| /* |
| * Board specific setup info |
| * |
| * (C) Copyright 2004 Ales Jindra <jindra@2n.cz> |
| * (C) Copyright 2005 Ladislav Michl <michl@2n.cz> |
| * |
| * 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 <config.h> |
| #include <version.h> |
| |
| _TEXT_BASE: |
| .word TEXT_BASE /* SDRAM load addr from config.mk */ |
| |
| OMAP5910_LPG1_BASE: .word 0xfffbd000 |
| OMAP5910_TIPB_SWITCHES_BASE: .word 0xfffbc800 |
| OMAP5910_MPU_TC_BASE: .word 0xfffecc00 |
| OMAP5910_MPU_CLKM_BASE: .word 0xfffece00 |
| OMAP5910_ULPD_PWR_MNG_BASE: .word 0xfffe0800 |
| OMAP5910_DPLL1_BASE: .word 0xfffecf00 |
| OMAP5910_GPIO_BASE: .word 0xfffce000 |
| OMAP5910_MPU_WD_TIMER_BASE: .word 0xfffec800 |
| OMAP5910_MPUI_BASE: .word 0xfffec900 |
| |
| _OMAP5910_ARM_CKCTL: .word OMAP5910_ARM_CKCTL |
| _OMAP5910_ARM_EN_CLK: .word OMAP5910_ARM_EN_CLK |
| |
| OMAP5910_MPUI_CTRL: .word 0x0000ff1b |
| |
| VAL_EMIFS_CS0_CONFIG: .word 0x00009090 |
| VAL_EMIFS_CS1_CONFIG: .word 0x00003031 |
| VAL_EMIFS_CS2_CONFIG: .word 0x0000a0a1 |
| VAL_EMIFS_CS3_CONFIG: .word 0x0000c0c0 |
| VAL_EMIFS_DYN_WAIT: .word 0x00000000 |
| /* autorefresh counter 0x246 ((64000000/13.4)-400)/8192) */ |
| /* SLRF SD_RET ARE SDRAM_TYPE ARCV SDRAM_FREQUENCY PWD CLK */ |
| |
| #if (PHYS_SDRAM_1_SIZE == SZ_32M) |
| VAL_EMIFF_SDRAM_CONFIG: .word ((0 << 0) | (0 << 1) | (3 << 2) | (0xf << 4) | (0x246 << 8) | (0 << 24) | (0 << 26) | (0 << 27)) |
| #else |
| VAL_EMIFF_SDRAM_CONFIG: .word ((0 << 0) | (0 << 1) | (3 << 2) | (0xd << 4) | (0x246 << 8) | (0 << 24) | (0 << 26) | (0 << 27)) |
| #endif |
| |
| VAL_EMIFF_SDRAM_CONFIG2: .word 0x00000003 |
| VAL_EMIFF_MRS: .word 0x00000037 |
| |
| /* |
| * GPIO04 - Green LED (Red LED is connected to LED Pulse Generator) |
| * GPIO07 - LAN91C111 reset |
| */ |
| GPIO_DIRECTION: |
| .word 0x0000ff6f |
| /* |
| * Disable everything (green LED is connected via invertor) |
| */ |
| GPIO_OUTPUT: |
| .word 0x00000010 |
| |
| MUX_CONFIG_BASE: |
| .word 0xfffe1000 |
| |
| MUX_CONFIG_VALUES: |
| .align 4 |
| .word 0x00000000 @ FUNC_MUX_CTRL_0 |
| .word 0x00000000 @ FUNC_MUX_CTRL_1 |
| .word 0x00000000 @ FUNC_MUX_CTRL_2 |
| .word 0x00000000 @ FUNC_MUX_CTRL_3 |
| .word 0x00000000 @ FUNC_MUX_CTRL_4 |
| .word 0x02080480 @ FUNC_MUX_CTRL_5 |
| .word 0x0100001c @ FUNC_MUX_CTRL_6 |
| .word 0x0004800b @ FUNC_MUX_CTRL_7 |
| .word 0x10001200 @ FUNC_MUX_CTRL_8 |
| .word 0x01201012 @ FUNC_MUX_CTRL_9 |
| .word 0x02082248 @ FUNC_MUX_CTRL_A |
| .word 0x00000248 @ FUNC_MUX_CTRL_B |
| .word 0x12240000 @ FUNC_MUX_CTRL_C |
| .word 0x00002000 @ FUNC_MUX_CTRL_D |
| .word 0x00000000 @ PULL_DWN_CTRL_0 |
| .word 0x00000800 @ PULL_DWN_CTRL_1 |
| .word 0x01801000 @ PULL_DWN_CTRL_2 |
| .word 0x00000000 @ PULL_DWN_CTRL_3 |
| .word 0x00000000 @ GATE_INH_CTRL_0 |
| .word 0x00000000 @ VOLTAGE_CTRL_0 |
| .word 0x00000000 @ TEST_DBG_CTRL_0 |
| .word 0x00000006 @ MOD_CONF_CTRL_0 |
| .word 0x0000eaef @ COMP_MODE_CTRL_0 |
| |
| MUX_CONFIG_OFFSETS: |
| .align 1 |
| .byte 0x00 @ FUNC_MUX_CTRL_0 |
| .byte 0x04 @ FUNC_MUX_CTRL_1 |
| .byte 0x08 @ FUNC_MUX_CTRL_2 |
| .byte 0x10 @ FUNC_MUX_CTRL_3 |
| .byte 0x14 @ FUNC_MUX_CTRL_4 |
| .byte 0x18 @ FUNC_MUX_CTRL_5 |
| .byte 0x1c @ FUNC_MUX_CTRL_6 |
| .byte 0x20 @ FUNC_MUX_CTRL_7 |
| .byte 0x24 @ FUNC_MUX_CTRL_8 |
| .byte 0x28 @ FUNC_MUX_CTRL_9 |
| .byte 0x2c @ FUNC_MUX_CTRL_A |
| .byte 0x30 @ FUNC_MUX_CTRL_B |
| .byte 0x34 @ FUNC_MUX_CTRL_C |
| .byte 0x38 @ FUNC_MUX_CTRL_D |
| .byte 0x40 @ PULL_DWN_CTRL_0 |
| .byte 0x44 @ PULL_DWN_CTRL_1 |
| .byte 0x48 @ PULL_DWN_CTRL_2 |
| .byte 0x4c @ PULL_DWN_CTRL_3 |
| .byte 0x50 @ GATE_INH_CTRL_0 |
| .byte 0x60 @ VOLTAGE_CTRL_0 |
| .byte 0x70 @ TEST_DBG_CTRL_0 |
| .byte 0x80 @ MOD_CONF_CTRL_0 |
| .byte 0x0c @ COMP_MODE_CTRL_0 |
| .byte 0xff |
| |
| .globl lowlevel_init |
| lowlevel_init: |
| /* Improve performance a bit... */ |
| mrc p15, 0, r1, c0, c0, 0 @ read C15 ID register |
| mrc p15, 0, r1, c0, c0, 1 @ read C15 Cache information register |
| mrc p15, 0, r1, c1, c0, 0 @ read C15 Control register |
| orr r1, r1, #0x1000 @ enable I-cache, map interrupt vector 0xffff0000 |
| mcr p15, 0, r1, c1, c0, 0 @ write C15 Control register |
| mov r1, #0x00 |
| mcr p15, 0, r1, c7, c5, 0 @ Flush I-cache |
| nop |
| nop |
| nop |
| nop |
| |
| /* Setup clocking mode */ |
| ldr r0, OMAP5910_MPU_CLKM_BASE @ base of CLOCK unit |
| ldrh r1, [r0, #0x18] @ ARM_SYST - get reset status |
| bic r1, r1, #(7 << 11) @ clear clock select |
| orr r1, r1, #(2 << 11) @ set synchronous scalable |
| mov r2, #0 |
| loop: |
| cmp r2, #1 @ this loop will wait for at least 100 cycles |
| streqh r1, [r0, #0x18] @ before issuing next request from MPU |
| add r2, r2, #1 @ on the 1st run code is loaded into I-cache |
| cmp r2, #16 @ and second run will set clocking mode |
| bne loop |
| nop |
| |
| /* Setup clock dividers */ |
| ldr r1, _OMAP5910_ARM_CKCTL |
| orr r1, r1, #0x2000 @ enable DSP clock |
| strh r1, [r0] @ setup clock divisors |
| |
| /* Setup DPLL to generate requested freq */ |
| ldr r0, OMAP5910_DPLL1_BASE @ base of DPLL1 register |
| mov r1, #0x0010 @ set PLL_ENABLE |
| orr r1, r1, #0x2000 @ set IOB to new locking |
| orr r1, r1, #(OMAP5910_DPLL_MUL << 7) @ setup multiplier CLKREF |
| orr r1, r1, #(OMAP5910_DPLL_DIV << 5) @ setup divider CLKREF |
| strh r1, [r0] @ write |
| |
| locking: |
| ldrh r1, [r0] @ get DPLL value |
| tst r1, #0x01 |
| beq locking @ while LOCK not set |
| |
| /* Enable clock */ |
| ldr r0, OMAP5910_MPU_CLKM_BASE @ base of CLOCK unit |
| mov r1, #(1 << 10) @ disable idle mode do not check |
| @ nWAKEUP pin, other remain active |
| strh r1, [r0, #0x04] |
| ldr r1, _OMAP5910_ARM_EN_CLK |
| strh r1, [r0, #0x08] |
| mov r1, #0x003f @ FLASH.RP not enabled in idle and |
| strh r1, [r0, #0x0c] @ max delayed ( 32 x CLKIN ) |
| |
| /* Configure 5910 pins functions to match our board. */ |
| ldr r0, MUX_CONFIG_BASE |
| adr r1, MUX_CONFIG_VALUES |
| adr r2, MUX_CONFIG_OFFSETS |
| next_mux_cfg: |
| ldrb r3, [r2], #1 |
| ldr r4, [r1], #4 |
| cmp r3, #0xff |
| strne r4, [r0, r3] |
| bne next_mux_cfg |
| |
| /* Configure GPIO pins (also disables Green LED) */ |
| ldr r0, OMAP5910_GPIO_BASE |
| ldr r1, GPIO_OUTPUT |
| strh r1, [r0, #0x04] |
| ldr r1, GPIO_DIRECTION |
| strh r1, [r0, #0x08] |
| |
| /* EnablePeripherals */ |
| ldr r0, OMAP5910_MPU_CLKM_BASE @ CLOCK unit |
| mov r1, #0x0001 @ Peripheral enable |
| strh r1, [r0, #0x14] |
| |
| /* Program LED Pulse Generator */ |
| ldr r0, OMAP5910_LPG1_BASE @ 1st LED Pulse Generator |
| mov r1, #0x7F @ Set obscure frequency in |
| strb r1, [r0, #0x00] @ LCR |
| mov r1, #0x01 @ Enable clock (CLK_EN) in |
| strb r1, [r0, #0x04] @ PMR |
| |
| /* TIPB Lock UART1 */ |
| ldr r0, OMAP5910_TIPB_SWITCHES_BASE @ prepare base of TIPB switches |
| mov r1, #1 @ ARM allocated |
| strh r1, [r0,#0x04] @ clear IRQ line and status bits |
| strh r1, [r0,#0x00] |
| ldrh r1, [r0,#0x04] |
| |
| /* Disable watchdog */ |
| ldr r0, OMAP5910_MPU_WD_TIMER_BASE |
| mov r1, #0xf5 |
| strh r1, [r0, #0x8] |
| mov r1, #0xa0 |
| strh r1, [r0, #0x8] |
| |
| /* Enable MCLK */ |
| ldr r0, OMAP5910_ULPD_PWR_MNG_BASE |
| mov r1, #0x6 |
| strh r1, [r0, #0x34] |
| strh r1, [r0, #0x34] |
| |
| /* Setup clock divisors */ |
| ldr r0, OMAP5910_ULPD_PWR_MNG_BASE @ base of ULDPL DPLL1 register |
| |
| mov r1, #0x0010 @ set PLL_ENABLE |
| orr r1, r1, #0x2000 @ set IOB to new locking |
| strh r1, [r0] @ write |
| |
| ulocking: |
| ldrh r1, [r0] @ get DPLL value |
| tst r1, #1 |
| beq ulocking @ while LOCK not set |
| |
| /* EMIF init */ |
| ldr r0, OMAP5910_MPU_TC_BASE |
| ldrh r1, [r0, #0x0c] @ EMIFS_CONFIG_REG |
| bic r1, r1, #0x0c @ pwr down disabled, flash WP |
| orr r1, r1, #0x01 |
| str r1, [r0, #0x0c] |
| |
| ldr r1, VAL_EMIFS_CS0_CONFIG |
| str r1, [r0, #0x10] @ EMIFS_CS0_CONFIG |
| ldr r1, VAL_EMIFS_CS1_CONFIG |
| str r1, [r0, #0x14] @ EMIFS_CS1_CONFIG |
| ldr r1, VAL_EMIFS_CS2_CONFIG |
| str r1, [r0, #0x18] @ EMIFS_CS2_CONFIG |
| ldr r1, VAL_EMIFS_CS3_CONFIG |
| str r1, [r0, #0x1c] @ EMIFS_CS3_CONFIG |
| ldr r1, VAL_EMIFS_DYN_WAIT |
| str r1, [r0, #0x40] @ EMIFS_CFG_DYN_WAIT |
| |
| /* Setup SDRAM */ |
| ldr r1, VAL_EMIFF_SDRAM_CONFIG |
| str r1, [r0, #0x20] @ EMIFF_SDRAM_CONFIG |
| ldr r1, VAL_EMIFF_SDRAM_CONFIG2 |
| str r1, [r0, #0x3c] @ EMIFF_SDRAM_CONFIG2 |
| ldr r1, VAL_EMIFF_MRS |
| str r1, [r0, #0x24] @ EMIFF_MRS |
| /* SDRAM needs 100us to stabilize */ |
| mov r0, #0x4000 |
| sdelay: |
| subs r0, r0, #0x1 |
| bne sdelay |
| |
| /* back to arch calling code */ |
| mov pc, lr |
| .end |