diff options
Diffstat (limited to 'drivers/misc/vexpress/arm-spc.c')
| -rw-r--r-- | drivers/misc/vexpress/arm-spc.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/misc/vexpress/arm-spc.c b/drivers/misc/vexpress/arm-spc.c index 6453d5b0ac5..6e2e4820c3a 100644 --- a/drivers/misc/vexpress/arm-spc.c +++ b/drivers/misc/vexpress/arm-spc.c @@ -25,6 +25,10 @@ #include <linux/spinlock.h> #include <linux/vexpress.h> +#include <asm/cacheflush.h> +#include <asm/memory.h> +#include <asm/outercache.h> + #define SNOOP_CTL_A15 0x404 #define SNOOP_CTL_A7 0x504 #define PERF_LVL_A15 0xB00 @@ -323,6 +327,13 @@ static int __devinit vexpress_spc_driver_probe(struct platform_device *pdev) spin_lock_init(&info->lock); platform_set_drvdata(pdev, info); + /* + * Multi-cluster systems may need this data when non-coherent, during + * cluster power-up/power-down. Make sure it reaches main memory: + */ + __cpuc_flush_dcache_area(info, sizeof *info); + outer_clean_range(virt_to_phys(info), virt_to_phys(info + 1)); + pr_info("vexpress_spc loaded at %p\n", info->baseaddr); vexpress_spc_loaded = true; return ret; |