powerpc: p1_p2_rdb_pc: Enable p1_p2_rdb_pc to boot from SD Card with SPL

Enable p1_p2_rdb_pc to start from eSDHC with SPL.

Signed-off-by: Ying Zhang <b40530@freescale.com>

3 files changed, 110 insertions, 12 deletions

diff --git a/board/freescale/p1_p2_rdb_pc/Makefile b/board/freescale/p1_p2_rdb_pc/Makefile
index f8d0b35..202b4a5 100644
--- a/board/freescale/p1_p2_rdb_pc/Makefile
+++ b/board/freescale/p1_p2_rdb_pc/Makefile
@@ -21,6 +21,9 @@ ifdef MINIMAL
 COBJS-y	+= spl_minimal.o tlb.o law.o
 
 else
+ifdef CONFIG_SPL_BUILD
+COBJS-y += spl.o
+endif
 
 COBJS-y        += $(BOARD).o
 COBJS-y        += ddr.o
diff --git a/board/freescale/p1_p2_rdb_pc/spl.c b/board/freescale/p1_p2_rdb_pc/spl.c
new file mode 100644
index 0000000..5b8e0ff
--- /dev/null
+++ b/board/freescale/p1_p2_rdb_pc/spl.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <ns16550.h>
+#include <malloc.h>
+#include <mmc.h>
+#include <nand.h>
+#include <i2c.h>
+#include <fsl_esdhc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const u32 sysclk_tbl[] = {
+	66666000, 7499900, 83332500, 8999900,
+	99999000, 11111000, 12499800, 13333200
+};
+
+ulong get_effective_memsize(void)
+{
+	return CONFIG_SYS_L2_SIZE;
+}
+
+void board_init_f(ulong bootflag)
+{
+	u32 plat_ratio, bus_clk;
+	ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+
+	console_init_f();
+
+	/* Set pmuxcr to allow both i2c1 and i2c2 */
+	setbits_be32(&gur->pmuxcr, in_be32(&gur->pmuxcr) | 0x1000);
+	setbits_be32(&gur->pmuxcr,
+		     in_be32(&gur->pmuxcr) | MPC85xx_PMUXCR_SD_DATA);
+
+	/* Read back the register to synchronize the write. */
+	in_be32(&gur->pmuxcr);
+
+	/* initialize selected port with appropriate baud rate */
+	plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
+	plat_ratio >>= 1;
+	bus_clk = CONFIG_SYS_CLK_FREQ * plat_ratio;
+	gd->bus_clk = bus_clk;
+
+	NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
+		     bus_clk / 16 / CONFIG_BAUDRATE);
+#ifdef CONFIG_SPL_MMC_BOOT
+	puts("\nSD boot...\n");
+#endif
+
+	/* copy code to RAM and jump to it - this should not return */
+	/* NOTE - code has to be copied out of NAND buffer before
+	 * other blocks can be read.
+	 */
+	relocate_code(CONFIG_SPL_RELOC_STACK, 0, CONFIG_SPL_RELOC_TEXT_BASE);
+}
+
+void board_init_r(gd_t *gd, ulong dest_addr)
+{
+	/* Pointer is writable since we allocated a register for it */
+	gd = (gd_t *)CONFIG_SPL_GD_ADDR;
+	bd_t *bd;
+
+	memset(gd, 0, sizeof(gd_t));
+	bd = (bd_t *)(CONFIG_SPL_GD_ADDR + sizeof(gd_t));
+	memset(bd, 0, sizeof(bd_t));
+	gd->bd = bd;
+	bd->bi_memstart = CONFIG_SYS_INIT_L2_ADDR;
+	bd->bi_memsize = CONFIG_SYS_L2_SIZE;
+
+	probecpu();
+	get_clocks();
+	mem_malloc_init(CONFIG_SPL_RELOC_MALLOC_ADDR,
+			CONFIG_SPL_RELOC_MALLOC_SIZE);
+
+	env_init();
+#ifdef CONFIG_SPL_MMC_BOOT
+	mmc_initialize(bd);
+#endif
+	/* relocate environment function pointers etc. */
+	env_relocate();
+
+#ifdef CONFIG_SYS_I2C
+	i2c_init_all();
+#else
+	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+#endif
+
+	gd->ram_size = initdram(0);
+	puts("Second program loader running in sram...\n");
+
+#ifdef CONFIG_SPL_MMC_BOOT
+	mmc_boot();
+#endif
+}
diff --git a/board/freescale/p1_p2_rdb_pc/tlb.c b/board/freescale/p1_p2_rdb_pc/tlb.c
index d4561c7..d6afa7b 100644
--- a/board/freescale/p1_p2_rdb_pc/tlb.c
+++ b/board/freescale/p1_p2_rdb_pc/tlb.c
@@ -78,17 +78,8 @@ struct fsl_e_tlb_entry tlb_table[] = {
 			0, 7, BOOKE_PAGESZ_1M, 1),
 #endif
 
-#if defined(CONFIG_SYS_RAMBOOT) || defined(CONFIG_SPL)
-#ifdef CONFIG_SYS_INIT_L2_ADDR
-	/* L2SRAM */
-	SET_TLB_ENTRY(1, CONFIG_SYS_INIT_L2_ADDR, CONFIG_SYS_INIT_L2_ADDR_PHYS,
-		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
-		      0, 8, BOOKE_PAGESZ_256K, 1),
-	SET_TLB_ENTRY(1, CONFIG_SYS_INIT_L2_ADDR + 0x40000,
-		      CONFIG_SYS_INIT_L2_ADDR_PHYS + 0x40000,
-		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
-		      0, 12, BOOKE_PAGESZ_256K, 1),
-#else
+#if defined(CONFIG_SYS_RAMBOOT) || \
+	(defined(CONFIG_SPL) && !defined(CONFIG_SPL_COMMON_INIT_DDR))
 	/* *I*G - eSDHC/eSPI/NAND boot */
 	SET_TLB_ENTRY(1, CONFIG_SYS_DDR_SDRAM_BASE, CONFIG_SYS_DDR_SDRAM_BASE,
 			MAS3_SX|MAS3_SW|MAS3_SR, 0,
@@ -101,8 +92,14 @@ struct fsl_e_tlb_entry tlb_table[] = {
 			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 			0, 9, BOOKE_PAGESZ_1G, 1),
 #endif /* P1020MBG */
-#endif /* not L2 SRAM */
 #endif /* RAMBOOT/SPL */
+
+#ifdef CONFIG_SYS_INIT_L2_ADDR
+	/* *I*G - L2SRAM */
+	SET_TLB_ENTRY(1, CONFIG_SYS_INIT_L2_ADDR, CONFIG_SYS_INIT_L2_ADDR_PHYS,
+		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_G,
+		      0, 11, BOOKE_PAGESZ_256K, 1)
+#endif
 };
 
 int num_tlb_entries = ARRAY_SIZE(tlb_table);