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| author | Haiying Wang <Haiying.Wang@freescale.com> | 2010-09-29 13:31:35 -0400 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2010-10-07 09:49:47 -0500 |
| commit | 3aed55074211b4e886d97f16773f186a019d508d (patch) | |
| tree | d2190f2ebb454371f411328097a44ddb0ddb58e2 /board/freescale | |
| parent | 1b8e4fa1a093c818b53c8b6d959bcfde41fbe065 (diff) | |
| download | u-boot-imx-3aed55074211b4e886d97f16773f186a019d508d.zip u-boot-imx-3aed55074211b4e886d97f16773f186a019d508d.tar.gz u-boot-imx-3aed55074211b4e886d97f16773f186a019d508d.tar.bz2 | |
mpc8569mds: fix consuming long time while relocating code.
The original code maps boot flash as non-cacheable region. When calling
relocate_code in flash to copy u-boot from flash to ddr, every loop copy command
is read from flash. The flash read speed will be the bottleneck, which consuming
long time to do this operation. To resovle this, map the boot flash as
write-through cache via tlb. And set tlb to remap the flash after code
executing in ddr, to confirm flash erase operation properly done.
Signed-off-by: Kai.Jiang <Kai.Jiang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'board/freescale')
| -rw-r--r-- | board/freescale/mpc8569mds/mpc8569mds.c | 26 | ||||
| -rw-r--r-- | board/freescale/mpc8569mds/tlb.c | 15 |
2 files changed, 36 insertions, 5 deletions
diff --git a/board/freescale/mpc8569mds/mpc8569mds.c b/board/freescale/mpc8569mds/mpc8569mds.c index 01b7dcb..795e565 100644 --- a/board/freescale/mpc8569mds/mpc8569mds.c +++ b/board/freescale/mpc8569mds/mpc8569mds.c @@ -27,6 +27,7 @@ #include <pci.h> #include <asm/processor.h> #include <asm/mmu.h> +#include <asm/cache.h> #include <asm/immap_85xx.h> #include <asm/fsl_pci.h> #include <asm/fsl_ddr_sdram.h> @@ -211,6 +212,31 @@ int board_early_init_f (void) return 0; } +int board_early_init_r(void) +{ + const unsigned int flashbase = CONFIG_SYS_NAND_BASE; + const u8 flash_esel = 0; + + /* + * Remap Boot flash to caching-inhibited + * so that flash can be erased properly. + */ + + /* Flush d-cache and invalidate i-cache of any FLASH data */ + flush_dcache(); + invalidate_icache(); + + /* invalidate existing TLB entry for flash */ + disable_tlb(flash_esel); + + set_tlb(1, flashbase, CONFIG_SYS_NAND_BASE, /* tlb, epn, rpn */ + MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G, /* perms, wimge */ + 0, flash_esel, /* ts, esel */ + BOOKE_PAGESZ_64M, 1); /* tsize, iprot */ + + return 0; +} + int checkboard (void) { printf ("Board: 8569 MDS\n"); diff --git a/board/freescale/mpc8569mds/tlb.c b/board/freescale/mpc8569mds/tlb.c index 73dcc3e..f852fc3 100644 --- a/board/freescale/mpc8569mds/tlb.c +++ b/board/freescale/mpc8569mds/tlb.c @@ -1,5 +1,5 @@ /* - * Copyright 2009 Freescale Semiconductor, Inc. + * Copyright 2009-2010 Freescale Semiconductor, Inc. * * (C) Copyright 2000 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. @@ -46,15 +46,20 @@ struct fsl_e_tlb_entry tlb_table[] = { /* TLB 1 Initializations */ /* - * TLBe 0: 64M Non-cacheable, guarded + * TLBe 0: 64M write-through, guarded * Out of reset this entry is only 4K. - * 0xfc000000 256K NAND FLASH (CS3) - * 0xfe000000 32M NOR FLASH (CS0) + * 0xfc000000 32MB NAND FLASH (CS3) + * 0xfe000000 32MB NOR FLASH (CS0) */ +#ifdef CONFIG_NAND_SPL SET_TLB_ENTRY(1, CONFIG_SYS_NAND_BASE, CONFIG_SYS_NAND_BASE, MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G, + 0, 0, BOOKE_PAGESZ_1M, 1), +#else + SET_TLB_ENTRY(1, CONFIG_SYS_NAND_BASE, CONFIG_SYS_NAND_BASE, + MAS3_SX|MAS3_SW|MAS3_SR, MAS2_W|MAS2_G, 0, 0, BOOKE_PAGESZ_64M, 1), - +#endif /* * TLBe 1: 256KB Non-cacheable, guarded * 0xf8000000 32K BCSR |