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| author | Kumar Gala <galak@kernel.crashing.org> | 2008-02-27 21:51:50 -0600 |
|---|---|---|
| committer | Marian Balakowicz <m8@semihalf.com> | 2008-02-29 13:15:56 +0100 |
| commit | d3f2fa0d278467b2232e4eb2372f905c3febfbeb (patch) | |
| tree | 354a389881ddaacfc29a0b02c6fb12b9cb7c1f81 /common | |
| parent | e822d7fc4dd4755d4d0a22f05e33f33d1a0481da (diff) | |
| download | u-boot-imx-d3f2fa0d278467b2232e4eb2372f905c3febfbeb.zip u-boot-imx-d3f2fa0d278467b2232e4eb2372f905c3febfbeb.tar.gz u-boot-imx-d3f2fa0d278467b2232e4eb2372f905c3febfbeb.tar.bz2 | |
[new uImage] Provide ability to restrict region used for boot images
Allow the user to set 'bootm_low' and 'bootm_size' env vars as a way
to restrict what memory range is used for bootm.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Marian Balakowicz <m8@semihalf.com>
Diffstat (limited to 'common')
| -rw-r--r-- | common/cmd_bootm.c | 10 | ||||
| -rw-r--r-- | common/image.c | 26 |
2 files changed, 31 insertions, 5 deletions
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c index a32a5a2..8595ef6 100644 --- a/common/cmd_bootm.c +++ b/common/cmd_bootm.c @@ -124,6 +124,7 @@ int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) ulong os_data, os_len; ulong image_start, image_end; ulong load_start, load_end; + ulong mem_start, mem_size; struct lmb lmb; @@ -134,11 +135,10 @@ int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) lmb_init(&lmb); -#ifdef CFG_SDRAM_BASE - lmb_add(&lmb, CFG_SDRAM_BASE, gd->bd->bi_memsize); -#else - lmb_add(&lmb, 0, gd->bd->bi_memsize); -#endif + mem_start = getenv_bootm_low(); + mem_size = getenv_bootm_size(); + + lmb_add(&lmb, mem_start, mem_size); board_lmb_reserve(&lmb); diff --git a/common/image.c b/common/image.c index 0b71811..9e446fa 100644 --- a/common/image.c +++ b/common/image.c @@ -132,6 +132,32 @@ int getenv_autostart (void) return (s && (*s == 'n')) ? 0 : 1; } +ulong getenv_bootm_low(void) +{ + char *s = getenv ("bootm_low"); + if (s) { + ulong tmp = simple_strtoul (s, NULL, 16); + return tmp; + } + +#ifdef CFG_SDRAM_BASE + return CFG_SDRAM_BASE; +#else + return 0; +#endif +} + +ulong getenv_bootm_size(void) +{ + char *s = getenv ("bootm_size"); + if (s) { + ulong tmp = simple_strtoul (s, NULL, 16); + return tmp; + } + + return gd->bd->bi_memsize; +} + void memmove_wd (void *to, void *from, size_t len, ulong chunksz) { #if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) |