diff options
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/fdt.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/fdt.c b/arch/powerpc/cpu/mpc85xx/fdt.c index ab0933076..16d7f6a22 100644 --- a/arch/powerpc/cpu/mpc85xx/fdt.c +++ b/arch/powerpc/cpu/mpc85xx/fdt.c @@ -100,6 +100,22 @@ void ft_fixup_cpu(void *blob, u64 memory_limit) printf("Failed to reserve memory for bootpg: %s\n", fdt_strerror(off)); } + +#ifndef CONFIG_MPC8xxx_DISABLE_BPTR + /* + * Reserve the default boot page so OSes dont use it. + * The default boot page is always mapped to bootpg above using + * boot page translation. + */ + if (0xfffff000ull < memory_limit) { + off = fdt_add_mem_rsv(blob, 0xfffff000ull, (u64)4096); + if (off < 0) { + printf("Failed to reserve memory for 0xfffff000: %s\n", + fdt_strerror(off)); + } + } +#endif + /* Reserve spin table page */ if (spin_tbl_addr < memory_limit) { off = fdt_add_mem_rsv(blob, |