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authorScott Wood <scottwood@freescale.com>2012-10-12 18:02:24 -0500
committerScott Wood <scottwood@freescale.com>2012-11-26 15:41:27 -0600
commit13d1143ffb4dc0c71478534b6b52402e95be9420 (patch)
tree0fb8cac0505d385547eb44f4c4afc35165ac7e62 /board/freescale
parentd674bccf738396ecdc4374f5b5cb3e7fd376a0ab (diff)
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powerpc/mpc85xx/p2020rdb-pca: Use L2 SRAM for SPL boot
This allows DDR configuration to be deferred to the final U-Boot image, which is able to make use of SPD data. The SPL itself cannot use SPD due to code size constraints. It previously used fixed register values for DDR configuration, and those values did not work on the p2020rdb-pca board I tested with. It's possible that different revisions of the board require different settings. Using SPD eliminates that problem. Signed-off-by: Scott Wood <scottwood@freescale.com> Cc: Andy Fleming <afleming@freescale.com>
Diffstat (limited to 'board/freescale')
-rw-r--r--board/freescale/p1_p2_rdb_pc/ddr.c2
-rw-r--r--board/freescale/p1_p2_rdb_pc/spl_minimal.c7
-rw-r--r--board/freescale/p1_p2_rdb_pc/tlb.c15
3 files changed, 21 insertions, 3 deletions
diff --git a/board/freescale/p1_p2_rdb_pc/ddr.c b/board/freescale/p1_p2_rdb_pc/ddr.c
index 88ba56f..9355536 100644
--- a/board/freescale/p1_p2_rdb_pc/ddr.c
+++ b/board/freescale/p1_p2_rdb_pc/ddr.c
@@ -206,6 +206,7 @@ int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
}
#endif /* CONFIG_SYS_DDR_RAW_TIMING */
+#ifdef CONFIG_SYS_DDR_CS0_BNDS
/* Fixed sdram init -- doesn't use serial presence detect. */
phys_size_t fixed_sdram(void)
{
@@ -260,6 +261,7 @@ phys_size_t fixed_sdram(void)
return ddr_size;
}
+#endif
void fsl_ddr_board_options(memctl_options_t *popts,
dimm_params_t *pdimm,
diff --git a/board/freescale/p1_p2_rdb_pc/spl_minimal.c b/board/freescale/p1_p2_rdb_pc/spl_minimal.c
index 5c893ee..d48fb01 100644
--- a/board/freescale/p1_p2_rdb_pc/spl_minimal.c
+++ b/board/freescale/p1_p2_rdb_pc/spl_minimal.c
@@ -23,16 +23,18 @@
#include <ns16550.h>
#include <asm/io.h>
#include <nand.h>
+#include <linux/compiler.h>
#include <asm/fsl_law.h>
#include <asm/fsl_ddr_sdram.h>
#include <asm/global_data.h>
DECLARE_GLOBAL_DATA_PTR;
+#ifndef CONFIG_SYS_INIT_L2_ADDR
/*
* Fixed sdram init -- doesn't use serial presence detect.
*/
-void sdram_init(void)
+static void sdram_init(void)
{
ccsr_ddr_t *ddr = (ccsr_ddr_t *)CONFIG_SYS_MPC85xx_DDR_ADDR;
@@ -71,6 +73,7 @@ void sdram_init(void)
set_next_law(0, CONFIG_SYS_SDRAM_SIZE_LAW, LAW_TRGT_IF_DDR_1);
}
+#endif
void board_init_f(ulong bootflag)
{
@@ -101,8 +104,10 @@ void board_init_f(ulong bootflag)
__raw_writel(0x00000000, &pgpio->gpdir);
#endif
+#ifndef CONFIG_SYS_INIT_L2_ADDR
/* Initialize the DDR3 */
sdram_init();
+#endif
/* copy code to RAM and jump to it - this should not return */
/* NOTE - code has to be copied out of NAND buffer before
diff --git a/board/freescale/p1_p2_rdb_pc/tlb.c b/board/freescale/p1_p2_rdb_pc/tlb.c
index 0873dd7..3e4dffd 100644
--- a/board/freescale/p1_p2_rdb_pc/tlb.c
+++ b/board/freescale/p1_p2_rdb_pc/tlb.c
@@ -95,6 +95,16 @@ struct fsl_e_tlb_entry tlb_table[] = {
#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
/* *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,
@@ -106,8 +116,9 @@ struct fsl_e_tlb_entry tlb_table[] = {
CONFIG_SYS_DDR_SDRAM_BASE + 0x40000000,
MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
0, 9, BOOKE_PAGESZ_1G, 1),
-#endif
-#endif
+#endif /* P1020MBG */
+#endif /* not L2 SRAM */
+#endif /* RAMBOOT/SPL */
};
int num_tlb_entries = ARRAY_SIZE(tlb_table);