diff options
author | Kumar Gala <galak@gate.crashing.org> | 2006-01-11 17:57:13 -0600 |
---|---|---|
committer | Paul Mackerras <paulus@samba.org> | 2006-01-12 20:09:29 +1100 |
commit | cbbcf3401173f11f7e4c03c7ec8955ea29cd83b5 (patch) | |
tree | 3728682606776f026ac120fee00db7d8ddbaa108 /arch/powerpc/kernel/prom.c | |
parent | ea183a957abea8e05530a4536a9c2db16e9fdd85 (diff) | |
download | op-kernel-dev-cbbcf3401173f11f7e4c03c7ec8955ea29cd83b5.zip op-kernel-dev-cbbcf3401173f11f7e4c03c7ec8955ea29cd83b5.tar.gz |
[PATCH] powerpc: Fixed memory reserve map layout
powerpc: Fixed memory reserve map layout
The memory reserve map is suppose to be a pair of 64-bit integers
to represent each region. On ppc32 the code was treating the
pair as two 32-bit integers. Additional the prom_init code was
producing the wrong layout on ppc32.
Added a simple check to try to provide backwards compatibility.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/prom.c')
-rw-r--r-- | arch/powerpc/kernel/prom.c | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 34ab0da..02e2115 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -1100,17 +1100,37 @@ static int __init early_init_dt_scan_memory(unsigned long node, static void __init early_reserve_mem(void) { - unsigned long base, size; - unsigned long *reserve_map; + u64 base, size; + u64 *reserve_map; - reserve_map = (unsigned long *)(((unsigned long)initial_boot_params) + + reserve_map = (u64 *)(((unsigned long)initial_boot_params) + initial_boot_params->off_mem_rsvmap); +#ifdef CONFIG_PPC32 + /* + * Handle the case where we might be booting from an old kexec + * image that setup the mem_rsvmap as pairs of 32-bit values + */ + if (*reserve_map > 0xffffffffull) { + u32 base_32, size_32; + u32 *reserve_map_32 = (u32 *)reserve_map; + + while (1) { + base_32 = *(reserve_map_32++); + size_32 = *(reserve_map_32++); + if (size_32 == 0) + break; + DBG("reserving: %lx -> %lx\n", base_32, size_32); + lmb_reserve(base_32, size_32); + } + return; + } +#endif while (1) { base = *(reserve_map++); size = *(reserve_map++); if (size == 0) break; - DBG("reserving: %lx -> %lx\n", base, size); + DBG("reserving: %llx -> %llx\n", base, size); lmb_reserve(base, size); } |