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-rw-r--r--arch/arm/configs/integrator_defconfig1
-rw-r--r--arch/arm/configs/keystone_defconfig2
-rw-r--r--arch/arm/configs/sunxi_defconfig1
-rw-r--r--arch/arm/configs/vt8500_v6_v7_defconfig1
-rw-r--r--arch/arm/mach-keystone/keystone.c74
-rw-r--r--arch/arm/mach-keystone/memory.h24
-rw-r--r--arch/arm/mach-keystone/platsmp.c18
7 files changed, 116 insertions, 5 deletions
diff --git a/arch/arm/configs/integrator_defconfig b/arch/arm/configs/integrator_defconfig
index 5bae19557591..c1f5adc5493e 100644
--- a/arch/arm/configs/integrator_defconfig
+++ b/arch/arm/configs/integrator_defconfig
@@ -73,7 +73,6 @@ CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_CPU=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_PL030=y
-CONFIG_COMMON_CLK_DEBUG=y
CONFIG_EXT2_FS=y
CONFIG_VFAT_FS=y
CONFIG_TMPFS=y
diff --git a/arch/arm/configs/keystone_defconfig b/arch/arm/configs/keystone_defconfig
index ec9a41d50680..07b43277ccd3 100644
--- a/arch/arm/configs/keystone_defconfig
+++ b/arch/arm/configs/keystone_defconfig
@@ -112,6 +112,7 @@ CONFIG_MTD_PLATRAM=y
CONFIG_MTD_M25P80=y
CONFIG_MTD_NAND=y
CONFIG_MTD_NAND_DAVINCI=y
+CONFIG_MTD_SPI_NOR=y
CONFIG_MTD_UBI=y
CONFIG_PROC_DEVICETREE=y
CONFIG_BLK_DEV_LOOP=y
@@ -146,7 +147,6 @@ CONFIG_USB_DWC3_VERBOSE=y
CONFIG_KEYSTONE_USB_PHY=y
CONFIG_DMADEVICES=y
CONFIG_TI_EDMA=y
-CONFIG_COMMON_CLK_DEBUG=y
CONFIG_MEMORY=y
CONFIG_TI_AEMIF=y
CONFIG_EXT4_FS=y
diff --git a/arch/arm/configs/sunxi_defconfig b/arch/arm/configs/sunxi_defconfig
index b5df4a511b0a..28287aebdc15 100644
--- a/arch/arm/configs/sunxi_defconfig
+++ b/arch/arm/configs/sunxi_defconfig
@@ -62,7 +62,6 @@ CONFIG_LEDS_GPIO=y
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
-CONFIG_COMMON_CLK_DEBUG=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_TMPFS=y
CONFIG_NFS_FS=y
diff --git a/arch/arm/configs/vt8500_v6_v7_defconfig b/arch/arm/configs/vt8500_v6_v7_defconfig
index f0520176acd0..9e7a25639690 100644
--- a/arch/arm/configs/vt8500_v6_v7_defconfig
+++ b/arch/arm/configs/vt8500_v6_v7_defconfig
@@ -73,7 +73,6 @@ CONFIG_LEDS_TRIGGERS=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_VT8500=y
CONFIG_DMADEVICES=y
-CONFIG_COMMON_CLK_DEBUG=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_PWM=y
CONFIG_PWM_VT8500=y
diff --git a/arch/arm/mach-keystone/keystone.c b/arch/arm/mach-keystone/keystone.c
index e0b9e1b9cf30..59b8383cbdb0 100644
--- a/arch/arm/mach-keystone/keystone.c
+++ b/arch/arm/mach-keystone/keystone.c
@@ -20,6 +20,9 @@
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/smp_plat.h>
+#include <asm/memory.h>
+
+#include "memory.h"
#include "keystone.h"
@@ -28,6 +31,27 @@
#define PLL_RESET BIT(16)
static void __iomem *keystone_rstctrl;
+static struct notifier_block platform_nb;
+static unsigned long keystone_dma_pfn_offset __read_mostly;
+
+static int keystone_platform_notifier(struct notifier_block *nb,
+ unsigned long event, void *data)
+{
+ struct device *dev = data;
+
+ if (event != BUS_NOTIFY_ADD_DEVICE)
+ return NOTIFY_DONE;
+
+ if (!dev)
+ return NOTIFY_BAD;
+
+ if (!dev->of_node) {
+ dev->dma_pfn_offset = keystone_dma_pfn_offset;
+ dev_err(dev, "set dma_pfn_offset%08lx\n",
+ dev->dma_pfn_offset);
+ }
+ return NOTIFY_OK;
+}
static void __init keystone_init(void)
{
@@ -42,9 +66,58 @@ static void __init keystone_init(void)
pr_warn("ti,keystone-reset iomap error\n");
keystone_pm_runtime_init();
+ if (platform_nb.notifier_call)
+ bus_register_notifier(&platform_bus_type, &platform_nb);
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
+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)
+{
+ 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;
+ phys_addr_t mem_start, mem_end;
+
+ BUG_ON(meminfo.nr_banks < 1);
+ mem_start = meminfo.bank[0].start;
+ mem_end = mem_start + meminfo.bank[0].size - 1;
+
+ /* 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) : "");
+ }
+
+ 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);
+ }
+
+ offset += KEYSTONE_HIGH_PHYS_START;
+ __pv_phys_pfn_offset = PFN_DOWN(offset);
+ __pv_offset = (offset - PAGE_OFFSET);
+
+ /* 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);
+}
+
static const char *keystone_match[] __initconst = {
"ti,keystone",
NULL,
@@ -76,4 +149,5 @@ DT_MACHINE_START(KEYSTONE, "Keystone")
.init_machine = keystone_init,
.dt_compat = keystone_match,
.restart = keystone_restart,
+ .init_meminfo = keystone_init_meminfo,
MACHINE_END
diff --git a/arch/arm/mach-keystone/memory.h b/arch/arm/mach-keystone/memory.h
new file mode 100644
index 000000000000..b854fb18eef1
--- /dev/null
+++ b/arch/arm/mach-keystone/memory.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2014 Texas Instruments, Inc.
+ * Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+#ifndef __MEMORY_H
+#define __MEMORY_H
+
+#define MAX_PHYSMEM_BITS 36
+#define SECTION_SIZE_BITS 34
+
+#define KEYSTONE_LOW_PHYS_START 0x80000000ULL
+#define KEYSTONE_LOW_PHYS_SIZE 0x80000000ULL /* 2G */
+#define KEYSTONE_LOW_PHYS_END (KEYSTONE_LOW_PHYS_START + \
+ KEYSTONE_LOW_PHYS_SIZE - 1)
+
+#define KEYSTONE_HIGH_PHYS_START 0x800000000ULL
+#define KEYSTONE_HIGH_PHYS_SIZE 0x400000000ULL /* 16G */
+#define KEYSTONE_HIGH_PHYS_END (KEYSTONE_HIGH_PHYS_START + \
+ KEYSTONE_HIGH_PHYS_SIZE - 1)
+#endif /* __MEMORY_H */
diff --git a/arch/arm/mach-keystone/platsmp.c b/arch/arm/mach-keystone/platsmp.c
index 5cf0683577ea..5f46a7cf907b 100644
--- a/arch/arm/mach-keystone/platsmp.c
+++ b/arch/arm/mach-keystone/platsmp.c
@@ -17,13 +17,16 @@
#include <linux/io.h>
#include <asm/smp_plat.h>
+#include <asm/prom.h>
+#include <asm/tlbflush.h>
+#include <asm/pgtable.h>
#include "keystone.h"
static int keystone_smp_boot_secondary(unsigned int cpu,
struct task_struct *idle)
{
- unsigned long start = virt_to_phys(&secondary_startup);
+ unsigned long start = virt_to_idmap(&secondary_startup);
int error;
pr_debug("keystone-smp: booting cpu %d, vector %08lx\n",
@@ -36,6 +39,19 @@ static int keystone_smp_boot_secondary(unsigned int cpu,
return error;
}
+#ifdef CONFIG_ARM_LPAE
+static void __cpuinit keystone_smp_secondary_initmem(unsigned int cpu)
+{
+ pgd_t *pgd0 = pgd_offset_k(0);
+ cpu_set_ttbr(1, __pa(pgd0) + TTBR1_OFFSET);
+ local_flush_tlb_all();
+}
+#else
+static inline void __cpuinit keystone_smp_secondary_initmem(unsigned int cpu)
+{}
+#endif
+
struct smp_operations keystone_smp_ops __initdata = {
.smp_boot_secondary = keystone_smp_boot_secondary,
+ .smp_secondary_init = keystone_smp_secondary_initmem,
};
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