brain-hackers_pepepper-mirror/u-boot-brain
1
0
Fork 0
mirror of https://github.com/brain-hackers/u-boot-brain synced 2024-09-28 23:50:26 +09:00
Code Issues Projects Releases Wiki Activity

powerpc/85xx: Use DDR for RAMBOOT instead of L2 SRAM on p1_p2_rdb

Browse Source 
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@freescale.com>
Signed-off-by: Poonam Aggrwal <Poonam.Aggrwal@freescale.com>
Signed-off-by: Dipen Dudhat <Dipen.Dudhat@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Priyanka Jain 2011-02-08 13:13:15 +05:30 committed by Kumar Gala
parent f098c9c880
commit 0c871e952e
3 changed files with 19 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
board/freescale/p1_p2_rdb/ddr.c
View File

@ -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);

13
board/freescale/p1_p2_rdb/tlb.c
View File

@ -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
};

8
include/configs/P1_P2_RDB.h
View File

@ -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