diff options
| author | york <yorksun@freescale.com> | 2010-07-02 22:25:57 +0000 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2010-07-26 13:07:49 -0500 |
| commit | a3f18529ec9cd291f040f6a9c6e9ecf0f7cb721f (patch) | |
| tree | 819a9984838362b07377cf801111eee0a0a46eb0 /arch/powerpc | |
| parent | ebd7cb0ba98b8d1094152ef1ba2cf9ad906a16b8 (diff) | |
powerpc/85xx: Move INIT_RAM_ADDR physical address to 36-bit space
If 36-bit physical address is used, move the INIT_RAM_ADDR to higher
address. This frees the low 4GB address space for better use.
Signed-off-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/start.S | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/start.S b/arch/powerpc/cpu/mpc85xx/start.S index b3cb56a5b0..3278b109fe 100644 --- a/arch/powerpc/cpu/mpc85xx/start.S +++ b/arch/powerpc/cpu/mpc85xx/start.S @@ -330,8 +330,18 @@ _start_e500: lis r8,FSL_BOOKE_MAS2(CONFIG_SYS_INIT_RAM_ADDR, 0)@h ori r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_INIT_RAM_ADDR, 0)@l +#if defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW) && \ + defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH) + lis r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW, 0, + (MAS3_SX|MAS3_SW|MAS3_SR))@h + ori r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW, 0, + (MAS3_SX|MAS3_SW|MAS3_SR))@l + li r10,CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH + mtspr MAS7,r10 +#else lis r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h ori r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l +#endif mtspr MAS0,r6 mtspr MAS1,r7 |