diff options
Diffstat (limited to 'usr/src/grub/grub-0.97/stage2/boot.c')
| -rw-r--r-- | usr/src/grub/grub-0.97/stage2/boot.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/usr/src/grub/grub-0.97/stage2/boot.c b/usr/src/grub/grub-0.97/stage2/boot.c index cfc2336a4c..027de7709b 100644 --- a/usr/src/grub/grub-0.97/stage2/boot.c +++ b/usr/src/grub/grub-0.97/stage2/boot.c @@ -25,6 +25,8 @@ #include "imgact_aout.h" #include "i386-elf.h" +#define SAFE_LOAD_BASE 0xc800000 + static int cur_addr; entry_func entry_addr; static struct mod_list mll[99]; @@ -773,6 +775,17 @@ load_module (char *module, char *arg) { int len; + /* + * XXX Workaround for RICHMOND-16: on some systems, the region + * [c700000, c800000) is corrupted by an unknown external (off-CPU) actor(s) + * during boot. To be on the safe side, we will simply ensure that every + * module is loaded above this region. Note that this means this particular + * boot loader supports only systems with at least 200 MB of DRAM plus the + * amount of space used by any modules. + */ + if (cur_addr < SAFE_LOAD_BASE) + cur_addr = SAFE_LOAD_BASE; + /* if we are supposed to load on 4K boundaries */ cur_addr = (cur_addr + 0xFFF) & 0xFFFFF000; |