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| author | wdenk <wdenk> | 2003-05-23 23:18:21 +0000 |
|---|---|---|
| committer | wdenk <wdenk> | 2003-05-23 23:18:21 +0000 |
| commit | 38b99261c13a54ea955a8fe9176e73256486362f (patch) | |
| tree | f8ca312752f893652044b9ce05780d253750a27c /common | |
| parent | 4c3b21a5f915988e3d9681cf9cb566bb7bd56859 (diff) | |
| download | u-boot-38b99261c13a54ea955a8fe9176e73256486362f.tar.gz u-boot-38b99261c13a54ea955a8fe9176e73256486362f.tar.xz u-boot-38b99261c13a54ea955a8fe9176e73256486362f.zip | |
Add zero-copy ramdisk support (requires corresponding kernel support!)
Diffstat (limited to 'common')
| -rw-r--r-- | common/cmd_bootm.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c index fa32d467ed..af62becf4a 100644 --- a/common/cmd_bootm.c +++ b/common/cmd_bootm.c @@ -374,6 +374,7 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag, ulong cmd_start, cmd_end; ulong initrd_high; ulong data; + int initrd_copy_to_ram = 1; char *cmdline; char *s; bd_t *kbd; @@ -385,6 +386,8 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag, * turning the "load high" feature off. This is intentional. */ initrd_high = simple_strtoul(s, NULL, 16); + if (initrd_high == ~0) + initrd_copy_to_ram = 0; } else { /* not set, no restrictions to load high */ initrd_high = ~0; } @@ -567,6 +570,10 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag, } if (data) { + if (!initrd_copy_to_ram) { /* zero-copy ramdisk support */ + initrd_start = data; + initrd_end = initrd_start + len; + } else { initrd_start = (ulong)kbd - len; initrd_start &= ~(4096 - 1); /* align on page */ @@ -621,6 +628,7 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag, memmove ((void *)initrd_start, (void *)data, len); #endif /* CONFIG_HW_WATCHDOG || CONFIG_WATCHDOG */ printf ("OK\n"); + } } else { initrd_start = 0; initrd_end = 0; |