[U-Boot] [PATCH 1/5] powerpc/85xx: Use DDR for RAMBOOT instead of L2 SRAM on p1_p2_rdb

[Kumar Gala]

From: Priyanka Jain <Priyanka.Jain at freescale.com>

Using DDR as RAMBOOT base instead of L2SRAM for SDCard and SPI Flash
boot loaders because:
- P1_P2_RDB boards have soldered DDR so no need for SPD
- Also P102x has 256K L2 cache size so becomes a limiting factor for
  size of image that could be loaded in SRAM mode and would require three
  stage boot loader (TPL).

Changes done:
 1. CONFIG_SYS_TEXT_BASE to 0x11000000
 2. CONFIG_RESET_VECTOR_ADDRESS to 0x1107fffc

Signed-off-by: Priyanka Jain <Priyanka.Jain at freescale.com>
Signed-off-by: Poonam Aggrwal <Poonam.Aggrwal at freescale.com>
Signed-off-by: Dipen Dudhat <Dipen.Dudhat at freescale.com>
Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
---
 board/freescale/p1_p2_rdb/ddr.c |   15 +++++++++++----
 board/freescale/p1_p2_rdb/tlb.c |   13 ++++---------
 include/configs/P1_P2_RDB.h     |    8 ++++----
 3 files changed, 19 insertions(+), 17 deletions(-)

diff --git a/board/freescale/p1_p2_rdb/ddr.c b/board/freescale/p1_p2_rdb/ddr.c
index 44faec3..853044e 100644
--- a/board/freescale/p1_p2_rdb/ddr.c
+++ b/board/freescale/p1_p2_rdb/ddr.c
@@ -202,6 +202,17 @@ phys_size_t fixed_sdram (void)
 	struct cpu_type *cpu;
 	ulong ddr_freq, ddr_freq_mhz;
 
+	cpu = gd->cpu;
+	/* P1020 and it's derivatives support max 32bit DDR width */
+	if (cpu->soc_ver == SVR_P1020 || cpu->soc_ver == SVR_P1020_E ||
+		cpu->soc_ver == SVR_P1011 || cpu->soc_ver == SVR_P1011_E) {
+		ddr_size = (CONFIG_SYS_SDRAM_SIZE * 1024 * 1024 / 2);
+	} else {
+		ddr_size = CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
+	}
+#if defined(CONFIG_SYS_RAMBOOT)
+	return ddr_size;
+#endif
 	ddr_freq = get_ddr_freq(0);
 	ddr_freq_mhz = ddr_freq / 1000000;
 
@@ -220,16 +231,12 @@ phys_size_t fixed_sdram (void)
 		panic("Unsupported DDR data rate %s MT/s data rate\n",
 					strmhz(buf, ddr_freq));
 
-	cpu = gd->cpu;
 	/* P1020 and it's derivatives support max 32bit DDR width */
 	if(cpu->soc_ver == SVR_P1020 || cpu->soc_ver == SVR_P1020_E ||
 		cpu->soc_ver == SVR_P1011 || cpu->soc_ver == SVR_P1011_E) {
 		ddr_cfg_regs.ddr_sdram_cfg |= SDRAM_CFG_32_BE;
 		ddr_cfg_regs.cs[0].bnds = 0x0000001F;
-		ddr_size = (CONFIG_SYS_SDRAM_SIZE * 1024 * 1024 / 2);
 	}
-	else
-		ddr_size = CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
 
 	fsl_ddr_set_memctl_regs(&ddr_cfg_regs, 0);
 
diff --git a/board/freescale/p1_p2_rdb/tlb.c b/board/freescale/p1_p2_rdb/tlb.c
index b85c268..e54defb 100644
--- a/board/freescale/p1_p2_rdb/tlb.c
+++ b/board/freescale/p1_p2_rdb/tlb.c
@@ -80,15 +80,10 @@ struct fsl_e_tlb_entry tlb_table[] = {
 			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 			0, 6, BOOKE_PAGESZ_1M, 1),
 
-#if defined(CONFIG_SYS_RAMBOOT) && defined(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_I|MAS2_G,
-			0, 7, 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, 8, BOOKE_PAGESZ_256K, 1),
+#if defined(CONFIG_SYS_RAMBOOT)
+	SET_TLB_ENTRY(1, CONFIG_SYS_DDR_SDRAM_BASE, CONFIG_SYS_DDR_SDRAM_BASE,
+			MAS3_SX|MAS3_SW|MAS3_SR, 0,
+			0, 7, BOOKE_PAGESZ_1G, 1)
 #endif
 };
 
diff --git a/include/configs/P1_P2_RDB.h b/include/configs/P1_P2_RDB.h
index 651dc76..23b8afa 100644
--- a/include/configs/P1_P2_RDB.h
+++ b/include/configs/P1_P2_RDB.h
@@ -57,14 +57,14 @@
 
 #ifdef CONFIG_SDCARD
 #define CONFIG_RAMBOOT_SDCARD		1
-#define CONFIG_SYS_TEXT_BASE		0xf8f80000
-#define CONFIG_RESET_VECTOR_ADDRESS	0xf8fffffc
+#define CONFIG_SYS_TEXT_BASE		0x11000000
+#define CONFIG_RESET_VECTOR_ADDRESS	0x1107fffc
 #endif
 
 #ifdef CONFIG_SPIFLASH
 #define CONFIG_RAMBOOT_SPIFLASH		1
-#define CONFIG_SYS_TEXT_BASE		0xf8f80000
-#define CONFIG_RESET_VECTOR_ADDRESS	0xf8fffffc
+#define CONFIG_SYS_TEXT_BASE		0x11000000
+#define CONFIG_RESET_VECTOR_ADDRESS	0x1107fffc
 #endif
 
 #ifndef CONFIG_SYS_TEXT_BASE
-- 
1.7.2.3