diff options
| author | Becky Bruce <becky.bruce@freescale.com> | 2008-11-03 15:44:01 -0600 |
|---|---|---|
| committer | Jon Loeliger <jdl@freescale.com> | 2008-11-04 10:58:50 -0600 |
| commit | 1266df887781c779deaf6d05eea2ef90a470cb34 (patch) | |
| tree | e38395f12d4705cc9afc4c25030e4f837e86279a /cpu/mpc86xx/fdt.c | |
| parent | b5431560682d8f318fbc49db87cfe13ab41d2ee4 (diff) | |
| download | u-boot-imx-1266df887781c779deaf6d05eea2ef90a470cb34.zip u-boot-imx-1266df887781c779deaf6d05eea2ef90a470cb34.tar.gz u-boot-imx-1266df887781c779deaf6d05eea2ef90a470cb34.tar.bz2 | |
powerpc: change 86xx SMP boot method
We put the bootpg for the secondary cpus into memory and use
BPTR to get to it. This is a step towards converting to the
ePAPR boot methodology. Also, the code is written to
deal properly with more than 4GB of RAM.
Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Diffstat (limited to 'cpu/mpc86xx/fdt.c')
| -rw-r--r-- | cpu/mpc86xx/fdt.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/cpu/mpc86xx/fdt.c b/cpu/mpc86xx/fdt.c index 1fef94f5..3adfad9 100644 --- a/cpu/mpc86xx/fdt.c +++ b/cpu/mpc86xx/fdt.c @@ -9,9 +9,17 @@ #include <common.h> #include <libfdt.h> #include <fdt_support.h> +#include "mp.h" + +DECLARE_GLOBAL_DATA_PTR; void ft_cpu_setup(void *blob, bd_t *bd) { +#if (CONFIG_NUM_CPUS > 1) + int off; + u32 bootpg; +#endif + do_fixup_by_prop_u32(blob, "device_type", "cpu", 4, "timebase-frequency", bd->bi_busfreq / 4, 1); do_fixup_by_prop_u32(blob, "device_type", "cpu", 4, @@ -32,4 +40,17 @@ void ft_cpu_setup(void *blob, bd_t *bd) do_fixup_by_compat_u32(blob, "ns16550", "clock-frequency", CONFIG_SYS_NS16550_CLK, 1); #endif + +#if (CONFIG_NUM_CPUS > 1) + /* if we have 4G or more of memory, put the boot page at 4Gb-1M */ + if (gd->ram_size > 0xfffff000) + bootpg = 0xfff00000; + else + bootpg = gd->ram_size - (1024 * 1024); + + /* Reserve the boot page so OSes dont use it */ + off = fdt_add_mem_rsv(blob, bootpg, (u64)4096); + if (off < 0) + printf("%s: %s\n", __FUNCTION__, fdt_strerror(off)); +#endif } |