diff options
| author | Kumar Gala <galak@kernel.crashing.org> | 2010-06-09 22:33:53 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2010-07-16 10:55:08 -0500 |
| commit | 8f3a7fa4a230f5e974e99b617138e2aaa45109e7 (patch) | |
| tree | 0a6687513dc8baa6144306721048af316da77272 /arch/powerpc/cpu/mpc86xx | |
| parent | 11beefa38267b756252de5d3ed4f88c45f3442c7 (diff) | |
powerpc/8xxx: Add is_core_disabled to remove disabled cores from dtb
If we explicitly disabled a core remove it from the dtb we pass on to
the kernel.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/cpu/mpc86xx')
| -rw-r--r-- | arch/powerpc/cpu/mpc86xx/fdt.c | 5 | ||||
| -rw-r--r-- | arch/powerpc/cpu/mpc86xx/mp.c | 17 |
2 files changed, 20 insertions, 2 deletions
diff --git a/arch/powerpc/cpu/mpc86xx/fdt.c b/arch/powerpc/cpu/mpc86xx/fdt.c index 51f3f4c220..ff89ee554c 100644 --- a/arch/powerpc/cpu/mpc86xx/fdt.c +++ b/arch/powerpc/cpu/mpc86xx/fdt.c @@ -1,5 +1,5 @@ /* - * Copyright 2008 Freescale Semiconductor, Inc. + * Copyright 2008,2010 Freescale Semiconductor, Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -55,6 +55,7 @@ void ft_cpu_setup(void *blob, bd_t *bd) off = fdt_add_mem_rsv(blob, bootpg, (u64)4096); if (off < 0) printf("%s: %s\n", __FUNCTION__, fdt_strerror(off)); -#endif + ft_fixup_num_cores(blob); +#endif } diff --git a/arch/powerpc/cpu/mpc86xx/mp.c b/arch/powerpc/cpu/mpc86xx/mp.c index 24eb30aaaa..30c99ebc56 100644 --- a/arch/powerpc/cpu/mpc86xx/mp.c +++ b/arch/powerpc/cpu/mpc86xx/mp.c @@ -66,6 +66,23 @@ int cpu_disable(int nr) return 0; } +int is_core_disabled(int nr) { + immap_t *immap = (immap_t *) CONFIG_SYS_CCSRBAR; + ccsr_gur_t *gur = &immap->im_gur; + u32 devdisr = in_be32(&gur->devdisr); + + switch (nr) { + case 0: + return (devdisr & MPC86xx_DEVDISR_CPU0); + case 1: + return (devdisr & MPC86xx_DEVDISR_CPU1); + default: + printf("Invalid cpu number for disable %d\n", nr); + } + + return 0; +} + int cpu_release(int nr, int argc, char * const argv[]) { /* dummy function so common/cmd_mp.c will build |