board/b4qds:Add support of 2 stage NAND boot-loader
Add support of 2 stage NAND boot loader using SPL framework.
here, PBL initialise the internal SRAM and copy SPL(160KB). This further
initialise DDR using SPD and environment and copy u-boot(768 KB) from NAND to DDR.
Finally SPL transer control to u-boot.
Initialise/create followings required for SPL framework
- Add spl.c which defines board_init_f, board_init_r
- update tlb and ddr accordingly
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/board/freescale/b4860qds/spl.c b/board/freescale/b4860qds/spl.c
new file mode 100644
index 0000000..3aa5a78
--- /dev/null
+++ b/board/freescale/b4860qds/spl.c
@@ -0,0 +1,114 @@
+/* Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/spl.h>
+#include <malloc.h>
+#include <ns16550.h>
+#include <nand.h>
+#include <i2c.h>
+#include "../common/qixis.h"
+#include "b4860qds_qixis.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+phys_size_t get_effective_memsize(void)
+{
+ return CONFIG_SYS_L3_SIZE;
+}
+
+unsigned long get_board_sys_clk(void)
+{
+ u8 sysclk_conf = QIXIS_READ(brdcfg[1]);
+
+ switch ((sysclk_conf & 0x0C) >> 2) {
+ case QIXIS_CLK_100:
+ return 100000000;
+ case QIXIS_CLK_125:
+ return 125000000;
+ case QIXIS_CLK_133:
+ return 133333333;
+ }
+ return 66666666;
+}
+
+unsigned long get_board_ddr_clk(void)
+{
+ u8 ddrclk_conf = QIXIS_READ(brdcfg[1]);
+
+ switch (ddrclk_conf & 0x03) {
+ case QIXIS_CLK_100:
+ return 100000000;
+ case QIXIS_CLK_125:
+ return 125000000;
+ case QIXIS_CLK_133:
+ return 133333333;
+ }
+ return 66666666;
+}
+
+void board_init_f(ulong bootflag)
+{
+ u32 plat_ratio, sys_clk, uart_clk;
+ ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+
+ /* Memcpy existing GD at CONFIG_SPL_GD_ADDR */
+ memcpy((void *)CONFIG_SPL_GD_ADDR, (void *)gd, sizeof(gd_t));
+
+ /* Update GD pointer */
+ gd = (gd_t *)(CONFIG_SPL_GD_ADDR);
+
+ /* compiler optimization barrier needed for GCC >= 3.4 */
+ __asm__ __volatile__("" : : : "memory");
+
+ console_init_f();
+
+ /* initialize selected port with appropriate baud rate */
+ sys_clk = get_board_sys_clk();
+ plat_ratio = (in_be32(&gur->rcwsr[0]) >> 25) & 0x1f;
+ uart_clk = sys_clk * plat_ratio / 2;
+
+ NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
+ uart_clk / 16 / CONFIG_BAUDRATE);
+
+ relocate_code(CONFIG_SPL_RELOC_STACK, (gd_t *)CONFIG_SPL_GD_ADDR, 0x0);
+}
+
+void board_init_r(gd_t *gd, ulong dest_addr)
+{
+ bd_t *bd;
+
+ bd = (bd_t *)(gd + sizeof(gd_t));
+ memset(bd, 0, sizeof(bd_t));
+ gd->bd = bd;
+ bd->bi_memstart = CONFIG_SYS_INIT_L3_ADDR;
+ bd->bi_memsize = CONFIG_SYS_L3_SIZE;
+
+ probecpu();
+ get_clocks();
+ mem_malloc_init(CONFIG_SPL_RELOC_MALLOC_ADDR,
+ CONFIG_SPL_RELOC_MALLOC_SIZE);
+
+#ifndef CONFIG_SPL_NAND_BOOT
+ env_init();
+ env_relocate();
+#else
+ /* relocate environment function pointers etc. */
+ nand_spl_load_image(CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE,
+ (uchar *)CONFIG_ENV_ADDR);
+ gd->env_addr = (ulong)(CONFIG_ENV_ADDR);
+ gd->env_valid = 1;
+#endif
+
+ i2c_init_all();
+
+ puts("\n\n");
+
+ gd->ram_size = initdram(0);
+
+#ifdef CONFIG_SPL_NAND_BOOT
+ nand_boot();
+#endif
+}