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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
commite5fd91f1ef340da553f7a79da9540c3db711c937 (patch)
treeb11842027dc6641da63f4bcc524f8678263304a3 /arch/arm/mach-keystone/keystone.c
parent2a9b0348e685a63d97486f6749622b61e9e3292f (diff)
Linux-libre 4.2-gnu
Diffstat (limited to 'arch/arm/mach-keystone/keystone.c')
-rw-r--r--arch/arm/mach-keystone/keystone.c41
1 files changed, 17 insertions, 24 deletions
diff --git a/arch/arm/mach-keystone/keystone.c b/arch/arm/mach-keystone/keystone.c
index 066208758..e28801052 100644
--- a/arch/arm/mach-keystone/keystone.c
+++ b/arch/arm/mach-keystone/keystone.c
@@ -27,7 +27,6 @@
#include "keystone.h"
-static struct notifier_block platform_nb;
static unsigned long keystone_dma_pfn_offset __read_mostly;
static int keystone_platform_notifier(struct notifier_block *nb,
@@ -49,11 +48,18 @@ static int keystone_platform_notifier(struct notifier_block *nb,
return NOTIFY_OK;
}
+static struct notifier_block platform_nb = {
+ .notifier_call = keystone_platform_notifier,
+};
+
static void __init keystone_init(void)
{
- keystone_pm_runtime_init();
- if (platform_nb.notifier_call)
+ if (PHYS_OFFSET >= KEYSTONE_HIGH_PHYS_START) {
+ keystone_dma_pfn_offset = PFN_DOWN(KEYSTONE_HIGH_PHYS_START -
+ KEYSTONE_LOW_PHYS_START);
bus_register_notifier(&platform_bus_type, &platform_nb);
+ }
+ keystone_pm_runtime_init();
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
@@ -62,11 +68,9 @@ static phys_addr_t keystone_virt_to_idmap(unsigned long x)
return (phys_addr_t)(x) - CONFIG_PAGE_OFFSET + KEYSTONE_LOW_PHYS_START;
}
-static void __init keystone_init_meminfo(void)
+static long long __init keystone_pv_fixup(void)
{
- bool lpae = IS_ENABLED(CONFIG_ARM_LPAE);
- bool pvpatch = IS_ENABLED(CONFIG_ARM_PATCH_PHYS_VIRT);
- phys_addr_t offset = PHYS_OFFSET - KEYSTONE_LOW_PHYS_START;
+ long long offset;
phys_addr_t mem_start, mem_end;
mem_start = memblock_start_of_DRAM();
@@ -75,32 +79,21 @@ static void __init keystone_init_meminfo(void)
/* nothing to do if we are running out of the <32-bit space */
if (mem_start >= KEYSTONE_LOW_PHYS_START &&
mem_end <= KEYSTONE_LOW_PHYS_END)
- return;
-
- if (!lpae || !pvpatch) {
- pr_crit("Enable %s%s%s to run outside 32-bit space\n",
- !lpae ? __stringify(CONFIG_ARM_LPAE) : "",
- (!lpae && !pvpatch) ? " and " : "",
- !pvpatch ? __stringify(CONFIG_ARM_PATCH_PHYS_VIRT) : "");
- }
+ return 0;
if (mem_start < KEYSTONE_HIGH_PHYS_START ||
mem_end > KEYSTONE_HIGH_PHYS_END) {
pr_crit("Invalid address space for memory (%08llx-%08llx)\n",
- (u64)mem_start, (u64)mem_end);
+ (u64)mem_start, (u64)mem_end);
+ return 0;
}
- offset += KEYSTONE_HIGH_PHYS_START;
- __pv_phys_pfn_offset = PFN_DOWN(offset);
- __pv_offset = (offset - PAGE_OFFSET);
+ offset = KEYSTONE_HIGH_PHYS_START - KEYSTONE_LOW_PHYS_START;
/* Populate the arch idmap hook */
arch_virt_to_idmap = keystone_virt_to_idmap;
- platform_nb.notifier_call = keystone_platform_notifier;
- keystone_dma_pfn_offset = PFN_DOWN(KEYSTONE_HIGH_PHYS_START -
- KEYSTONE_LOW_PHYS_START);
- pr_info("Switching to high address space at 0x%llx\n", (u64)offset);
+ return offset;
}
static const char *const keystone_match[] __initconst = {
@@ -115,5 +108,5 @@ DT_MACHINE_START(KEYSTONE, "Keystone")
.smp = smp_ops(keystone_smp_ops),
.init_machine = keystone_init,
.dt_compat = keystone_match,
- .init_meminfo = keystone_init_meminfo,
+ .pv_fixup = keystone_pv_fixup,
MACHINE_END