_modules_hw_auto_non_essential[i]; i++) {
+ enable_clock_module(clk_modules_hw_auto_non_essential[i],
+ MODULE_CLKCTRL_MODULEMODE_HW_AUTO,
+ wait_for_enable);
+ };
+
+ /* Clock modules that need to be put in SW_EXPLICIT_EN mode */
+ for (i = 0; (i < max) && clk_modules_explicit_en_non_essential[i];
+ i++) {
+ enable_clock_module(clk_modules_explicit_en_non_essential[i],
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN,
+ wait_for_enable);
+ };
+
+ /* Put the clock domains in HW_AUTO mode now */
+ for (i = 0; (i < max) && clk_domains_non_essential[i]; i++) {
+ enable_clock_domain(clk_domains_non_essential[i],
+ CD_CLKCTRL_CLKTRCTRL_HW_AUTO);
+ }
+
+ /* Put camera module in no sleep mode */
+ clrsetbits_le32(&prcm->cm_cam_clkstctrl, MODULE_CLKCTRL_MODULEMODE_MASK,
+ CD_CLKCTRL_CLKTRCTRL_NO_SLEEP <<
+ MODULE_CLKCTRL_MODULEMODE_SHIFT);
+}
+
+
+void freq_update_core(void)
+{
+ u32 freq_config1 = 0;
+ const struct dpll_params *core_dpll_params;
+
+ core_dpll_params = get_core_dpll_params();
+ /* Put EMIF clock domain in sw wakeup mode */
+ enable_clock_domain(&prcm->cm_memif_clkstctrl,
+ CD_CLKCTRL_CLKTRCTRL_SW_WKUP);
+ wait_for_clk_enable(&prcm->cm_memif_emif_1_clkctrl);
+ wait_for_clk_enable(&prcm->cm_memif_emif_2_clkctrl);
+
+ freq_config1 = SHADOW_FREQ_CONFIG1_FREQ_UPDATE_MASK |
+ SHADOW_FREQ_CONFIG1_DLL_RESET_MASK;
+
+ freq_config1 |= (DPLL_EN_LOCK << SHADOW_FREQ_CONFIG1_DPLL_EN_SHIFT) &
+ SHADOW_FREQ_CONFIG1_DPLL_EN_MASK;
+
+ freq_config1 |= (core_dpll_params->m2 <<
+ SHADOW_FREQ_CONFIG1_M2_DIV_SHIFT) &
+ SHADOW_FREQ_CONFIG1_M2_DIV_MASK;
+
+ writel(freq_config1, &prcm->cm_shadow_freq_config1);
+ if (!wait_on_value(SHADOW_FREQ_CONFIG1_FREQ_UPDATE_MASK, 0,
+ &prcm->cm_shadow_freq_config1, LDELAY)) {
+ puts("FREQ UPDATE procedure failed!!");
+ hang();
+ }
+
+ /* Put EMIF clock domain back in hw auto mode */
+ enable_clock_domain(&prcm->cm_memif_clkstctrl,
+ CD_CLKCTRL_CLKTRCTRL_HW_AUTO);
+ wait_for_clk_enable(&prcm->cm_memif_emif_1_clkctrl);
+ wait_for_clk_enable(&prcm->cm_memif_emif_2_clkctrl);
+}
+
+void bypass_dpll(u32 *const base)
+{
+ do_bypass_dpll(base);
+ wait_for_bypass(base);
+}
+
+void lock_dpll(u32 *const base)
+{
+ do_lock_dpll(base);
+ wait_for_lock(base);
+}
+
+void setup_clocks_for_console(void)
+{
+ /* Do not add any spl_debug prints in this function */
+ clrsetbits_le32(&prcm->cm_l4per_clkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK,
+ CD_CLKCTRL_CLKTRCTRL_SW_WKUP <<
+ CD_CLKCTRL_CLKTRCTRL_SHIFT);
+
+ /* Enable all UARTs - console will be on one of them */
+ clrsetbits_le32(&prcm->cm_l4per_uart1_clkctrl,
+ MODULE_CLKCTRL_MODULEMODE_MASK,
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
+ MODULE_CLKCTRL_MODULEMODE_SHIFT);
+
+ clrsetbits_le32(&prcm->cm_l4per_uart2_clkctrl,
+ MODULE_CLKCTRL_MODULEMODE_MASK,
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
+ MODULE_CLKCTRL_MODULEMODE_SHIFT);
+
+ clrsetbits_le32(&prcm->cm_l4per_uart3_clkctrl,
+ MODULE_CLKCTRL_MODULEMODE_MASK,
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
+ MODULE_CLKCTRL_MODULEMODE_SHIFT);
+
+ clrsetbits_le32(&prcm->cm_l4per_uart3_clkctrl,
+ MODULE_CLKCTRL_MODULEMODE_MASK,
+ MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN <<
+ MODULE_CLKCTRL_MODULEMODE_SHIFT);
+
+ clrsetbits_le32(&prcm->cm_l4per_clkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK,
+ CD_CLKCTRL_CLKTRCTRL_HW_AUTO <<
+ CD_CLKCTRL_CLKTRCTRL_SHIFT);
+}
+
+void prcm_init(void)
+{
+ switch (omap4_hw_init_context()) {
+ case OMAP_INIT_CONTEXT_SPL:
+ case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR:
+ case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH:
+ enable_basic_clocks();
+ scale_vcores();
+ setup_dplls();
+ setup_non_essential_dplls();
+ enable_non_essential_clocks();
+ break;
+ default:
+ break;
+ }
+}
diff --git a/arch/arm/cpu/armv7/omap-common/emif-common.c b/arch/arm/cpu/armv7/omap-common/emif-common.c
new file mode 100644
index 0000000..94c8bed
--- /dev/null
+++ b/arch/arm/cpu/armv7/omap-common/emif-common.c
@@ -0,0 +1,1254 @@
+/*
+ * EMIF programming
+ *
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Aneesh V <aneesh@ti.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/arch/emif.h>
+#include <asm/arch/clocks.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/omap_common.h>
+#include <asm/utils.h>
+
+static inline u32 emif_num(u32 base)
+{
+ if (base == OMAP44XX_EMIF1)
+ return 1;
+ else if (base == OMAP44XX_EMIF2)
+ return 2;
+ else
+ return 0;
+}
+
+static inline u32 get_mr(u32 base, u32 cs, u32 mr_addr)
+{
+ u32 mr;
+ struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
+
+ mr_addr |= cs << OMAP44XX_REG_CS_SHIFT;
+ writel(mr_addr, &emif->emif_lpddr2_mode_reg_cfg);
+ if (omap_revision() == OMAP4430_ES2_0)
+ mr = readl(&emif->emif_lpddr2_mode_reg_data_es2);
+ else
+ mr = readl(&emif->emif_lpddr2_mode_reg_data);
+ debug("get_mr: EMIF%d cs %d mr %08x val 0x%x\n", emif_num(base),
+ cs, mr_addr, mr);
+ return mr;
+}
+
+static inline void set_mr(u32 base, u32 cs, u32 mr_addr, u32 mr_val)
+{
+ struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
+
+ mr_addr |= cs << OMAP44XX_REG_CS_SHIFT;
+ writel(mr_addr, &emif->emif_lpddr2_mode_reg_cfg);
+ writel(mr_val, &emif->emif_lpddr2_mode_reg_data);
+}
+
+void emif_reset_phy(u32 base)
+{
+ struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
+ u32 iodft;
+
+ iodft = readl(&emif->emif_iodft_tlgc);
+ iodft |= OMAP44XX_REG_RESET_PHY_MASK;
+ writel(iodft, &emif->emif_iodft_tlgc);
+}
+
+static void do_lpddr2_init(u32 base, u32 cs)
+{
+ u32 mr_addr;
+
+ /* Wait till device auto initialization is complete */
+ while (get_mr(base, cs, LPDDR2_MR0) & LPDDR2_MR0_DAI_MASK)
+ ;
+ set_mr(base, cs, LPDDR2_MR10, MR10_ZQ_ZQINIT);
+ /*
+ * tZQINIT = 1 us
+ * Enough loops assuming a maximum of 2GHz
+ */
+ sdelay(2000);
+ set_mr(base, cs, LPDDR2_MR1, MR1_BL_8_BT_SEQ_WRAP_EN_NWR_3);
+ set_mr(base, cs, LPDDR2_MR16, MR16_REF_FULL_ARRAY);
+ /*
+ * Enable refresh along with writing MR2
+ * Encoding of RL in MR2 is (RL - 2)
+ */
+ mr_addr = LPDDR2_MR2 | OMAP44XX_REG_REFRESH_EN_MASK;
+ set_mr(base, cs, mr_addr, RL_FINAL - 2);
+}
+
+static void lpddr2_init(u32 base, const struct emif_regs *regs)
+{
+ struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
+
+ /* Not NVM */
+ clrbits_le32(&emif->emif_lpddr2_nvm_config, OMAP44XX_REG_CS1NVMEN_MASK);
+
+ /*
+ * Keep REG_INITREF_DIS = 1 to prevent re-initialization of SDRAM
+ * when EMIF_SDRAM_CONFIG register is written
+ */
+ setbits_le32(&emif->emif_sdram_ref_ctrl, OMAP44XX_REG_INITREF_DIS_MASK);
+
+ /*
+ * Set the SDRAM_CONFIG and PHY_CTRL for the
+ * un-locked frequency & default RL
+ */
+ writel(regs->sdram_config_init, &emif->emif_sdram_config);
+ writel(regs->emif_ddr_phy_ctlr_1_init, &emif->emif_ddr_phy_ctrl_1);
+
+ do_lpddr2_init(base, CS0);
+ if (regs->sdram_config & OMAP44XX_REG_EBANK_MASK)
+ do_lpddr2_init(base, CS1);
+
+ writel(regs->sdram_config, &emif->emif_sdram_config);
+ writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1);
+
+ /* Enable refresh now */
+ clrbits_le32(&emif->emif_sdram_ref_ctrl, OMAP44XX_REG_INITREF_DIS_MASK);
+
+}
+
+static void emif_update_timings(u32 base, const struct emif_regs *regs)
+{
+ struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
+
+ writel(regs->ref_ctrl, &emif->emif_sdram_ref_ctrl_shdw);
+ writel(regs->sdram_tim1, &emif->emif_sdram_tim_1_shdw);
+ writel(regs->sdram_tim2, &emif->emif_sdram_tim_2_shdw);
+ writel(regs->sdram_tim3, &emif->emif_sdram_tim_3_shdw);
+ if (omap_revision() == OMAP4430_ES1_0) {
+ /* ES1 bug EMIF should be in force idle during freq_update */
+ writel(0, &emif->emif_pwr_mgmt_ctrl);
+ } else {
+ writel(EMIF_PWR_MGMT_CTRL, &emif->emif_pwr_mgmt_ctrl);
+ writel(EMIF_PWR_MGMT_CTRL_SHDW, &emif->emif_pwr_mgmt_ctrl_shdw);
+ }
+ writel(regs->read_idle_ctrl, &emif->emif_read_idlectrl_shdw);
+ writel(regs->zq_config, &emif->emif_zq_config);
+ writel(regs->temp_alert_config, &emif->emif_temp_alert_config);
+ writel(regs->emif_ddr_phy_ctlr_1, &emif->emif_ddr_phy_ctrl_1_shdw);
+
+ if (omap_revision() >= OMAP4460_ES1_0) {
+ writel(EMIF_L3_CONFIG_VAL_SYS_10_MPU_3_LL_0,
+ &emif->emif_l3_config);
+ } else {
+ writel(EMIF_L3_CONFIG_VAL_SYS_10_LL_0,
+ &emif->emif_l3_config);
+ }
+}
+
+#ifndef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
+#define print_timing_reg(reg) debug(#reg" - 0x%08x\n", (reg))
+
+static u32 *const T_num = (u32 *)OMAP4_SRAM_SCRATCH_EMIF_T_NUM;
+static u32 *const T_den = (u32 *)OMAP4_SRAM_SCRATCH_EMIF_T_DEN;
+static u32 *const emif_sizes = (u32 *)OMAP4_SRAM_SCRATCH_EMIF_SIZE;
+
+/*
+ * Organization and refresh requirements for LPDDR2 devices of different
+ * types and densities. Derived from JESD209-2 section 2.4
+ */
+const struct lpddr2_addressing addressing_table[] = {
+ /* Banks tREFIx10 rowx32,rowx16 colx32,colx16 density */
+ {BANKS4, T_REFI_15_6, {ROW_12, ROW_12}, {COL_7, COL_8} },/*64M */
+ {BANKS4, T_REFI_15_6, {ROW_12, ROW_12}, {COL_8, COL_9} },/*128M */
+ {BANKS4, T_REFI_7_8, {ROW_13, ROW_13}, {COL_8, COL_9} },/*256M */
+ {BANKS4, T_REFI_7_8, {ROW_13, ROW_13}, {COL_9, COL_10} },/*512M */
+ {BANKS8, T_REFI_7_8, {ROW_13, ROW_13}, {COL_9, COL_10} },/*1GS4 */
+ {BANKS8, T_REFI_3_9, {ROW_14, ROW_14}, {COL_9, COL_10} },/*2GS4 */
+ {BANKS8, T_REFI_3_9, {ROW_14, ROW_14}, {COL_10, COL_11} },/*4G */
+ {BANKS8, T_REFI_3_9, {ROW_15, ROW_15}, {COL_10, COL_11} },/*8G */
+ {BANKS4, T_REFI_7_8, {ROW_14, ROW_14}, {COL_9, COL_10} },/*1GS2 */
+ {BANKS4, T_REFI_3_9, {ROW_15, ROW_15}, {COL_9, COL_10} },/*2GS2 */
+};
+
+static const u32 lpddr2_density_2_size_in_mbytes[] = {
+ 8, /* 64Mb */
+ 16, /* 128Mb */
+ 32, /* 256Mb */
+ 64, /* 512Mb */
+ 128, /* 1Gb */
+ 256, /* 2Gb */
+ 512, /* 4Gb */
+ 1024, /* 8Gb */
+ 2048, /* 16Gb */
+ 4096 /* 32Gb */
+};
+
+/*
+ * Calculate the period of DDR clock from frequency value and set the
+ * denominator and numerator in global variables for easy access later
+ */
+static void set_ddr_clk_period(u32 freq)
+{
+ /*
+ * period = 1/freq
+ * period_in_ns = 10^9/freq
+ */
+ *T_num = 1000000000;
+ *T_den = freq;
+ cancel_out(T_num, T_den, 200);
+
+}
+
+/*
+ * Convert time in nano seconds to number of cycles of DDR clock
+ */
+static inline u32 ns_2_cycles(u32 ns)
+{
+ return ((ns * (*T_den)) + (*T_num) - 1) / (*T_num);
+}
+
+/*
+ * ns_2_cycles with the difference that the time passed is 2 times the actual
+ * value(to avoid fractions). The cycles returned is for the original value of
+ * the timing parameter
+ */
+static inline u32 ns_x2_2_cycles(u32 ns)
+{
+ return ((ns * (*T_den)) + (*T_num) * 2 - 1) / ((*T_num) * 2);
+}
+
+/*
+ * Find addressing table index based on the device's type(S2 or S4) and
+ * density
+ */
+s8 addressing_table_index(u8 type, u8 density, u8 width)
+{
+ u8 index;
+ if ((density > LPDDR2_DENSITY_8Gb) || (width == LPDDR2_IO_WIDTH_8))
+ return -1;
+
+ /*
+ * Look at the way ADDR_TABLE_INDEX* values have been defined
+ * in emif.h compared to LPDDR2_DENSITY_* values
+ * The table is layed out in the increasing order of density
+ * (ignoring type). The exceptions 1GS2 and 2GS2 have been placed
+ * at the end
+ */
+ if ((type == LPDDR2_TYPE_S2) && (density == LPDDR2_DENSITY_1Gb))
+ index = ADDR_TABLE_INDEX1GS2;
+ else if ((type == LPDDR2_TYPE_S2) && (density == LPDDR2_DENSITY_2Gb))
+ index = ADDR_TABLE_INDEX2GS2;
+ else
+ index = density;
+
+ debug("emif: addressing table index %d\n", index);
+
+ return index;
+}
+
+/*
+ * Find the the right timing table from the array of timing
+ * tables of the device using DDR clock frequency
+ */
+static const struct lpddr2_ac_timings *get_timings_table(const struct
+ lpddr2_ac_timings const *const *device_timings,
+ u32 freq)
+{
+ u32 i, temp, freq_nearest;
+ const struct lpddr2_ac_timings *timings = 0;
+
+ emif_assert(freq <= MAX_LPDDR2_FREQ);
+ emif_assert(device_timings);
+
+ /*
+ * Start with the maximum allowed frequency - that is always safe
+ */
+ freq_nearest = MAX_LPDDR2_FREQ;
+ /*
+ * Find the timings table that has the max frequency value:
+ * i. Above or equal to the DDR frequency - safe
+ * ii. The lowest that satisfies condition (i) - optimal
+ */
+ for (i = 0; (i < MAX_NUM_SPEEDBINS) && device_timings[i]; i++) {
+ temp = device_timings[i]->max_freq;
+ if ((temp >= freq) && (temp <= freq_nearest)) {
+ freq_nearest = temp;
+ timings = device_timings[i];
+ }
+ }
+ debug("emif: timings table: %d\n", freq_nearest);
+ return timings;
+}
+
+/*
+ * Finds the value of emif_sdram_config_reg
+ * All parameters are programmed based on the device on CS0.
+ * If there is a device on CS1, it will be same as that on CS0 or
+ * it will be NVM. We don't support NVM yet.
+ * If cs1_device pointer is NULL it is assumed that there is no device
+ * on CS1
+ */
+static u32 get_sdram_config_reg(const struct lpddr2_device_details *cs0_device,
+ const struct lpddr2_device_details *cs1_device,
+ const struct lpddr2_addressing *addressing,
+ u8 RL)
+{
+ u32 config_reg = 0;
+
+ config_reg |= (cs0_device->type + 4) << OMAP44XX_REG_SDRAM_TYPE_SHIFT;
+ config_reg |= EMIF_INTERLEAVING_POLICY_MAX_INTERLEAVING <<
+ OMAP44XX_REG_IBANK_POS_SHIFT;
+
+ config_reg |= cs0_device->io_width << OMAP44XX_REG_NARROW_MODE_SHIFT;
+
+ config_reg |= RL << OMAP44XX_REG_CL_SHIFT;
+
+ config_reg |= addressing->row_sz[cs0_device->io_width] <<
+ OMAP44XX_REG_ROWSIZE_SHIFT;
+
+ config_reg |= addressing->num_banks << OMAP44XX_REG_IBANK_SHIFT;
+
+ config_reg |= (cs1_device ? EBANK_CS1_EN : EBANK_CS1_DIS) <<
+ OMAP44XX_REG_EBANK_SHIFT;
+
+ config_reg |= addressing->col_sz[cs0_device->io_width] <<
+ OMAP44XX_REG_PAGESIZE_SHIFT;
+
+ return config_reg;
+}
+
+static u32 get_sdram_ref_ctrl(u32 freq,
+ const struct lpddr2_addressing *addressing)
+{
+ u32 ref_ctrl = 0, val = 0, freq_khz;
+ freq_khz = freq / 1000;
+ /*
+ * refresh rate to be set is 'tREFI * freq in MHz
+ * division by 10000 to account for khz and x10 in t_REFI_us_x10
+ */
+ val = addressing->t_REFI_us_x10 * freq_khz / 10000;
+ ref_ctrl |= val << OMAP44XX_REG_REFRESH_RATE_SHIFT;
+
+ return ref_ctrl;
+}
+
+static u32 get_sdram_tim_1_reg(const struct lpddr2_ac_timings *timings,
+ const struct lpddr2_min_tck *min_tck,
+ const struct lpddr2_addressing *addressing)
+{
+ u32 tim1 = 0, val = 0;
+ val = max(min_tck->tWTR, ns_x2_2_cycles(timings->tWTRx2)) - 1;
+ tim1 |= val << OMAP44XX_REG_T_WTR_SHIFT;
+
+ if (addressing->num_banks == BANKS8)
+ val = (timings->tFAW * (*T_den) + 4 * (*T_num) - 1) /
+ (4 * (*T_num)) - 1;
+ else
+ val = max(min_tck->tRRD, ns_2_cycles(timings->tRRD)) - 1;
+
+ tim1 |= val << OMAP44XX_REG_T_RRD_SHIFT;
+
+ val = ns_2_cycles(timings->tRASmin + timings->tRPab) - 1;
+ tim1 |= val << OMAP44XX_REG_T_RC_SHIFT;
+
+ val = max(min_tck->tRAS_MIN, ns_2_cycles(timings->tRASmin)) - 1;
+ tim1 |= val << OMAP44XX_REG_T_RAS_SHIFT;
+
+ val = max(min_tck->tWR, ns_2_cycles(timings->tWR)) - 1;
+ tim1 |= val << OMAP44XX_REG_T_WR_SHIFT;
+
+ val = max(min_tck->tRCD, ns_2_cycles(timings->tRCD)) - 1;
+ tim1 |= val << OMAP44XX_REG_T_RCD_SHIFT;
+
+ val = max(min_tck->tRP_AB, ns_2_cycles(timings->tRPab)) - 1;
+ tim1 |= val << OMAP44XX_REG_T_RP_SHIFT;
+
+ return tim1;
+}
+
+static u32 get_sdram_tim_2_reg(const struct lpddr2_ac_timings *timings,
+ const struct lpddr2_min_tck *min_tck)
+{
+ u32 tim2 = 0, val = 0;
+ val = max(min_tck->tCKE, timings->tCKE) - 1;
+ tim2 |= val << OMAP44XX_REG_T_CKE_SHIFT;
+
+ val = max(min_tck->tRTP, ns_x2_2_cycles(timings->tRTPx2)) - 1;
+ tim2 |= val << OMAP44XX_REG_T_RTP_SHIFT;
+
+ /*
+ * tXSRD = tRFCab + 10 ns. XSRD and XSNR should have the
+ * same value
+ */
+ val = ns_2_cycles(timings->tXSR) - 1;
+ tim2 |= val << OMAP44XX_REG_T_XSRD_SHIFT;
+ tim2 |= val << OMAP44XX_REG_T_XSNR_SHIFT;
+
+ val = max(min_tck->tXP, ns_x2_2_cycles(timings->tXPx2)) - 1;
+ tim2 |= val << OMAP44XX_REG_T_XP_SHIFT;
+
+ return tim2;
+}
+
+static u32 get_sdram_tim_3_reg(const struct lpddr2_ac_timings *timings,
+ const struct lpddr2_min_tck *min_tck,
+ const struct lpddr2_addressing *addressing)
+{
+ u32 tim3 = 0, val = 0;
+ val = min(timings->tRASmax * 10 / addressing->t_REFI_us_x10 - 1, 0xF);
+ tim3 |= val << OMAP44XX_REG_T_RAS_MAX_SHIFT;
+
+ val = ns_2_cycles(timings->tRFCab) - 1;
+ tim3 |= val << OMAP44XX_REG_T_RFC_SHIFT;
+
+ val = ns_x2_2_cycles(timings->tDQSCKMAXx2) - 1;
+ tim3 |= val << OMAP44XX_REG_T_TDQSCKMAX_SHIFT;
+
+ val = ns_2_cycles(timings->tZQCS) - 1;
+ tim3 |= val << OMAP44XX_REG_ZQ_ZQCS_SHIFT;
+
+ val = max(min_tck->tCKESR, ns_2_cycles(timings->tCKESR)) - 1;
+ tim3 |= val << OMAP44XX_REG_T_CKESR_SHIFT;
+
+ return tim3;
+}
+
+static u32 get_zq_config_reg(const struct lpddr2_device_details *cs1_device,
+ const struct lpddr2_addressing *addressing,
+ u8 volt_ramp)
+{
+ u32 zq = 0, val = 0;
+ if (volt_ramp)
+ val =
+ EMIF_ZQCS_INTERVAL_DVFS_IN_US * 10 /
+ addressing->t_REFI_us_x10;
+ else
+ val =
+ EMIF_ZQCS_INTERVAL_NORMAL_IN_US * 10 /
+ addressing->t_REFI_us_x10;
+ zq |= val << OMAP44XX_REG_ZQ_REFINTERVAL_SHIFT;
+
+ zq |= (REG_ZQ_ZQCL_MULT - 1) << OMAP44XX_REG_ZQ_ZQCL_MULT_SHIFT;
+
+ zq |= (REG_ZQ_ZQINIT_MULT - 1) << OMAP44XX_REG_ZQ_ZQINIT_MULT_SHIFT;
+
+ zq |= REG_ZQ_SFEXITEN_ENABLE << OMAP44XX_REG_ZQ_SFEXITEN_SHIFT;
+
+ /*
+ * Assuming that two chipselects have a single calibration resistor
+ * If there are indeed two calibration resistors, then this flag should
+ * be enabled to take advantage of dual calibration feature.
+ * This data should ideally come from board files. But considering
+ * that none of the boards today have calibration resistors per CS,
+ * it would be an unnecessary overhead.
+ */
+ zq |= REG_ZQ_DUALCALEN_DISABLE << OMAP44XX_REG_ZQ_DUALCALEN_SHIFT;
+
+ zq |= REG_ZQ_CS0EN_ENABLE << OMAP44XX_REG_ZQ_CS0EN_SHIFT;
+
+ zq |= (cs1_device ? 1 : 0) << OMAP44XX_REG_ZQ_CS1EN_SHIFT;
+
+ return zq;
+}
+
+static u32 get_temp_alert_config(const struct lpddr2_device_details *cs1_device,
+ const struct lpddr2_addressing *addressing,
+ u8 is_derated)
+{
+ u32 alert = 0, interval;
+ interval =
+ TEMP_ALERT_POLL_INTERVAL_MS * 10000 / addressing->t_REFI_us_x10;
+ if (is_derated)
+ interval *= 4;
+ alert |= interval << OMAP44XX_REG_TA_REFINTERVAL_SHIFT;
+
+ alert |= TEMP_ALERT_CONFIG_DEVCT_1 << OMAP44XX_REG_TA_DEVCNT_SHIFT;
+
+ alert |= TEMP_ALERT_CONFIG_DEVWDT_32 << OMAP44XX_REG_TA_DEVWDT_SHIFT;
+
+ alert |= 1 << OMAP44XX_REG_TA_SFEXITEN_SHIFT;
+
+ alert |= 1 << OMAP44XX_REG_TA_CS0EN_SHIFT;
+
+ alert |= (cs1_device ? 1 : 0) << OMAP44XX_REG_TA_CS1EN_SHIFT;
+
+ return alert;
+}
+
+static u32 get_read_idle_ctrl_reg(u8 volt_ramp)
+{
+ u32 idle = 0, val = 0;
+ if (volt_ramp)
+ val = ns_2_cycles(READ_IDLE_INTERVAL_DVFS) / 64 - 1;
+ else
+ /*Maximum value in normal conditions - suggested by hw team */
+ val = 0x1FF;
+ idle |= val << OMAP44XX_REG_READ_IDLE_INTERVAL_SHIFT;
+
+ idle |= EMIF_REG_READ_IDLE_LEN_VAL << OMAP44XX_REG_READ_IDLE_LEN_SHIFT;
+
+ return idle;
+}
+
+static u32 get_ddr_phy_ctrl_1(u32 freq, u8 RL)
+{
+ u32 phy = 0, val = 0;
+
+ phy |= (RL + 2) << OMAP44XX_REG_READ_LATENCY_SHIFT;
+
+ if (freq <= 100000000)
+ val = EMIF_DLL_SLAVE_DLY_CTRL_100_MHZ_AND_LESS;
+ else if (freq <= 200000000)
+ val = EMIF_DLL_SLAVE_DLY_CTRL_200_MHZ;
+ else
+ val = EMIF_DLL_SLAVE_DLY_CTRL_400_MHZ;
+ phy |= val << OMAP44XX_REG_DLL_SLAVE_DLY_CTRL_SHIFT;
+
+ /* Other fields are constant magic values. Hardcode them together */
+ phy |= EMIF_DDR_PHY_CTRL_1_BASE_VAL <<
+ OMAP44XX_EMIF_DDR_PHY_CTRL_1_BASE_VAL_SHIFT;
+
+ return phy;
+}
+
+static u32 get_emif_mem_size(struct emif_device_details *devices)
+{
+ u32 size_mbytes = 0, temp;
+
+ if (!devices)
+ return 0;
+
+ if (devices->cs0_device_details) {
+ temp = devices->cs0_device_details->density;
+ size_mbytes += lpddr2_density_2_size_in_mbytes[temp];
+ }
+
+ if (devices->cs1_device_details) {
+ temp = devices->cs1_device_details->density;
+ size_mbytes += lpddr2_density_2_size_in_mbytes[temp];
+ }
+ /* convert to bytes */
+ return size_mbytes << 20;
+}
+
+/* Gets the encoding corresponding to a given DMM section size */
+u32 get_dmm_section_size_map(u32 section_size)
+{
+ /*
+ * Section size mapping:
+ * 0x0: 16-MiB section
+ * 0x1: 32-MiB section
+ * 0x2: 64-MiB section
+ * 0x3: 128-MiB section
+ * 0x4: 256-MiB section
+ * 0x5: 512-MiB section
+ * 0x6: 1-GiB section
+ * 0x7: 2-GiB section
+ */
+ section_size >>= 24; /* divide by 16 MB */
+ return log_2_n_round_down(section_size);
+}
+
+static void emif_calculate_regs(
+ const struct emif_device_details *emif_dev_details,
+ u32 freq, struct emif_regs *regs)
+{
+ u32 temp, sys_freq;
+ const struct lpddr2_addressing *addressing;
+ const struct lpddr2_ac_timings *timings;
+ const struct lpddr2_min_tck *min_tck;
+ const struct lpddr2_device_details *cs0_dev_details =
+ emif_dev_details->cs0_device_details;
+ const struct lpddr2_device_details *cs1_dev_details =
+ emif_dev_details->cs1_device_details;
+ const struct lpddr2_device_timings *cs0_dev_timings =
+ emif_dev_details->cs0_device_timings;
+
+ emif_assert(emif_dev_details);
+ emif_assert(regs);
+ /*
+ * You can not have a device on CS1 without one on CS0
+ * So configuring EMIF without a device on CS0 doesn't
+ * make sense
+ */
+ emif_assert(cs0_dev_details);
+ emif_assert(cs0_dev_details->type != LPDDR2_TYPE_NVM);
+ /*
+ * If there is a device on CS1 it should be same type as CS0
+ * (or NVM. But NVM is not supported in this driver yet)
+ */
+ emif_assert((cs1_dev_details == NULL) ||
+ (cs1_dev_details->type == LPDDR2_TYPE_NVM) ||
+ (cs0_dev_details->type == cs1_dev_details->type));
+ emif_assert(freq <= MAX_LPDDR2_FREQ);
+
+ set_ddr_clk_period(freq);
+
+ /*
+ * The device on CS0 is used for all timing calculations
+ * There is only one set of registers for timings per EMIF. So, if the
+ * second CS(CS1) has a device, it should have the same timings as the
+ * device on CS0
+ */
+ timings = get_timings_table(cs0_dev_timings->ac_timings, freq);
+ emif_assert(timings);
+ min_tck = cs0_dev_timings->min_tck;
+
+ temp = addressing_table_index(cs0_dev_details->type,
+ cs0_dev_details->density,
+ cs0_dev_details->io_width);
+
+ emif_assert((temp >= 0));
+ addressing = &(addressing_table[temp]);
+ emif_assert(addressing);
+
+ sys_freq = get_sys_clk_freq();
+
+ regs->sdram_config_init = get_sdram_config_reg(cs0_dev_details,
+ cs1_dev_details,
+ addressing, RL_BOOT);
+
+ regs->sdram_config = get_sdram_config_reg(cs0_dev_details,
+ cs1_dev_details,
+ addressing, RL_FINAL);
+
+ regs->ref_ctrl = get_sdram_ref_ctrl(freq, addressing);
+
+ regs->sdram_tim1 = get_sdram_tim_1_reg(timings, min_tck, addressing);
+
+ regs->sdram_tim2 = get_sdram_tim_2_reg(timings, min_tck);
+
+ regs->sdram_tim3 = get_sdram_tim_3_reg(timings, min_tck, addressing);
+
+ regs->read_idle_ctrl = get_read_idle_ctrl_reg(LPDDR2_VOLTAGE_STABLE);
+
+ regs->temp_alert_config =
+ get_temp_alert_config(cs1_dev_details, addressing, 0);
+
+ regs->zq_config = get_zq_config_reg(cs1_dev_details, addressing,
+ LPDDR2_VOLTAGE_STABLE);
+
+ regs->emif_ddr_phy_ctlr_1_init =
+ get_ddr_phy_ctrl_1(sys_freq / 2, RL_BOOT);
+
+ regs->emif_ddr_phy_ctlr_1 =
+ get_ddr_phy_ctrl_1(freq, RL_FINAL);
+
+ regs->freq = freq;
+
+ print_timing_reg(regs->sdram_config_init);
+ print_timing_reg(regs->sdram_config);
+ print_timing_reg(regs->ref_ctrl);
+ print_timing_reg(regs->sdram_tim1);
+ print_timing_reg(regs->sdram_tim2);
+ print_timing_reg(regs->sdram_tim3);
+ print_timing_reg(regs->read_idle_ctrl);
+ print_timing_reg(regs->temp_alert_config);
+ print_timing_reg(regs->zq_config);
+ print_timing_reg(regs->emif_ddr_phy_ctlr_1);
+ print_timing_reg(regs->emif_ddr_phy_ctlr_1_init);
+}
+#endif /* CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS */
+
+#ifdef CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS
+/* Base AC Timing values specified by JESD209-2 for 400MHz operation */
+static const struct lpddr2_ac_timings timings_jedec_400_mhz = {
+ .max_freq = 400000000,
+ .RL = 6,
+ .tRPab = 21,
+ .tRCD = 18,
+ .tWR = 15,
+ .tRASmin = 42,
+ .tRRD = 10,
+ .tWTRx2 = 15,
+ .tXSR = 140,
+ .tXPx2 = 15,
+ .tRFCab = 130,
+ .tRTPx2 = 15,
+ .tCKE = 3,
+ .tCKESR = 15,
+ .tZQCS = 90,
+ .tZQCL = 360,
+ .tZQINIT = 1000,
+ .tDQSCKMAXx2 = 11,
+ .tRASmax = 70,
+ .tFAW = 50
+};
+
+/* Base AC Timing values specified by JESD209-2 for 333 MHz operation */
+static const struct lpddr2_ac_timings timings_jedec_333_mhz = {
+ .max_freq = 333000000,
+ .RL = 5,
+ .tRPab = 21,
+ .tRCD = 18,
+ .tWR = 15,
+ .tRASmin = 42,
+ .tRRD = 10,
+ .tWTRx2 = 15,
+ .tXSR = 140,
+ .tXPx2 = 15,
+ .tRFCab = 130,
+ .tRTPx2 = 15,
+ .tCKE = 3,
+ .tCKESR = 15,
+ .tZQCS = 90,
+ .tZQCL = 360,
+ .tZQINIT = 1000,
+ .tDQSCKMAXx2 = 11,
+ .tRASmax = 70,
+ .tFAW = 50
+};
+
+/* Base AC Timing values specified by JESD209-2 for 200 MHz operation */
+static const struct lpddr2_ac_timings timings_jedec_200_mhz = {
+ .max_freq = 200000000,
+ .RL = 3,
+ .tRPab = 21,
+ .tRCD = 18,
+ .tWR = 15,
+ .tRASmin = 42,
+ .tRRD = 10,
+ .tWTRx2 = 20,
+ .tXSR = 140,
+ .tXPx2 = 15,
+ .tRFCab = 130,
+ .tRTPx2 = 15,
+ .tCKE = 3,
+ .tCKESR = 15,
+ .tZQCS = 90,
+ .tZQCL = 360,
+ .tZQINIT = 1000,
+ .tDQSCKMAXx2 = 11,
+ .tRASmax = 70,
+ .tFAW = 50
+};
+
+/*
+ * Min tCK values specified by JESD209-2
+ * Min tCK specifies the minimum duration of some AC timing parameters in terms
+ * of the number of cycles. If the calculated number of cycles based on the
+ * absolute time value is less than the min tCK value, min tCK value should
+ * be used instead. This typically happens at low frequencies.
+ */
+static const struct lpddr2_min_tck min_tck_jedec = {
+ .tRL = 3,
+ .tRP_AB = 3,
+ .tRCD = 3,
+ .tWR = 3,
+ .tRAS_MIN = 3,
+ .tRRD = 2,
+ .tWTR = 2,
+ .tXP = 2,
+ .tRTP = 2,
+ .tCKE = 3,
+ .tCKESR = 3,
+ .tFAW = 8
+};
+
+static const struct lpddr2_ac_timings const*
+ jedec_ac_timings[MAX_NUM_SPEEDBINS] = {
+ &timings_jedec_200_mhz,
+ &timings_jedec_333_mhz,
+ &timings_jedec_400_mhz
+};
+
+static const struct lpddr2_device_timings jedec_default_timings = {
+ .ac_timings = jedec_ac_timings,
+ .min_tck = &min_tck_jedec
+};
+
+void emif_get_device_timings(u32 emif_nr,
+ const struct lpddr2_device_timings **cs0_device_timings,
+ const struct lpddr2_device_timings **cs1_device_timings)
+{
+ /* Assume Identical devices on EMIF1 & EMIF2 */
+ *cs0_device_timings = &jedec_default_timings;
+ *cs1_device_timings = &jedec_default_timings;
+}
+#endif /* CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS */
+
+#ifdef CONFIG_SYS_AUTOMATIC_SDRAM_DETECTION
+const char *get_lpddr2_type(u8 type_id)
+{
+ switch (type_id) {
+ case LPDDR2_TYPE_S4:
+ return "LPDDR2-S4";
+ case LPDDR2_TYPE_S2:
+ return "LPDDR2-S2";
+ default:
+ return NULL;
+ }
+}
+
+const char *get_lpddr2_io_width(u8 width_id)
+{
+ switch (width_id) {
+ case LPDDR2_IO_WIDTH_8:
+ return "x8";
+ case LPDDR2_IO_WIDTH_16:
+ return "x16";
+ case LPDDR2_IO_WIDTH_32:
+ return "x32";
+ default:
+ return NULL;
+ }
+}
+
+const char *get_lpddr2_manufacturer(u32 manufacturer)
+{
+ switch (manufacturer) {
+ case LPDDR2_MANUFACTURER_SAMSUNG:
+ return "Samsung";
+ case LPDDR2_MANUFACTURER_QIMONDA:
+ return "Qimonda";
+ case LPDDR2_MANUFACTURER_ELPIDA:
+ return "Elpida";
+ case LPDDR2_MANUFACTURER_ETRON:
+ return "Etron";
+ case LPDDR2_MANUFACTURER_NANYA:
+ return "Nanya";
+ case LPDDR2_MANUFACTURER_HYNIX:
+ return "Hynix";
+ case LPDDR2_MANUFACTURER_MOSEL:
+ return "Mosel";
+ case LPDDR2_MANUFACTURER_WINBOND:
+ return "Winbond";
+ case LPDDR2_MANUFACTURER_ESMT:
+ return "ESMT";
+ case LPDDR2_MANUFACTURER_SPANSION:
+ return "Spansion";
+ case LPDDR2_MANUFACTURER_SST:
+ return "SST";
+ case LPDDR2_MANUFACTURER_ZMOS:
+ return "ZMOS";
+ case LPDDR2_MANUFACTURER_INTEL:
+ return "Intel";
+ case LPDDR2_MANUFACTURER_NUMONYX:
+ return "Numonyx";
+ case LPDDR2_MANUFACTURER_MICRON:
+ return "Micron";
+ default:
+ return NULL;
+ }
+}
+
+static void display_sdram_details(u32 emif_nr, u32 cs,
+ struct lpddr2_device_details *device)
+{
+ const char *mfg_str;
+ const char *type_str;
+ char density_str[10];
+ u32 density;
+
+ debug("EMIF%d CS%d\t", emif_nr, cs);
+
+ if (!device) {
+ debug("None\n");
+ return;
+ }
+
+ mfg_str = get_lpddr2_manufacturer(device->manufacturer);
+ type_str = get_lpddr2_type(device->type);
+
+ density = lpddr2_density_2_size_in_mbytes[device->density];
+ if ((density / 1024 * 1024) == density) {
+ density /= 1024;
+ sprintf(density_str, "%d GB", density);
+ } else
+ sprintf(density_str, "%d MB", density);
+ if (mfg_str && type_str)
+ debug("%s\t\t%s\t%s\n", mfg_str, type_str, density_str);
+}
+
+static u8 is_lpddr2_sdram_present(u32 base, u32 cs,
+ struct lpddr2_device_details *lpddr2_device)
+{
+ u32 mr = 0, temp;
+
+ mr = get_mr(base, cs, LPDDR2_MR0);
+ if (mr > 0xFF) {
+ /* Mode register value bigger than 8 bit */
+ return 0;
+ }
+
+ temp = (mr & LPDDR2_MR0_DI_MASK) >> LPDDR2_MR0_DI_SHIFT;
+ if (temp) {
+ /* Not SDRAM */
+ return 0;
+ }
+ temp = (mr & LPDDR2_MR0_DNVI_MASK) >> LPDDR2_MR0_DNVI_SHIFT;
+
+ if (temp) {
+ /* DNV supported - But DNV is only supported for NVM */
+ return 0;
+ }
+
+ mr = get_mr(base, cs, LPDDR2_MR4);
+ if (mr > 0xFF) {
+ /* Mode register value bigger than 8 bit */
+ return 0;
+ }
+
+ mr = get_mr(base, cs, LPDDR2_MR5);
+ if (mr >= 0xFF) {
+ /* Mode register value bigger than 8 bit */
+ return 0;
+ }
+
+ if (!get_lpddr2_manufacturer(mr)) {
+ /* Manufacturer not identified */
+ return 0;
+ }
+ lpddr2_device->manufacturer = mr;
+
+ mr = get_mr(base, cs, LPDDR2_MR6);
+ if (mr >= 0xFF) {
+ /* Mode register value bigger than 8 bit */
+ return 0;
+ }
+
+ mr = get_mr(base, cs, LPDDR2_MR7);
+ if (mr >= 0xFF) {
+ /* Mode register value bigger than 8 bit */
+ return 0;
+ }
+
+ mr = get_mr(base, cs, LPDDR2_MR8);
+ if (mr >= 0xFF) {
+ /* Mode register value bigger than 8 bit */
+ return 0;
+ }
+
+ temp = (mr & MR8_TYPE_MASK) >> MR8_TYPE_SHIFT;
+ if (!get_lpddr2_type(temp)) {
+ /* Not SDRAM */
+ return 0;
+ }
+ lpddr2_device->type = temp;
+
+ temp = (mr & MR8_DENSITY_MASK) >> MR8_DENSITY_SHIFT;
+ if (temp > LPDDR2_DENSITY_32Gb) {
+ /* Density not supported */
+ return 0;
+ }
+ lpddr2_device->density = temp;
+
+ temp = (mr & MR8_IO_WIDTH_MASK) >> MR8_IO_WIDTH_SHIFT;
+ if (!get_lpddr2_io_width(temp)) {
+ /* IO width unsupported value */
+ return 0;
+ }
+ lpddr2_device->io_width = temp;
+
+ /*
+ * If all the above tests pass we should
+ * have a device on this chip-select
+ */
+ return 1;
+}
+
+struct lpddr2_device_details *emif_get_device_details(u32 emif_nr, u8 cs,
+ struct lpddr2_device_details *lpddr2_dev_details)
+{
+ u32 phy;
+ u32 base = (emif_nr == 1) ? OMAP44XX_EMIF1 : OMAP44XX_EMIF2;
+ struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
+
+ if (!lpddr2_dev_details)
+ return NULL;
+
+ /* Do the minimum init for mode register accesses */
+ if (!running_from_sdram()) {
+ phy = get_ddr_phy_ctrl_1(get_sys_clk_freq() / 2, RL_BOOT);
+ writel(phy, &emif->emif_ddr_phy_ctrl_1);
+ }
+
+ if (!(is_lpddr2_sdram_present(base, cs, lpddr2_dev_details)))
+ return NULL;
+
+ display_sdram_details(emif_num(base), cs, lpddr2_dev_details);
+
+ return lpddr2_dev_details;
+}
+#endif /* CONFIG_SYS_AUTOMATIC_SDRAM_DETECTION */
+
+static void do_sdram_init(u32 base)
+{
+ const struct emif_regs *regs;
+ u32 in_sdram, emif_nr;
+
+ debug(">>do_sdram_init() %x\n", base);
+
+ in_sdram = running_from_sdram();
+ emif_nr = (base == OMAP44XX_EMIF1) ? 1 : 2;
+
+#ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
+ emif_get_reg_dump(emif_nr, ®s);
+ if (!regs) {
+ debug("EMIF: reg dump not provided\n");
+ return;
+ }
+#else
+ /*
+ * The user has not provided the register values. We need to
+ * calculate it based on the timings and the DDR frequency
+ */
+ struct emif_device_details dev_details;
+ struct emif_regs calculated_regs;
+
+ /*
+ * Get device details:
+ * - Discovered if CONFIG_SYS_AUTOMATIC_SDRAM_DETECTION is set
+ * - Obtained from user otherwise
+ */
+ struct lpddr2_device_details cs0_dev_details, cs1_dev_details;
+ emif_reset_phy(base);
+ dev_details.cs0_device_details = emif_get_device_details(base, CS0,
+ &cs0_dev_details);
+ dev_details.cs1_device_details = emif_get_device_details(base, CS1,
+ &cs1_dev_details);
+ emif_reset_phy(base);
+
+ /* Return if no devices on this EMIF */
+ if (!dev_details.cs0_device_details &&
+ !dev_details.cs1_device_details) {
+ emif_sizes[emif_nr - 1] = 0;
+ return;
+ }
+
+ if (!in_sdram)
+ emif_sizes[emif_nr - 1] = get_emif_mem_size(&dev_details);
+
+ /*
+ * Get device timings:
+ * - Default timings specified by JESD209-2 if
+ * CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS is set
+ * - Obtained from user otherwise
+ */
+ emif_get_device_timings(emif_nr, &dev_details.cs0_device_timings,
+ &dev_details.cs1_device_timings);
+
+ /* Calculate the register values */
+ emif_calculate_regs(&dev_details, omap4_ddr_clk(), &calculated_regs);
+ regs = &calculated_regs;
+#endif /* CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS */
+
+ /*
+ * Initializing the LPDDR2 device can not happen from SDRAM.
+ * Changing the timing registers in EMIF can happen(going from one
+ * OPP to another)
+ */
+ if (!in_sdram)
+ lpddr2_init(base, regs);
+
+ /* Write to the shadow registers */
+ emif_update_timings(base, regs);
+
+ debug("<<do_sdram_init() %x\n", base);
+}
+
+static void emif_post_init_config(u32 base)
+{
+ struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
+ u32 omap4_rev = omap_revision();
+
+ /* reset phy on ES2.0 */
+ if (omap4_rev == OMAP4430_ES2_0)
+ emif_reset_phy(base);
+
+ /* Put EMIF back in smart idle on ES1.0 */
+ if (omap4_rev == OMAP4430_ES1_0)
+ writel(0x80000000, &emif->emif_pwr_mgmt_ctrl);
+}
+
+static void dmm_init(u32 base)
+{
+ const struct dmm_lisa_map_regs *lisa_map_regs;
+
+#ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
+ emif_get_dmm_regs(&lisa_map_regs);
+#else
+ u32 emif1_size, emif2_size, mapped_size, section_map = 0;
+ u32 section_cnt, sys_addr;
+ struct dmm_lisa_map_regs lis_map_regs_calculated = {0};
+
+ mapped_size = 0;
+ section_cnt = 3;
+ sys_addr = CONFIG_SYS_SDRAM_BASE;
+ emif1_size = emif_sizes[0];
+ emif2_size = emif_sizes[1];
+ debug("emif1_size 0x%x emif2_size 0x%x\n", emif1_size, emif2_size);
+
+ if (!emif1_size && !emif2_size)
+ return;
+
+ /* symmetric interleaved section */
+ if (emif1_size && emif2_size) {
+ mapped_size = min(emif1_size, emif2_size);
+ section_map = DMM_LISA_MAP_INTERLEAVED_BASE_VAL;
+ section_map |= 0 << OMAP44XX_SDRC_ADDR_SHIFT;
+ /* only MSB */
+ section_map |= (sys_addr >> 24) <<
+ OMAP44XX_SYS_ADDR_SHIFT;
+ section_map |= get_dmm_section_size_map(mapped_size * 2)
+ << OMAP44XX_SYS_SIZE_SHIFT;
+ lis_map_regs_calculated.dmm_lisa_map_3 = section_map;
+ emif1_size -= mapped_size;
+ emif2_size -= mapped_size;
+ sys_addr += (mapped_size * 2);
+ section_cnt--;
+ }
+
+ /*
+ * Single EMIF section(we can have a maximum of 1 single EMIF
+ * section- either EMIF1 or EMIF2 or none, but not both)
+ */
+ if (emif1_size) {
+ section_map = DMM_LISA_MAP_EMIF1_ONLY_BASE_VAL;
+ section_map |= get_dmm_section_size_map(emif1_size)
+ << OMAP44XX_SYS_SIZE_SHIFT;
+ /* only MSB */
+ section_map |= (mapped_size >> 24) <<
+ OMAP44XX_SDRC_ADDR_SHIFT;
+ /* only MSB */
+ section_map |= (sys_addr >> 24) << OMAP44XX_SYS_ADDR_SHIFT;
+ section_cnt--;
+ }
+ if (emif2_size) {
+ section_map = DMM_LISA_MAP_EMIF2_ONLY_BASE_VAL;
+ section_map |= get_dmm_section_size_map(emif2_size) <<
+ OMAP44XX_SYS_SIZE_SHIFT;
+ /* only MSB */
+ section_map |= mapped_size >> 24 << OMAP44XX_SDRC_ADDR_SHIFT;
+ /* only MSB */
+ section_map |= sys_addr >> 24 << OMAP44XX_SYS_ADDR_SHIFT;
+ section_cnt--;
+ }
+
+ if (section_cnt == 2) {
+ /* Only 1 section - either symmetric or single EMIF */
+ lis_map_regs_calculated.dmm_lisa_map_3 = section_map;
+ lis_map_regs_calculated.dmm_lisa_map_2 = 0;
+ lis_map_regs_calculated.dmm_lisa_map_1 = 0;
+ } else {
+ /* 2 sections - 1 symmetric, 1 single EMIF */
+ lis_map_regs_calculated.dmm_lisa_map_2 = section_map;
+ lis_map_regs_calculated.dmm_lisa_map_1 = 0;
+ }
+
+ /* TRAP for invalid TILER mappings in section 0 */
+ lis_map_regs_calculated.dmm_lisa_map_0 = DMM_LISA_MAP_0_INVAL_ADDR_TRAP;
+
+ lisa_map_regs = &lis_map_regs_calculated;
+#endif
+ struct dmm_lisa_map_regs *hw_lisa_map_regs =
+ (struct dmm_lisa_map_regs *)base;
+
+ writel(0, &hw_lisa_map_regs->dmm_lisa_map_3);
+ writel(0, &hw_lisa_map_regs->dmm_lisa_map_2);
+ writel(0, &hw_lisa_map_regs->dmm_lisa_map_1);
+ writel(0, &hw_lisa_map_regs->dmm_lisa_map_0);
+
+ writel(lisa_map_regs->dmm_lisa_map_3,
+ &hw_lisa_map_regs->dmm_lisa_map_3);
+ writel(lisa_map_regs->dmm_lisa_map_2,
+ &hw_lisa_map_regs->dmm_lisa_map_2);
+ writel(lisa_map_regs->dmm_lisa_map_1,
+ &hw_lisa_map_regs->dmm_lisa_map_1);
+ writel(lisa_map_regs->dmm_lisa_map_0,
+ &hw_lisa_map_regs->dmm_lisa_map_0);
+
+ if (omap_revision() >= OMAP4460_ES1_0) {
+ hw_lisa_map_regs =
+ (struct dmm_lisa_map_regs *)OMAP44XX_MA_LISA_MAP_BASE;
+
+ writel(lisa_map_regs->dmm_lisa_map_3,
+ &hw_lisa_map_regs->dmm_lisa_map_3);
+ writel(lisa_map_regs->dmm_lisa_map_2,
+ &hw_lisa_map_regs->dmm_lisa_map_2);
+ writel(lisa_map_regs->dmm_lisa_map_1,
+ &hw_lisa_map_regs->dmm_lisa_map_1);
+ writel(lisa_map_regs->dmm_lisa_map_0,
+ &hw_lisa_map_regs->dmm_lisa_map_0);
+ }
+}
+
+/*
+ * SDRAM initialization:
+ * SDRAM initialization has two parts:
+ * 1. Configuring the SDRAM device
+ * 2. Update the AC timings related parameters in the EMIF module
+ * (1) should be done only once and should not be done while we are
+ * running from SDRAM.
+ * (2) can and should be done more than once if OPP changes.
+ * Particularly, this may be needed when we boot without SPL and
+ * and using Configuration Header(CH). ROM code supports only at 50% OPP
+ * at boot (low power boot). So u-boot has to switch to OPP100 and update
+ * the frequency. So,
+ * Doing (1) and (2) makes sense - first time initialization
+ * Doing (2) and not (1) makes sense - OPP change (when using CH)
+ * Doing (1) and not (2) doen't make sense
+ * See do_sdram_init() for the details
+ */
+void sdram_init(void)
+{
+ u32 in_sdram, size_prog, size_detect;
+
+ debug(">>sdram_init()\n");
+
+ if (omap4_hw_init_context() == OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL)
+ return;
+
+ in_sdram = running_from_sdram();
+ debug("in_sdram = %d\n", in_sdram);
+
+ if (!in_sdram)
+ bypass_dpll(&prcm->cm_clkmode_dpll_core);
+
+
+ do_sdram_init(OMAP44XX_EMIF1);
+ do_sdram_init(OMAP44XX_EMIF2);
+
+ if (!in_sdram) {
+ dmm_init(OMAP44XX_DMM_LISA_MAP_BASE);
+ emif_post_init_config(OMAP44XX_EMIF1);
+ emif_post_init_config(OMAP44XX_EMIF2);
+
+ }
+
+ /* for the shadow registers to take effect */
+ freq_update_core();
+
+ /* Do some testing after the init */
+ if (!in_sdram) {
+ size_prog = omap4_sdram_size();
+ size_detect = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE,
+ size_prog);
+ /* Compare with the size programmed */
+ if (size_detect != size_prog) {
+ printf("SDRAM: identified size not same as expected"
+ " size identified: %x expected: %x\n",
+ size_detect,
+ size_prog);
+ } else
+ debug("get_ram_size() successful");
+ }
+
+ debug("<<sdram_init()\n");
+}
diff --git a/arch/arm/cpu/armv7/omap-common/hwinit-common.c b/arch/arm/cpu/armv7/omap-common/hwinit-common.c
new file mode 100644
index 0000000..8e765cf
--- /dev/null
+++ b/arch/arm/cpu/armv7/omap-common/hwinit-common.c
@@ -0,0 +1,384 @@
+/*
+ *
+ * Common functions for OMAP4 based boards
+ *
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Author :
+ * Aneesh V <aneesh@ti.com>
+ * Steve Sakoman <steve@sakoman.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+#include <common.h>
+#include <asm/armv7.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/sizes.h>
+#include <asm/arch/emif.h>
+#include <asm/arch/gpio.h>
+#include "../omap4/omap4_mux_data.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+u32 *const omap4_revision = (u32 *)OMAP4_SRAM_SCRATCH_OMAP4_REV;
+
+static const struct gpio_bank gpio_bank_44xx[6] = {
+ { (void *)OMAP44XX_GPIO1_BASE, METHOD_GPIO_24XX },
+ { (void *)OMAP44XX_GPIO2_BASE, METHOD_GPIO_24XX },
+ { (void *)OMAP44XX_GPIO3_BASE, METHOD_GPIO_24XX },
+ { (void *)OMAP44XX_GPIO4_BASE, METHOD_GPIO_24XX },
+ { (void *)OMAP44XX_GPIO5_BASE, METHOD_GPIO_24XX },
+ { (void *)OMAP44XX_GPIO6_BASE, METHOD_GPIO_24XX },
+};
+
+const struct gpio_bank *const omap_gpio_bank = gpio_bank_44xx;
+
+#ifdef CONFIG_SPL_BUILD
+/*
+ * We use static variables because global data is not ready yet.
+ * Initialized data is available in SPL right from the beginning.
+ * We would not typically need to save these parameters in regular
+ * U-Boot. This is needed only in SPL at the moment.
+ */
+u32 omap4_boot_device = BOOT_DEVICE_MMC1;
+u32 omap4_boot_mode = MMCSD_MODE_FAT;
+
+u32 omap_boot_device(void)
+{
+ return omap4_boot_device;
+}
+
+u32 omap_boot_mode(void)
+{
+ return omap4_boot_mode;
+}
+
+/*
+ * Some tuning of IOs for optimal power and performance
+ */
+static void do_io_settings(void)
+{
+ u32 lpddr2io;
+ struct control_lpddr2io_regs *lpddr2io_regs =
+ (struct control_lpddr2io_regs *)LPDDR2_IO_REGS_BASE;
+ struct omap4_sys_ctrl_regs *const ctrl =
+ (struct omap4_sys_ctrl_regs *)SYSCTRL_GENERAL_CORE_BASE;
+
+ u32 omap4_rev = omap_revision();
+
+ if (omap4_rev == OMAP4430_ES1_0)
+ lpddr2io = CONTROL_LPDDR2IO_SLEW_125PS_DRV8_PULL_DOWN;
+ else if (omap4_rev == OMAP4430_ES2_0)
+ lpddr2io = CONTROL_LPDDR2IO_SLEW_325PS_DRV8_GATE_KEEPER;
+ else
+ lpddr2io = CONTROL_LPDDR2IO_SLEW_315PS_DRV12_PULL_DOWN;
+
+ /* EMIF1 */
+ writel(lpddr2io, &lpddr2io_regs->control_lpddr2io1_0);
+ writel(lpddr2io, &lpddr2io_regs->control_lpddr2io1_1);
+ /* No pull for GR10 as per hw team's recommendation */
+ writel(lpddr2io & ~LPDDR2IO_GR10_WD_MASK,
+ &lpddr2io_regs->control_lpddr2io1_2);
+ writel(CONTROL_LPDDR2IO_3_VAL, &lpddr2io_regs->control_lpddr2io1_3);
+
+ /* EMIF2 */
+ writel(lpddr2io, &lpddr2io_regs->control_lpddr2io2_0);
+ writel(lpddr2io, &lpddr2io_regs->control_lpddr2io2_1);
+ /* No pull for GR10 as per hw team's recommendation */
+ writel(lpddr2io & ~LPDDR2IO_GR10_WD_MASK,
+ &lpddr2io_regs->control_lpddr2io2_2);
+ writel(CONTROL_LPDDR2IO_3_VAL, &lpddr2io_regs->control_lpddr2io2_3);
+
+ /*
+ * Some of these settings (TRIM values) come from eFuse and are
+ * in turn programmed in the eFuse at manufacturing time after
+ * calibration of the device. Do the software over-ride only if
+ * the device is not correctly trimmed
+ */
+ if (!(readl(&ctrl->control_std_fuse_opp_bgap) & 0xFFFF)) {
+
+ writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
+ &ctrl->control_ldosram_iva_voltage_ctrl);
+
+ writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
+ &ctrl->control_ldosram_mpu_voltage_ctrl);
+
+ writel(LDOSRAM_VOLT_CTRL_OVERRIDE,
+ &ctrl->control_ldosram_core_voltage_ctrl);
+ }
+
+ if (!readl(&ctrl->control_efuse_1))
+ writel(CONTROL_EFUSE_1_OVERRIDE, &ctrl->control_efuse_1);
+
+ if (!readl(&ctrl->control_efuse_2))
+ writel(CONTROL_EFUSE_2_OVERRIDE, &ctrl->control_efuse_2);
+}
+#endif
+
+void do_set_mux(u32 base, struct pad_conf_entry const *array, int size)
+{
+ int i;
+ struct pad_conf_entry *pad = (struct pad_conf_entry *) array;
+
+ for (i = 0; i < size; i++, pad++)
+ writew(pad->val, base + pad->offset);
+}
+
+static void set_muxconf_regs_essential(void)
+{
+ do_set_mux(CONTROL_PADCONF_CORE, core_padconf_array_essential,
+ sizeof(core_padconf_array_essential) /
+ sizeof(struct pad_conf_entry));
+
+ do_set_mux(CONTROL_PADCONF_WKUP, wkup_padconf_array_essential,
+ sizeof(wkup_padconf_array_essential) /
+ sizeof(struct pad_conf_entry));
+
+ if (omap_revision() >= OMAP4460_ES1_0)
+ do_set_mux(CONTROL_PADCONF_WKUP,
+ wkup_padconf_array_essential_4460,
+ sizeof(wkup_padconf_array_essential_4460) /
+ sizeof(struct pad_conf_entry));
+}
+
+static void set_mux_conf_regs(void)
+{
+ switch (omap4_hw_init_context()) {
+ case OMAP_INIT_CONTEXT_SPL:
+ set_muxconf_regs_essential();
+ break;
+ case OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL:
+ set_muxconf_regs_non_essential();
+ break;
+ case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR:
+ case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH:
+ set_muxconf_regs_essential();
+ set_muxconf_regs_non_essential();
+ break;
+ }
+}
+
+static u32 cortex_a9_rev(void)
+{
+
+ unsigned int rev;
+
+ /* Read Main ID Register (MIDR) */
+ asm ("mrc p15, 0, %0, c0, c0, 0" : "=r" (rev));
+
+ return rev;
+}
+
+static void init_omap4_revision(void)
+{
+ /*
+ * For some of the ES2/ES1 boards ID_CODE is not reliable:
+ * Also, ES1 and ES2 have different ARM revisions
+ * So use ARM revision for identification
+ */
+ unsigned int arm_rev = cortex_a9_rev();
+
+ switch (arm_rev) {
+ case MIDR_CORTEX_A9_R0P1:
+ *omap4_revision = OMAP4430_ES1_0;
+ break;
+ case MIDR_CORTEX_A9_R1P2:
+ switch (readl(CONTROL_ID_CODE)) {
+ case OMAP4430_CONTROL_ID_CODE_ES2_0:
+ *omap4_revision = OMAP4430_ES2_0;
+ break;
+ case OMAP4430_CONTROL_ID_CODE_ES2_1:
+ *omap4_revision = OMAP4430_ES2_1;
+ break;
+ case OMAP4430_CONTROL_ID_CODE_ES2_2:
+ *omap4_revision = OMAP4430_ES2_2;
+ break;
+ default:
+ *omap4_revision = OMAP4430_ES2_0;
+ break;
+ }
+ break;
+ case MIDR_CORTEX_A9_R1P3:
+ *omap4_revision = OMAP4430_ES2_3;
+ break;
+ case MIDR_CORTEX_A9_R2P10:
+ switch (readl(CONTROL_ID_CODE)) {
+ case OMAP4460_CONTROL_ID_CODE_ES1_0:
+ *omap4_revision = OMAP4460_ES1_0;
+ break;
+ case OMAP4460_CONTROL_ID_CODE_ES1_1:
+ *omap4_revision = OMAP4460_ES1_1;
+ break;
+ default:
+ *omap4_revision = OMAP4460_ES1_0;
+ break;
+ }
+ break;
+ default:
+ *omap4_revision = OMAP4430_SILICON_ID_INVALID;
+ break;
+ }
+}
+
+void omap_rev_string(char *omap4_rev_string)
+{
+ u32 omap4_rev = omap_revision();
+ u32 omap4_variant = (omap4_rev & 0xFFFF0000) >> 16;
+ u32 major_rev = (omap4_rev & 0x00000F00) >> 8;
+ u32 minor_rev = (omap4_rev & 0x000000F0) >> 4;
+
+ sprintf(omap4_rev_string, "OMAP%x ES%x.%x", omap4_variant, major_rev,
+ minor_rev);
+}
+
+/*
+ * Routine: s_init
+ * Description: Does early system init of watchdog, muxing, andclocks
+ * Watchdog disable is done always. For the rest what gets done
+ * depends on the boot mode in which this function is executed
+ * 1. s_init of SPL running from SRAM
+ * 2. s_init of U-Boot running from FLASH
+ * 3. s_init of U-Boot loaded to SDRAM by SPL
+ * 4. s_init of U-Boot loaded to SDRAM by ROM code using the
+ * Configuration Header feature
+ * Please have a look at the respective functions to see what gets
+ * done in each of these cases
+ * This function is called with SRAM stack.
+ */
+void s_init(void)
+{
+ init_omap4_revision();
+ watchdog_init();
+ set_mux_conf_regs();
+#ifdef CONFIG_SPL_BUILD
+ setup_clocks_for_console();
+ preloader_console_init();
+ do_io_settings();
+#endif
+ prcm_init();
+#ifdef CONFIG_SPL_BUILD
+ /* For regular u-boot sdram_init() is called from dram_init() */
+ sdram_init();
+#endif
+}
+
+/*
+ * Routine: wait_for_command_complete
+ * Description: Wait for posting to finish on watchdog
+ */
+void wait_for_command_complete(struct watchdog *wd_base)
+{
+ int pending = 1;
+ do {
+ pending = readl(&wd_base->wwps);
+ } while (pending);
+}
+
+/*
+ * Routine: watchdog_init
+ * Description: Shut down watch dogs
+ */
+void watchdog_init(void)
+{
+ struct watchdog *wd2_base = (struct watchdog *)WDT2_BASE;
+
+ writel(WD_UNLOCK1, &wd2_base->wspr);
+ wait_for_command_complete(wd2_base);
+ writel(WD_UNLOCK2, &wd2_base->wspr);
+}
+
+
+/*
+ * This function finds the SDRAM size available in the system
+ * based on DMM section configurations
+ * This is needed because the size of memory installed may be
+ * different on different versions of the board
+ */
+u32 omap4_sdram_size(void)
+{
+ u32 section, i, total_size = 0, size, addr;
+ for (i = 0; i < 4; i++) {
+ section = __raw_readl(OMAP44XX_DMM_LISA_MAP_BASE + i*4);
+ addr = section & OMAP44XX_SYS_ADDR_MASK;
+ /* See if the address is valid */
+ if ((addr >= OMAP44XX_DRAM_ADDR_SPACE_START) &&
+ (addr < OMAP44XX_DRAM_ADDR_SPACE_END)) {
+ size = ((section & OMAP44XX_SYS_SIZE_MASK) >>
+ OMAP44XX_SYS_SIZE_SHIFT);
+ size = 1 << size;
+ size *= SZ_16M;
+ total_size += size;
+ }
+ }
+ return total_size;
+}
+
+
+/*
+ * Routine: dram_init
+ * Description: sets uboots idea of sdram size
+ */
+int dram_init(void)
+{
+ sdram_init();
+ gd->ram_size = omap4_sdram_size();
+
+ return 0;
+}
+
+/*
+ * Print board information
+ */
+int checkboard(void)
+{
+ puts(sysinfo.board_string);
+ return 0;
+}
+
+/*
+* This function is called by start_armboot. You can reliably use static
+* data. Any boot-time function that require static data should be
+* called from here
+*/
+int arch_cpu_init(void)
+{
+ return 0;
+}
+
+#ifndef CONFIG_SYS_L2CACHE_OFF
+void v7_outer_cache_enable(void)
+{
+ set_pl310_ctrl_reg(1);
+}
+
+void v7_outer_cache_disable(void)
+{
+ set_pl310_ctrl_reg(0);
+}
+#endif
+
+#ifndef CONFIG_SYS_DCACHE_OFF
+void enable_caches(void)
+{
+ /* Enable D-cache. I-cache is already enabled in start.S */
+ dcache_enable();
+}
+#endif
diff --git a/arch/arm/cpu/armv7/omap-common/lowlevel_init.S b/arch/arm/cpu/armv7/omap-common/lowlevel_init.S
new file mode 100644
index 0000000..91525ec
--- /dev/null
+++ b/arch/arm/cpu/armv7/omap-common/lowlevel_init.S
@@ -0,0 +1,87 @@
+/*
+ * Board specific setup info
+ *
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Author :
+ * Aneesh V <aneesh@ti.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <asm/arch/omap4.h>
+#ifdef CONFIG_SPL_BUILD
+.global save_boot_params
+save_boot_params:
+ /*
+ * See if the rom code passed pointer is valid:
+ * It is not valid if it is not in non-secure SRAM
+ * This may happen if you are booting with the help of
+ * debugger
+ */
+ ldr r2, =NON_SECURE_SRAM_START
+ cmp r2, r0
+ bgt 1f
+ ldr r2, =NON_SECURE_SRAM_END
+ cmp r2, r0
+ blt 1f
+
+ /* Store the boot device in omap4_boot_device */
+ ldr r2, [r0, #BOOT_DEVICE_OFFSET] @ r1 <- value of boot device
+ and r2, #BOOT_DEVICE_MASK
+ ldr r3, =omap4_boot_device
+ str r2, [r3] @ omap4_boot_device <- r1
+
+ /* Store the boot mode (raw/FAT) in omap4_boot_mode */
+ ldr r2, [r0, #DEV_DESC_PTR_OFFSET] @ get the device descriptor ptr
+ ldr r2, [r2, #DEV_DATA_PTR_OFFSET] @ get the pDeviceData ptr
+ ldr r2, [r2, #BOOT_MODE_OFFSET] @ get the boot mode
+ ldr r3, =omap4_boot_mode
+ str r2, [r3]
+1:
+ bx lr
+#endif
+
+.globl lowlevel_init
+lowlevel_init:
+ /*
+ * Setup a temporary stack
+ */
+ ldr sp, =LOW_LEVEL_SRAM_STACK
+
+ /*
+ * Save the old lr(passed in ip) and the current lr to stack
+ */
+ push {ip, lr}
+
+ /*
+ * go setup pll, mux, memory
+ */
+ bl s_init
+ pop {ip, pc}
+
+.globl set_pl310_ctrl_reg
+set_pl310_ctrl_reg:
+ PUSH {r4-r11, lr} @ save registers - ROM code may pollute
+ @ our registers
+ LDR r12, =0x102 @ Set PL310 control register - value in R0
+ .word 0xe1600070 @ SMC #0 - hand assembled because -march=armv5
+ @ call ROM Code API to set control register
+ POP {r4-r11, pc}
diff --git a/arch/arm/cpu/armv7/omap-common/mem-common.c b/arch/arm/cpu/armv7/omap-common/mem-common.c
new file mode 100644
index 0000000..878f0e3
--- /dev/null
+++ b/arch/arm/cpu/armv7/omap-common/mem-common.c
@@ -0,0 +1,45 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Steve Sakoman <steve@sakoman.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <asm/arch/cpu.h>
+#include <asm/arch/sys_proto.h>
+
+struct gpmc *gpmc_cfg;
+
+/*****************************************************
+ * gpmc_init(): init gpmc bus
+ * This code can only be executed from SRAM or SDRAM.
+ *****************************************************/
+void gpmc_init(void)
+{
+ gpmc_cfg = (struct gpmc *)GPMC_BASE;
+
+ /* global settings */
+ writel(0, &gpmc_cfg->irqenable); /* isr's sources masked */
+ writel(0, &gpmc_cfg->timeout_control);/* timeout disable */
+
+ /*
+ * Disable the GPMC0 config set by ROM code
+ * It conflicts with our MPDB (both at 0x08000000)
+ */
+ writel(0, &gpmc_cfg->cs[0].config7);
+}