diff options
| author | H. Peter Anvin <hpa@linux.intel.com> | 2012-10-19 07:54:24 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2012-10-19 07:55:09 -0700 |
| commit | 4533d86270d7986e00594495dde9a109d6be27ae (patch) | |
| tree | c2473cac653f7b98e5bd5e6475e63734be4b7644 /arch/mips/netlogic/xlp/setup.c | |
| parent | 21c5e50e15b1abd797e62f18fd7f90b9cc004cbd (diff) | |
| parent | 5bc66170dc486556a1e36fd384463536573f4b82 (diff) | |
Merge commit '5bc66170dc486556a1e36fd384463536573f4b82' into x86/urgent
From Borislav Petkov <bp@amd64.org>:
Below is a RAS fix which reverts the addition of a sysfs attribute
which we agreed is not needed, post-factum. And this should go in now
because that sysfs attribute is going to end up in 3.7 otherwise and
thus exposed to userspace; removing it then would be a lot harder.
This is done as a merge rather than a simple patch/cherry-pick since
the baseline for this patch was not in the previous x86/urgent.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/mips/netlogic/xlp/setup.c')
| -rw-r--r-- | arch/mips/netlogic/xlp/setup.c | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/arch/mips/netlogic/xlp/setup.c b/arch/mips/netlogic/xlp/setup.c index 3dec9f28b65..d8997098def 100644 --- a/arch/mips/netlogic/xlp/setup.c +++ b/arch/mips/netlogic/xlp/setup.c @@ -35,6 +35,7 @@ #include <linux/kernel.h> #include <linux/serial_8250.h> #include <linux/pm.h> +#include <linux/bootmem.h> #include <asm/reboot.h> #include <asm/time.h> @@ -56,6 +57,7 @@ unsigned long nlm_common_ebase = 0x0; /* default to uniprocessor */ uint32_t nlm_coremask = 1, nlm_cpumask = 1; int nlm_threads_per_core = 1; +extern u32 __dtb_start[]; static void nlm_linux_exit(void) { @@ -96,9 +98,18 @@ void __init prom_init(void) { void *fdtp; - fdtp = (void *)(long)fw_arg0; xlp_mmu_init(); nlm_hal_init(); + + /* + * If no FDT pointer is passed in, use the built-in FDT. + * device_tree_init() does not handle CKSEG0 pointers in + * 64-bit, so convert pointer. + */ + fdtp = (void *)(long)fw_arg0; + if (!fdtp) + fdtp = __dtb_start; + fdtp = phys_to_virt(__pa(fdtp)); early_init_devtree(fdtp); nlm_common_ebase = read_c0_ebase() & (~((1 << 12) - 1)); @@ -112,6 +123,25 @@ void __init prom_init(void) #endif } +void __init device_tree_init(void) +{ + unsigned long base, size; + + if (!initial_boot_params) + return; + + base = virt_to_phys((void *)initial_boot_params); + size = be32_to_cpu(initial_boot_params->totalsize); + + /* Before we do anything, lets reserve the dt blob */ + reserve_bootmem(base, size, BOOTMEM_DEFAULT); + + unflatten_device_tree(); + + /* free the space reserved for the dt blob */ + free_bootmem(base, size); +} + static struct of_device_id __initdata xlp_ids[] = { { .compatible = "simple-bus", }, {}, |