diff options
Diffstat (limited to 'arch/arm')
39 files changed, 812 insertions, 130 deletions
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 7f0708c238ea..9afabbb5e798 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -2,6 +2,18 @@ menu "Kernel hacking" source "lib/Kconfig.debug" +config ARM_PTDUMP + bool "Export kernel pagetable layout to userspace via debugfs" + depends on DEBUG_KERNEL + select DEBUG_FS + ---help--- + Say Y here if you want to show the kernel pagetable layout in a + debugfs file. This information is only useful for kernel developers + who are working in architecture specific areas of the kernel. + It is probably not a good idea to enable this feature in a production + kernel. + If in doubt, say "N" + config STRICT_DEVMEM bool "Filter access to /dev/mem" depends on MMU @@ -1164,4 +1176,15 @@ config PID_IN_CONTEXTIDR additional instructions during context switch. Say Y here only if you are planning to use hardware trace tools with this kernel. +config DEBUG_SET_MODULE_RONX + bool "Set loadable kernel module data as NX and text as RO" + depends on MODULES + ---help--- + This option helps catch unintended modifications to loadable + kernel module's text and read-only data. It also prevents execution + of module data. Such protection may interfere with run-time code + patching and dynamic kernel tracing - and they might also protect + against certain classes of kernel exploits. + If in doubt, say "N". + endmenu diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi index 46e1d7ef163f..9987dd0e9c59 100644 --- a/arch/arm/boot/dts/r8a7790.dtsi +++ b/arch/arm/boot/dts/r8a7790.dtsi @@ -241,7 +241,7 @@ sdhi0: sdhi@ee100000 { compatible = "renesas,sdhi-r8a7790"; - reg = <0 0xee100000 0 0x100>; + reg = <0 0xee100000 0 0x200>; interrupt-parent = <&gic>; interrupts = <0 165 4>; cap-sd-highspeed; @@ -250,7 +250,7 @@ sdhi1: sdhi@ee120000 { compatible = "renesas,sdhi-r8a7790"; - reg = <0 0xee120000 0 0x100>; + reg = <0 0xee120000 0 0x200>; interrupt-parent = <&gic>; interrupts = <0 166 4>; cap-sd-highspeed; diff --git a/arch/arm/crypto/aesbs-core.S_shipped b/arch/arm/crypto/aesbs-core.S_shipped index 64205d453260..71e5fc7cfb18 100644 --- a/arch/arm/crypto/aesbs-core.S_shipped +++ b/arch/arm/crypto/aesbs-core.S_shipped @@ -58,7 +58,7 @@ # define VFP_ABI_FRAME 0 # define BSAES_ASM_EXTENDED_KEY # define XTS_CHAIN_TWEAK -# define __ARM_ARCH__ __LINUX_ARM_ARCH__ +# define __ARM_ARCH__ 7 #endif #ifdef __thumb__ diff --git a/arch/arm/crypto/bsaes-armv7.pl b/arch/arm/crypto/bsaes-armv7.pl index f3d96d932573..be068db960ee 100644 --- a/arch/arm/crypto/bsaes-armv7.pl +++ b/arch/arm/crypto/bsaes-armv7.pl @@ -701,7 +701,7 @@ $code.=<<___; # define VFP_ABI_FRAME 0 # define BSAES_ASM_EXTENDED_KEY # define XTS_CHAIN_TWEAK -# define __ARM_ARCH__ __LINUX_ARM_ARCH__ +# define __ARM_ARCH__ 7 #endif #ifdef __thumb__ diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h index ee753f1749cd..e9a49fe0284e 100644 --- a/arch/arm/include/asm/cacheflush.h +++ b/arch/arm/include/asm/cacheflush.h @@ -481,4 +481,9 @@ static inline void __sync_cache_range_r(volatile void *p, size_t size) : : : "r0","r1","r2","r3","r4","r5","r6","r7", \ "r9","r10","lr","memory" ) +int set_memory_ro(unsigned long addr, int numpages); +int set_memory_rw(unsigned long addr, int numpages); +int set_memory_x(unsigned long addr, int numpages); +int set_memory_nx(unsigned long addr, int numpages); + #endif diff --git a/arch/arm/include/asm/mach/map.h b/arch/arm/include/asm/mach/map.h index 2fe141fcc8d6..f98c7f32c9c8 100644 --- a/arch/arm/include/asm/mach/map.h +++ b/arch/arm/include/asm/mach/map.h @@ -22,18 +22,21 @@ struct map_desc { }; /* types 0-3 are defined in asm/io.h */ -#define MT_UNCACHED 4 -#define MT_CACHECLEAN 5 -#define MT_MINICLEAN 6 -#define MT_LOW_VECTORS 7 -#define MT_HIGH_VECTORS 8 -#define MT_MEMORY 9 -#define MT_ROM 10 -#define MT_MEMORY_NONCACHED 11 -#define MT_MEMORY_DTCM 12 -#define MT_MEMORY_ITCM 13 -#define MT_MEMORY_SO 14 -#define MT_MEMORY_DMA_READY 15 +enum { + MT_UNCACHED = 4, + MT_CACHECLEAN, + MT_MINICLEAN, + MT_LOW_VECTORS, + MT_HIGH_VECTORS, + MT_MEMORY_RWX, + MT_MEMORY_RW, + MT_ROM, + MT_MEMORY_RWX_NONCACHED, + MT_MEMORY_RW_DTCM, + MT_MEMORY_RWX_ITCM, + MT_MEMORY_RW_SO, + MT_MEMORY_DMA_READY, +}; #ifdef CONFIG_MMU extern void iotable_init(struct map_desc *, int); diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h index 6976b03e5213..8756e4bcdba0 100644 --- a/arch/arm/include/asm/memory.h +++ b/arch/arm/include/asm/memory.h @@ -347,7 +347,8 @@ static inline __deprecated void *bus_to_virt(unsigned long x) #define ARCH_PFN_OFFSET PHYS_PFN_OFFSET #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) -#define virt_addr_valid(kaddr) ((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory) +#define virt_addr_valid(kaddr) (((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory) \ + && pfn_valid(__pa(kaddr) >> PAGE_SHIFT) ) #endif diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h index 86a659a19526..dfff709fda3c 100644 --- a/arch/arm/include/asm/pgtable-2level.h +++ b/arch/arm/include/asm/pgtable-2level.h @@ -160,6 +160,7 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr) return (pmd_t *)pud; } +#define pmd_large(pmd) (pmd_val(pmd) & 2) #define pmd_bad(pmd) (pmd_val(pmd) & 2) #define copy_pmd(pmdpd,pmdps) \ diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h index 4f9503908dca..03243f7eeddf 100644 --- a/arch/arm/include/asm/pgtable-3level.h +++ b/arch/arm/include/asm/pgtable-3level.h @@ -142,6 +142,7 @@ PMD_TYPE_TABLE) #define pmd_sect(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \ PMD_TYPE_SECT) +#define pmd_large(pmd) pmd_sect(pmd) #define pud_clear(pudp) \ do { \ diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h index 1571d126e9dd..7d59b524f2af 100644 --- a/arch/arm/include/asm/pgtable.h +++ b/arch/arm/include/asm/pgtable.h @@ -254,6 +254,8 @@ PTE_BIT_FUNC(mkclean, &= ~L_PTE_DIRTY); PTE_BIT_FUNC(mkdirty, |= L_PTE_DIRTY); PTE_BIT_FUNC(mkold, &= ~L_PTE_YOUNG); PTE_BIT_FUNC(mkyoung, |= L_PTE_YOUNG); +PTE_BIT_FUNC(mkexec, &= ~L_PTE_XN); +PTE_BIT_FUNC(mknexec, |= L_PTE_XN); static inline pte_t pte_mkspecial(pte_t pte) { return pte; } diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c index 739c3dfc1da2..34d5fd585bbb 100644 --- a/arch/arm/kernel/devtree.c +++ b/arch/arm/kernel/devtree.c @@ -171,7 +171,7 @@ void __init arm_dt_init_cpu_maps(void) bool arch_match_cpu_phys_id(int cpu, u64 phys_id) { - return (phys_id & MPIDR_HWID_BITMASK) == cpu_logical_map(cpu); + return phys_id == cpu_logical_map(cpu); } static const void * __init arch_get_next_mach(const char *const **match) diff --git a/arch/arm/kernel/perf_event_cpu.c b/arch/arm/kernel/perf_event_cpu.c index d85055cd24ba..20d553c9f5e2 100644 --- a/arch/arm/kernel/perf_event_cpu.c +++ b/arch/arm/kernel/perf_event_cpu.c @@ -254,7 +254,7 @@ static int probe_current_pmu(struct arm_pmu *pmu) static int cpu_pmu_device_probe(struct platform_device *pdev) { const struct of_device_id *of_id; - int (*init_fn)(struct arm_pmu *); + const int (*init_fn)(struct arm_pmu *); struct device_node *node = pdev->dev.of_node; struct arm_pmu *pmu; int ret = -ENODEV; diff --git a/arch/arm/kernel/tcm.c b/arch/arm/kernel/tcm.c index f50f19e5c138..7a3be1d4d0b1 100644 --- a/arch/arm/kernel/tcm.c +++ b/arch/arm/kernel/tcm.c @@ -52,7 +52,7 @@ static struct map_desc dtcm_iomap[] __initdata = { .virtual = DTCM_OFFSET, .pfn = __phys_to_pfn(DTCM_OFFSET), .length = 0, - .type = MT_MEMORY_DTCM + .type = MT_MEMORY_RW_DTCM } }; @@ -61,7 +61,7 @@ static struct map_desc itcm_iomap[] __initdata = { .virtual = ITCM_OFFSET, .pfn = __phys_to_pfn(ITCM_OFFSET), .length = 0, - .type = MT_MEMORY_ITCM + .type = MT_MEMORY_RWX_ITCM, } }; diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index a55a14267870..172ee18ff124 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -36,7 +36,13 @@ #include <asm/system_misc.h> #include <asm/opcodes.h> -static const char *handler[]= { "prefetch abort", "data abort", "address exception", "interrupt" }; +static const char *handler[]= { + "prefetch abort", + "data abort", + "address exception", + "interrupt", + "undefined instruction", +}; void *vectors_page; @@ -425,9 +431,10 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs) instr2 = __mem_to_opcode_thumb16(instr2); instr = __opcode_thumb32_compose(instr, instr2); } - } else if (get_user(instr, (u32 __user *)pc)) { + } else { + if (get_user(instr, (u32 __user *)pc)) + goto die_sig; instr = __mem_to_opcode_arm(instr); - goto die_sig; } if (call_undef_hook(regs, instr) == 0) diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c index 094b3459c288..2742e00ec5d6 100644 --- a/arch/arm/mach-at91/setup.c +++ b/arch/arm/mach-at91/setup.c @@ -81,7 +81,7 @@ void __init at91_init_sram(int bank, unsigned long base, unsigned int length) desc->pfn = __phys_to_pfn(base); desc->length = length; - desc->type = MT_MEMORY_NONCACHED; + desc->type = MT_MEMORY_RWX_NONCACHED; pr_info("AT91: sram at 0x%lx of 0x%x mapped at 0x%lx\n", base, length, desc->virtual); diff --git a/arch/arm/mach-footbridge/dc21285-timer.c b/arch/arm/mach-footbridge/dc21285-timer.c index 2babdbcaa691..3971104d32d4 100644 --- a/arch/arm/mach-footbridge/dc21285-timer.c +++ b/arch/arm/mach-footbridge/dc21285-timer.c @@ -115,13 +115,14 @@ static struct irqaction footbridge_timer_irq = { void __init footbridge_timer_init(void) { struct clock_event_device *ce = &ckevt_dc21285; + unsigned rate = DIV_ROUND_CLOSEST(mem_fclk_21285, 16); - clocksource_register_hz(&cksrc_dc21285, (mem_fclk_21285 + 8) / 16); + clocksource_register_hz(&cksrc_dc21285, rate); setup_irq(ce->irq, &footbridge_timer_irq); ce->cpumask = cpumask_of(smp_processor_id()); - clockevents_config_and_register(ce, mem_fclk_21285, 0x4, 0xffffff); + clockevents_config_and_register(ce, rate, 0x4, 0xffffff); } static u32 notrace footbridge_read_sched_clock(void) diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c index bd3bf66ce344..c7de89b263dd 100644 --- a/arch/arm/mach-highbank/highbank.c +++ b/arch/arm/mach-highbank/highbank.c @@ -53,6 +53,7 @@ static void __init highbank_scu_map_io(void) static void highbank_l2x0_disable(void) { + outer_flush_all(); /* Disable PL310 L2 Cache controller */ highbank_smc1(0x102, 0x0); } diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c index 4ec8d82b0492..44a59c3abfb0 100644 --- a/arch/arm/mach-omap2/board-ldp.c +++ b/arch/arm/mach-omap2/board-ldp.c @@ -242,12 +242,18 @@ static void __init ldp_display_init(void) static int ldp_twl_gpio_setup(struct device *dev, unsigned gpio, unsigned ngpio) { + int res; + /* LCD enable GPIO */ ldp_lcd_pdata.enable_gpio = gpio + 7; /* Backlight enable GPIO */ ldp_lcd_pdata.backlight_gpio = gpio + 15; + res = platform_device_register(&ldp_lcd_device); + if (res) + pr_err("Unable to register LCD: %d\n", res); + return 0; } @@ -346,7 +352,6 @@ static struct omap2_hsmmc_info mmc[] __initdata = { static struct platform_device *ldp_devices[] __initdata = { &ldp_gpio_keys_device, - &ldp_lcd_device, }; #ifdef CONFIG_OMAP_MUX diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c index cd22262a2cc0..07b68d5a7940 100644 --- a/arch/arm/mach-omap2/io.c +++ b/arch/arm/mach-omap2/io.c @@ -244,7 +244,7 @@ static struct map_desc omap44xx_io_desc[] __initdata = { .virtual = OMAP4_SRAM_VA, .pfn = __phys_to_pfn(OMAP4_SRAM_PA), .length = PAGE_SIZE, - .type = MT_MEMORY_SO, + .type = MT_MEMORY_RW_SO, }, #endif @@ -282,7 +282,7 @@ static struct map_desc omap54xx_io_desc[] __initdata = { .virtual = OMAP4_SRAM_VA, .pfn = __phys_to_pfn(OMAP4_SRAM_PA), .length = PAGE_SIZE, - .type = MT_MEMORY_SO, + .type = MT_MEMORY_RW_SO, }, #endif }; diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c index b39efd46abf9..dd893ec4c8f2 100644 --- a/arch/arm/mach-omap2/omap4-common.c +++ b/arch/arm/mach-omap2/omap4-common.c @@ -87,7 +87,7 @@ void __init omap_barriers_init(void) dram_io_desc[0].virtual = OMAP4_DRAM_BARRIER_VA; dram_io_desc[0].pfn = __phys_to_pfn(paddr); dram_io_desc[0].length = size; - dram_io_desc[0].type = MT_MEMORY_SO; + dram_io_desc[0].type = MT_MEMORY_RW_SO; iotable_init(dram_io_desc, ARRAY_SIZE(dram_io_desc)); dram_sync = (void __iomem *) dram_io_desc[0].virtual; sram_sync = (void __iomem *) OMAP4_SRAM_VA; @@ -162,6 +162,7 @@ void __iomem *omap4_get_l2cache_base(void) static void omap4_l2x0_disable(void) { + outer_flush_all(); /* Disable PL310 L2 Cache controller */ omap_smc1(0x102, 0x0); } diff --git a/arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c b/arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c index 56cebb05509e..d23c77fadb31 100644 --- a/arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c @@ -796,7 +796,7 @@ struct omap_hwmod omap2xxx_counter_32k_hwmod = { /* gpmc */ static struct omap_hwmod_irq_info omap2xxx_gpmc_irqs[] = { - { .irq = 20 }, + { .irq = 20 + OMAP_INTC_START, }, { .irq = -1 } }; @@ -841,7 +841,7 @@ static struct omap_hwmod_class omap2_rng_hwmod_class = { }; static struct omap_hwmod_irq_info omap2_rng_mpu_irqs[] = { - { .irq = 52 }, + { .irq = 52 + OMAP_INTC_START, }, { .irq = -1 } }; diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c index d33742908f97..4c3b1e6df508 100644 --- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c @@ -2165,7 +2165,7 @@ static struct omap_hwmod_class omap3xxx_gpmc_hwmod_class = { }; static struct omap_hwmod_irq_info omap3xxx_gpmc_irqs[] = { - { .irq = 20 }, + { .irq = 20 + OMAP_INTC_START, }, { .irq = -1 } }; @@ -2999,7 +2999,7 @@ static struct omap_mmu_dev_attr mmu_isp_dev_attr = { static struct omap_hwmod omap3xxx_mmu_isp_hwmod; static struct omap_hwmod_irq_info omap3xxx_mmu_isp_irqs[] = { - { .irq = 24 }, + { .irq = 24 + OMAP_INTC_START, }, { .irq = -1 } }; @@ -3041,7 +3041,7 @@ static struct omap_mmu_dev_attr mmu_iva_dev_attr = { static struct omap_hwmod omap3xxx_mmu_iva_hwmod; static struct omap_hwmod_irq_info omap3xxx_mmu_iva_irqs[] = { - { .irq = 28 }, + { .irq = 28 + OMAP_INTC_START, }, { .irq = -1 } }; diff --git a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c index db32d5380b11..18f333c440db 100644 --- a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c @@ -1637,7 +1637,7 @@ static struct omap_hwmod dra7xx_uart1_hwmod = { .class = &dra7xx_uart_hwmod_class, .clkdm_name = "l4per_clkdm", .main_clk = "uart1_gfclk_mux", - .flags = HWMOD_SWSUP_SIDLE_ACT, + .flags = HWMOD_SWSUP_SIDLE_ACT | DEBUG_OMAP2UART1_FLAGS, .prcm = { .omap4 = { .clkctrl_offs = DRA7XX_CM_L4PER_UART1_CLKCTRL_OFFSET, diff --git a/arch/arm/mach-pxa/include/mach/lubbock.h b/arch/arm/mach-pxa/include/mach/lubbock.h index 2a086e8373eb..958cd6af9384 100644 --- a/arch/arm/mach-pxa/include/mach/lubbock.h +++ b/arch/arm/mach-pxa/include/mach/lubbock.h @@ -10,6 +10,8 @@ * published by the Free Software Foundation. */ +#include <mach/irqs.h> + #define LUBBOCK_ETH_PHYS PXA_CS3_PHYS #define LUBBOCK_FPGA_PHYS PXA_CS2_PHYS diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c index c9808c684152..8443a27bca2f 100644 --- a/arch/arm/mach-sa1100/assabet.c +++ b/arch/arm/mach-sa1100/assabet.c @@ -75,12 +75,143 @@ void ASSABET_BCR_frob(unsigned int mask, unsigned int val) EXPORT_SYMBOL(ASSABET_BCR_frob); +/* + * The codec reset goes to three devices, so we need to release + * the rest when any one of these requests it. However, that + * causes the ADV7171 to consume around 100mA - more than half + * the LCD-blanked power. + * + * With the ADV7171, LCD and backlight enabled, we go over + * budget on the MAX846 Li-Ion charger, and if no Li-Ion battery + * is connected, the Assabet crashes. + */ +#define RST_UCB1X00 (1 << 0) +#define RST_UDA1341 (1 << 1) +#define RST_ADV7171 (1 << 2) + +#define SDA GPIO_GPIO(15) +#define SCK GPIO_GPIO(18) +#define MOD GPIO_GPIO(17) + +static void adv7171_start(void) +{ + GPSR = SCK; + udelay(1); + GPSR = SDA; + udelay(2); + GPCR = SDA; +} + +static void adv7171_stop(void) +{ + GPSR = SCK; + udelay(2); + GPSR = SDA; + udelay(1); +} + +static void adv7171_send(unsigned byte) +{ + unsigned i; + + for (i = 0; i < 8; i++, byte <<= 1) { + GPCR = SCK; + udelay(1); + if (byte & 0x80) + GPSR = SDA; + else + GPCR = SDA; + udelay(1); + GPSR = SCK; + udelay(1); + } + GPCR = SCK; + udelay(1); + GPSR = SDA; + udelay(1); + GPDR &= ~SDA; + GPSR = SCK; + udelay(1); + if (GPLR & SDA) + printk(KERN_WARNING "No ACK from ADV7171\n"); + udelay(1); + GPCR = SCK | SDA; + udelay(1); + GPDR |= SDA; + udelay(1); +} + +static void adv7171_write(unsigned reg, unsigned val) +{ + unsigned gpdr = GPDR; + unsigned gplr = GPLR; + + ASSABET_BCR = BCR_value | ASSABET_BCR_AUDIO_ON; + udelay(100); + + GPCR = SDA | SCK | MOD; /* clear L3 mode to ensure UDA1341 doesn't respond */ + GPDR = (GPDR | SCK | MOD) & ~SDA; + udelay(10); + if (!(GPLR & SDA)) + printk(KERN_WARNING "Something dragging SDA down?\n"); + GPDR |= SDA; + + adv7171_start(); + adv7171_send(0x54); + adv7171_send(reg); + adv7171_send(val); + adv7171_stop(); + + /* Restore GPIO state for L3 bus */ + GPSR = gplr & (SDA | SCK | MOD); + GPCR = (~gplr) & (SDA | SCK | MOD); + GPDR = gpdr; +} + +static void adv7171_sleep(void) +{ + /* Put the ADV7171 into sleep mode */ + adv7171_write(0x04, 0x40); +} + +static unsigned codec_nreset; + +static void assabet_codec_reset(unsigned mask, int set) +{ + unsigned long flags; + bool old; + + local_irq_save(flags); + old = !codec_nreset; + if (set) + codec_nreset &= ~mask; + else + codec_nreset |= mask; + + if (old != !codec_nreset) { + if (codec_nreset) { + ASSABET_BCR_set(ASSABET_BCR_NCODEC_RST); + adv7171_sleep(); + } else { + ASSABET_BCR_clear(ASSABET_BCR_NCODEC_RST); + } + } + local_irq_restore(flags); +} + static void assabet_ucb1x00_reset(enum ucb1x00_reset state) { - if (state == UCB_RST_PROBE) - ASSABET_BCR_set(ASSABET_BCR_CODEC_RST); + int set = state == UCB_RST_REMOVE || state == UCB_RST_SUSPEND || + state == UCB_RST_PROBE_FAIL; + assabet_codec_reset(RST_UCB1X00, set); } +void assabet_uda1341_reset(int set) +{ + assabet_codec_reset(RST_UDA1341, set); +} +EXPORT_SYMBOL(assabet_uda1341_reset); + /* * Assabet flash support code. @@ -155,12 +286,9 @@ static int assabet_irda_set_power(struct device *dev, unsigned int state) 0 }; - if (state < 4) { - state = bcr_state[state]; - ASSABET_BCR_clear(state ^ (ASSABET_BCR_IRDA_MD1| - ASSABET_BCR_IRDA_MD0)); - ASSABET_BCR_set(state); - } + if (state < 4) + ASSABET_BCR_frob(ASSABET_BCR_IRDA_MD1 | ASSABET_BCR_IRDA_MD0, + bcr_state[state]); return 0; } @@ -180,6 +308,7 @@ static struct irda_platform_data assabet_irda_data = { static struct ucb1x00_plat_data assabet_ucb1x00_data = { .reset = assabet_ucb1x00_reset, .gpio_base = -1, + .can_wakeup = 1, }; static struct mcp_plat_data assabet_mcp_data = { diff --git a/arch/arm/mach-sa1100/collie.c b/arch/arm/mach-sa1100/collie.c index 7fb96ebdc0fb..831a15824ec8 100644 --- a/arch/arm/mach-sa1100/collie.c +++ b/arch/arm/mach-sa1100/collie.c @@ -27,6 +27,8 @@ #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> #include <linux/timer.h> +#include <linux/gpio_keys.h> +#include <linux/input.h> #include <linux/gpio.h> #include <linux/pda_power.h> @@ -242,10 +244,43 @@ struct platform_device collie_locomo_device = { .resource = locomo_resources, }; +static struct gpio_keys_button collie_gpio_keys[] = { + { + .type = EV_PWR, + .code = KEY_RESERVED, + .gpio = COLLIE_GPIO_ON_KEY, + .desc = "On key", + .wakeup = 1, + .active_low = 1, + }, + { + .type = EV_PWR, + .code = KEY_WAKEUP, + .gpio = COLLIE_GPIO_WAKEUP, + .desc = "Sync", + .wakeup = 1, + .active_low = 1, + }, +}; + +static struct gpio_keys_platform_data collie_gpio_keys_data = { + .buttons = collie_gpio_keys, + .nbuttons = ARRAY_SIZE(collie_gpio_keys), +}; + +static struct platform_device collie_gpio_keys_device = { + .name = "gpio-keys", + .id = -1, + .dev = { + .platform_data = &collie_gpio_keys_data, + }, +}; + static struct platform_device *devices[] __initdata = { &collie_locomo_device, &colliescoop_device, &collie_power_device, + &collie_gpio_keys_device, }; static struct mtd_partition collie_partitions[] = { diff --git a/arch/arm/mach-sa1100/h3100.c b/arch/arm/mach-sa1100/h3100.c index b8f2b151539b..daa27c474c13 100644 --- a/arch/arm/mach-sa1100/h3100.c +++ b/arch/arm/mach-sa1100/h3100.c @@ -28,15 +28,35 @@ /* * helper for sa1100fb */ +static struct gpio h3100_lcd_gpio[] = { + { H3100_GPIO_LCD_3V_ON, GPIOF_OUT_INIT_LOW, "LCD 3V" }, + { H3XXX_EGPIO_LCD_ON, GPIOF_OUT_INIT_LOW, "LCD ON" }, +}; + +static bool h3100_lcd_request(void) +{ + static bool h3100_lcd_ok; + int rc; + + if (h3100_lcd_ok) + return true; + + rc = gpio_request_array(h3100_lcd_gpio, ARRAY_SIZE(h3100_lcd_gpio)); + if (rc) + pr_err("%s: can't request GPIOs\n", __func__); + else + h3100_lcd_ok = true; + + return h3100_lcd_ok; +} + static void h3100_lcd_power(int enable) { - if (!gpio_request(H3XXX_EGPIO_LCD_ON, "LCD ON")) { - gpio_set_value(H3100_GPIO_LCD_3V_ON, enable); - gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable); - gpio_free(H3XXX_EGPIO_LCD_ON); - } else { - pr_err("%s: can't request H3XXX_EGPIO_LCD_ON\n", __func__); - } + if (!h3100_lcd_request()) + return; + + gpio_set_value(H3100_GPIO_LCD_3V_ON, enable); + gpio_set_value(H3XXX_EGPIO_LCD_ON, enable); } static struct sa1100fb_mach_info h3100_lcd_info = { @@ -69,6 +89,11 @@ static void __init h3100_map_io(void) /* * This turns the IRDA power on or off on the Compaq H3100 */ +static struct gpio h3100_irda_gpio[] = { + { H3100_GPIO_IR_ON, GPIOF_OUT_INIT_LOW, "IrDA power" }, + { H3100_GPIO_IR_FSEL, GPIOF_OUT_INIT_LOW, "IrDA fsel" }, +}; + static int h3100_irda_set_power(struct device *dev, unsigned int state) { gpio_set_value(H3100_GPIO_IR_ON, state); @@ -80,18 +105,27 @@ static void h3100_irda_set_speed(struct device *dev, unsigned int speed) gpio_set_value(H3100_GPIO_IR_FSEL, !(speed < 4000000)); } +static int h3100_irda_startup(struct device *dev) +{ + return gpio_request_array(h3100_irda_gpio, sizeof(h3100_irda_gpio)); +} + +static void h3100_irda_shutdown(struct device *dev) +{ + return gpio_free_array(h3100_irda_gpio, sizeof(h3100_irda_gpio)); +} + static struct irda_platform_data h3100_irda_data = { .set_power = h3100_irda_set_power, .set_speed = h3100_irda_set_speed, + .startup = h3100_irda_startup, + .shutdown = h3100_irda_shutdown, }; static struct gpio_default_state h3100_default_gpio[] = { - { H3100_GPIO_IR_ON, GPIO_MODE_OUT0, "IrDA power" }, - { H3100_GPIO_IR_FSEL, GPIO_MODE_OUT0, "IrDA fsel" }, { H3XXX_GPIO_COM_DCD, GPIO_MODE_IN, "COM DCD" }, { H3XXX_GPIO_COM_CTS, GPIO_MODE_IN, "COM CTS" }, { H3XXX_GPIO_COM_RTS, GPIO_MODE_OUT0, "COM RTS" }, - { H3100_GPIO_LCD_3V_ON, GPIO_MODE_OUT0, "LCD 3v" }, }; static void __init h3100_mach_init(void) diff --git a/arch/arm/mach-sa1100/h3600.c b/arch/arm/mach-sa1100/h3600.c index b8dc5bd22623..a663e7230141 100644 --- a/arch/arm/mach-sa1100/h3600.c +++ b/arch/arm/mach-sa1100/h3600.c @@ -28,35 +28,39 @@ /* * helper for sa1100fb */ +static struct gpio h3600_lcd_gpio[] = { + { H3XXX_EGPIO_LCD_ON, GPIOF_OUT_INIT_LOW, "LCD power" }, + { H3600_EGPIO_LCD_PCI, GPIOF_OUT_INIT_LOW, "LCD control" }, + { H3600_EGPIO_LCD_5V_ON, GPIOF_OUT_INIT_LOW, "LCD 5v" }, + { H3600_EGPIO_LVDD_ON, GPIOF_OUT_INIT_LOW, "LCD 9v/-6.5v" }, +}; + +static bool h3600_lcd_request(void) +{ + static bool h3600_lcd_ok; + int rc; + + if (h3600_lcd_ok) + return true; + + rc = gpio_request_array(h3600_lcd_gpio, ARRAY_SIZE(h3600_lcd_gpio)); + if (rc) + pr_err("%s: can't request GPIOs\n", __func__); + else + h3600_lcd_ok = true; + + return h3600_lcd_ok; +} + static void h3600_lcd_power(int enable) { - if (gpio_request(H3XXX_EGPIO_LCD_ON, "LCD power")) { - pr_err("%s: can't request H3XXX_EGPIO_LCD_ON\n", __func__); - goto err1; - } - if (gpio_request(H3600_EGPIO_LCD_PCI, "LCD control")) { - pr_err("%s: can't request H3XXX_EGPIO_LCD_PCI\n", __func__); - goto err2; - } - if (gpio_request(H3600_EGPIO_LCD_5V_ON, "LCD 5v")) { - pr_err("%s: can't request H3XXX_EGPIO_LCD_5V_ON\n", __func__); - goto err3; - } - if (gpio_request(H3600_EGPIO_LVDD_ON, "LCD 9v/-6.5v")) { - pr_err("%s: can't request H3600_EGPIO_LVDD_ON\n", __func__); - goto err4; - } + if (!h3600_lcd_request()) + return; gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable); gpio_direction_output(H3600_EGPIO_LCD_PCI, enable); gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable); gpio_direction_output(H3600_EGPIO_LVDD_ON, enable); - - gpio_free(H3600_EGPIO_LVDD_ON); -err4: gpio_free(H3600_EGPIO_LCD_5V_ON); -err3: gpio_free(H3600_EGPIO_LCD_PCI); -err2: gpio_free(H3XXX_EGPIO_LCD_ON); -err1: return; } static const struct sa1100fb_rgb h3600_rgb_16 = { @@ -93,6 +97,11 @@ static void __init h3600_map_io(void) /* * This turns the IRDA power on or off on the Compaq H3600 */ +static struct gpio h3600_irda_gpio[] = { + { H3600_EGPIO_IR_ON, GPIOF_OUT_INIT_LOW, "IrDA power" }, + { H3600_EGPIO_IR_FSEL, GPIOF_OUT_INIT_LOW, "IrDA fsel" }, +}; + static int h3600_irda_set_power(struct device *dev, unsigned int state) { gpio_set_value(H3600_EGPIO_IR_ON, state); @@ -106,29 +115,12 @@ static void h3600_irda_set_speed(struct device *dev, unsigned int speed) static int h3600_irda_startup(struct device *dev) { - int err = gpio_request(H3600_EGPIO_IR_ON, "IrDA power"); - if (err) - goto err1; - err = gpio_direction_output(H3600_EGPIO_IR_ON, 0); - if (err) - goto err2; - err = gpio_request(H3600_EGPIO_IR_FSEL, "IrDA fsel"); - if (err) - goto err2; - err = gpio_direction_output(H3600_EGPIO_IR_FSEL, 0); - if (err) - goto err3; - return 0; - -err3: gpio_free(H3600_EGPIO_IR_FSEL); -err2: gpio_free(H3600_EGPIO_IR_ON); -err1: return err; + return gpio_request_array(h3600_irda_gpio, sizeof(h3600_irda_gpio)); } static void h3600_irda_shutdown(struct device *dev) { - gpio_free(H3600_EGPIO_IR_ON); - gpio_free(H3600_EGPIO_IR_FSEL); + return gpio_free_array(h3600_irda_gpio, sizeof(h3600_irda_gpio)); } static struct irda_platform_data h3600_irda_data = { diff --git a/arch/arm/mach-sa1100/include/mach/assabet.h b/arch/arm/mach-sa1100/include/mach/assabet.h index 307391488c22..c23fcdb047a5 100644 --- a/arch/arm/mach-sa1100/include/mach/assabet.h +++ b/arch/arm/mach-sa1100/include/mach/assabet.h @@ -39,8 +39,8 @@ extern unsigned long SCR_value; #define ASSABET_BCR_CF_PWR (1<<0) /* Compact Flash Power (1 = 3.3v, 0 = off) */ #define ASSABET_BCR_CF_RST (1<<1) /* Compact Flash Reset (1 = power up reset) */ -#define ASSABET_BCR_GFX_RST (1<<1) /* Graphics Accelerator Reset (0 = hold reset) */ -#define ASSABET_BCR_CODEC_RST (1<<2) /* 0 = Holds UCB1300, ADI7171, and UDA1341 in reset */ +#define ASSABET_BCR_NGFX_RST (1<<1) /* Graphics Accelerator Reset (0 = hold reset) */ +#define ASSABET_BCR_NCODEC_RST (1<<2) /* 0 = Holds UCB1300, ADI7171, and UDA1341 in reset */ #define ASSABET_BCR_IRDA_FSEL (1<<3) /* IRDA Frequency select (0 = SIR, 1 = MIR/ FIR) */ #define ASSABET_BCR_IRDA_MD0 (1<<4) /* Range/Power select */ #define ASSABET_BCR_IRDA_MD1 (1<<5) /* Range/Power select */ @@ -69,6 +69,8 @@ extern void ASSABET_BCR_frob(unsigned int mask, unsigned int set); #define ASSABET_BCR_frob(x,y) do { } while (0) #endif +extern void assabet_uda1341_reset(int set); + #define ASSABET_BCR_set(x) ASSABET_BCR_frob((x), (x)) #define ASSABET_BCR_clear(x) ASSABET_BCR_frob((x), 0) diff --git a/arch/arm/mach-shmobile/board-armadillo800eva.c b/arch/arm/mach-shmobile/board-armadillo800eva.c index 958e3cbf0ac2..c18689123023 100644 --- a/arch/arm/mach-shmobile/board-armadillo800eva.c +++ b/arch/arm/mach-shmobile/board-armadillo800eva.c @@ -614,6 +614,11 @@ static struct regulator_consumer_supply fixed3v3_power_consumers[] = { REGULATOR_SUPPLY("vqmmc", "sh_mmcif"), }; +/* Fixed 3.3V regulator used by LCD backlight */ +static struct regulator_consumer_supply fixed5v0_power_consumers[] = { + REGULATOR_SUPPLY("power", "pwm-backlight.0"), +}; + /* Fixed 3.3V regulator to be used by SDHI0 */ static struct regulator_consumer_supply vcc_sdhi0_consumers[] = { REGULATOR_SUPPLY("vmmc", "sh_mobile_sdhi.0"), @@ -1196,6 +1201,8 @@ static void __init eva_init(void) regulator_register_always_on(0, "fixed-3.3V", fixed3v3_power_consumers, ARRAY_SIZE(fixed3v3_power_consumers), 3300000); + regulator_register_always_on(3, "fixed-5.0V", fixed5v0_power_consumers, + ARRAY_SIZE(fixed5v0_power_consumers), 5000000); pinctrl_register_mappings(eva_pinctrl_map, ARRAY_SIZE(eva_pinctrl_map)); pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup)); diff --git a/arch/arm/mach-shmobile/board-bockw.c b/arch/arm/mach-shmobile/board-bockw.c index 38611526fe9a..3c4995aebd22 100644 --- a/arch/arm/mach-shmobile/board-bockw.c +++ b/arch/arm/mach-shmobile/board-bockw.c @@ -679,7 +679,7 @@ static void __init bockw_init(void) .id = i, .data = &rsnd_card_info[i], .size_data = sizeof(struct asoc_simple_card_info), - .dma_mask = ~0, + .dma_mask = DMA_BIT_MASK(32), }; platform_device_register_full(&cardinfo); diff --git a/arch/arm/mach-ux500/setup.h b/arch/arm/mach-ux500/setup.h index bdb356498a74..b1dd8584bed4 100644 --- a/arch/arm/mach-ux500/setup.h +++ b/arch/arm/mach-ux500/setup.h @@ -43,7 +43,7 @@ extern void ux500_timer_init(void); .virtual = IO_ADDRESS(x), \ .pfn = __phys_to_pfn(x), \ .length = sz, \ - .type = MT_MEMORY, \ + .type = MT_MEMORY_RWX, \ } extern struct smp_operations ux500_smp_ops; diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile index ecfe6e53f6e0..7f39ce2f841f 100644 --- a/arch/arm/mm/Makefile +++ b/arch/arm/mm/Makefile @@ -12,6 +12,7 @@ ifneq ($(CONFIG_MMU),y) obj-y += nommu.o endif +obj-$(CONFIG_ARM_PTDUMP) += dump.o obj-$(CONFIG_MODULES) += proc-syms.o obj-$(CONFIG_ALIGNMENT_TRAP) += alignment.o diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index f61a5707823a..1a77450e728a 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -376,7 +376,7 @@ void __init init_dma_coherent_pool_size(unsigned long size) static int __init atomic_pool_init(void) { struct dma_pool *pool = &atomic_pool; - pgprot_t prot = pgprot_dmacoherent(pgprot_kernel); + pgprot_t prot = pgprot_dmacoherent(PAGE_KERNEL); gfp_t gfp = GFP_KERNEL | GFP_DMA; unsigned long nr_pages = pool->size >> PAGE_SHIFT; unsigned long *bitmap; @@ -624,7 +624,7 @@ static void __free_from_contiguous(struct device *dev, struct page *page, if (PageHighMem(page)) __dma_free_remap(cpu_addr, size); else - __dma_remap(page, size, pgprot_kernel); + __dma_remap(page, size, PAGE_KERNEL); dma_release_from_contiguous(dev, page, size >> PAGE_SHIFT); } @@ -1351,7 +1351,7 @@ static void __iommu_free_atomic(struct device *dev, void *cpu_addr, static void *arm_iommu_alloc_attrs(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp, struct dma_attrs *attrs) { - pgprot_t prot = __get_dma_pgprot(attrs, pgprot_kernel); + pgprot_t prot = __get_dma_pgprot(attrs, PAGE_KERNEL); struct page **pages; void *addr = NULL; diff --git a/arch/arm/mm/dump.c b/arch/arm/mm/dump.c new file mode 100644 index 000000000000..2b3a56414271 --- /dev/null +++ b/arch/arm/mm/dump.c @@ -0,0 +1,345 @@ +/* + * Debug helper to dump the current kernel pagetables of the system + * so that we can see what the various memory ranges are set to. + * + * Derived from x86 implementation: + * (C) Copyright 2008 Intel Corporation + * + * Author: Arjan van de Ven <arjan@linux.intel.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; version 2 + * of the License. + */ +#include <linux/debugfs.h> +#include <linux/fs.h> +#include <linux/mm.h> +#include <linux/seq_file.h> + +#include <asm/fixmap.h> +#include <asm/pgtable.h> + +struct addr_marker { + unsigned long start_address; + const char *name; +}; + +static struct addr_marker address_markers[] = { + { MODULES_VADDR, "Modules" }, + { PAGE_OFFSET, "Kernel Mapping" }, + { 0, "vmalloc() Area" }, + { VMALLOC_END, "vmalloc() End" }, + { FIXADDR_START, "Fixmap Area" }, + { CONFIG_VECTORS_BASE, "Vectors" }, + { CONFIG_VECTORS_BASE + PAGE_SIZE * 2, "Vectors End" }, + { -1, NULL }, +}; + +struct pg_state { + struct seq_file *seq; + const struct addr_marker *marker; + unsigned long start_address; + unsigned level; + u64 current_prot; +}; + +struct prot_bits { + u64 mask; + u64 val; + const char *set; + const char *clear; +}; + +static const struct prot_bits pte_bits[] = { + { + .mask = L_PTE_USER, + .val = L_PTE_USER, + .set = "USR", + .clear = " ", + }, { + .mask = L_PTE_RDONLY, + .val = L_PTE_RDONLY, + .set = "ro", + .clear = "RW", + }, { + .mask = L_PTE_XN, + .val = L_PTE_XN, + .set = "NX", + .clear = "x ", + }, { + .mask = L_PTE_SHARED, + .val = L_PTE_SHARED, + .set = "SHD", + .clear = " ", + }, { + .mask = L_PTE_MT_MASK, + .val = L_PTE_MT_UNCACHED, + .set = "SO/UNCACHED", + }, { + .mask = L_PTE_MT_MASK, + .val = L_PTE_MT_BUFFERABLE, + .set = "MEM/BUFFERABLE/WC", + }, { + .mask = L_PTE_MT_MASK, + .val = L_PTE_MT_WRITETHROUGH, + .set = "MEM/CACHED/WT", + }, { + .mask = L_PTE_MT_MASK, + .val = L_PTE_MT_WRITEBACK, + .set = "MEM/CACHED/WBRA", +#ifndef CONFIG_ARM_LPAE + }, { + .mask = L_PTE_MT_MASK, + .val = L_PTE_MT_MINICACHE, + .set = "MEM/MINICACHE", +#endif + }, { + .mask = L_PTE_MT_MASK, + .val = L_PTE_MT_WRITEALLOC, + .set = "MEM/CACHED/WBWA", + }, { + .mask = L_PTE_MT_MASK, + .val = L_PTE_MT_DEV_SHARED, + .set = "DEV/SHARED", +#ifndef CONFIG_ARM_LPAE + }, { + .mask = L_PTE_MT_MASK, + .val = L_PTE_MT_DEV_NONSHARED, + .set = "DEV/NONSHARED", +#endif + }, { + .mask = L_PTE_MT_MASK, + .val = L_PTE_MT_DEV_WC, + .set = "DEV/WC", + }, { + .mask = L_PTE_MT_MASK, + .val = L_PTE_MT_DEV_CACHED, + .set = "DEV/CACHED", + }, +}; + +static const struct prot_bits section_bits[] = { +#ifndef CONFIG_ARM_LPAE + /* These are approximate */ + { + .mask = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE, + .val = 0, + .set = " ro", + }, { + .mask = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE, + .val = PMD_SECT_AP_WRITE, + .set = " RW", + }, { + .mask = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE, + .val = PMD_SECT_AP_READ, + .set = "USR ro", + }, { + .mask = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE, + .val = PMD_SECT_AP_READ | PMD_SECT_AP_WRITE, + .set = "USR RW", +#else + { + .mask = PMD_SECT_USER, + .val = PMD_SECT_USER, + .set = "USR", + }, { + .mask = PMD_SECT_RDONLY, + .val = PMD_SECT_RDONLY, + .set = "ro", + .clear = "RW", +#endif + }, { + .mask = PMD_SECT_XN, + .val = PMD_SECT_XN, + .set = "NX", + .clear = "x ", + }, { + .mask = PMD_SECT_S, + .val = PMD_SECT_S, + .set = "SHD", + .clear = " ", + }, +}; + +struct pg_level { + const struct prot_bits *bits; + size_t num; + u64 mask; +}; + +static struct pg_level pg_level[] = { + { + }, { /* pgd */ + }, { /* pud */ + }, { /* pmd */ + .bits = section_bits, + .num = ARRAY_SIZE(section_bits), + }, { /* pte */ + .bits = pte_bits, + .num = ARRAY_SIZE(pte_bits), + }, +}; + +static void dump_prot(struct pg_state *st, const struct prot_bits *bits, size_t num) +{ + unsigned i; + + for (i = 0; i < num; i++, bits++) { + const char *s; + + if ((st->current_prot & bits->mask) == bits->val) + s = bits->set; + else + s = bits->clear; + + if (s) + seq_printf(st->seq, " %s", s); + } +} + +static void note_page(struct pg_state *st, unsigned long addr, unsigned level, u64 val) +{ + static const char units[] = "KMGTPE"; + u64 prot = val & pg_level[level].mask; + + if (addr < USER_PGTABLES_CEILING) + return; + + if (!st->level) { + st->level = level; + st->current_prot = prot; + seq_printf(st->seq, "---[ %s ]---\n", st->marker->name); + } else if (prot != st->current_prot || level != st->level || + addr >= st->marker[1].start_address) { + const char *unit = units; + unsigned long delta; + + if (st->current_prot) { + seq_printf(st->seq, "0x%08lx-0x%08lx ", + st->start_address, addr); + + delta = (addr - st->start_address) >> 10; + while (!(delta & 1023) && unit[1]) { + delta >>= 10; + unit++; + } + seq_printf(st->seq, "%9lu%c", delta, *unit); + if (pg_level[st->level].bits) + dump_prot(st, pg_level[st->level].bits, pg_level[st->level].num); + seq_printf(st->seq, "\n"); + } + + if (addr >= st->marker[1].start_address) { + st->marker++; + seq_printf(st->seq, "---[ %s ]---\n", st->marker->name); + } + st->start_address = addr; + st->current_prot = prot; + st->level = level; + } +} + +static void walk_pte(struct pg_state *st, pmd_t *pmd, unsigned long start) +{ + pte_t *pte = pte_offset_kernel(pmd, 0); + unsigned long addr; + unsigned i; + + for (i = 0; i < PTRS_PER_PTE; i++, pte++) { + addr = start + i * PAGE_SIZE; + note_page(st, addr, 4, pte_val(*pte)); + } +} + +static void walk_pmd(struct pg_state *st, pud_t *pud, unsigned long start) +{ + pmd_t *pmd = pmd_offset(pud, 0); + unsigned long addr; + unsigned i; + + for (i = 0; i < PTRS_PER_PMD; i++, pmd++) { + addr = start + i * PMD_SIZE; + if (pmd_none(*pmd) || pmd_large(*pmd) || !pmd_present(*pmd)) + note_page(st, addr, 3, pmd_val(*pmd)); + else + walk_pte(st, pmd, addr); + } +} + +static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start) +{ + pud_t *pud = pud_offset(pgd, 0); + unsigned long addr; + unsigned i; + + for (i = 0; i < PTRS_PER_PUD; i++, pud++) { + addr = start + i * PUD_SIZE; + if (!pud_none(*pud)) { + walk_pmd(st, pud, addr); + } else { + note_page(st, addr, 2, pud_val(*pud)); + } + } +} + +static void walk_pgd(struct seq_file *m) +{ + pgd_t *pgd = swapper_pg_dir; + struct pg_state st; + unsigned long addr; + unsigned i, pgdoff = USER_PGTABLES_CEILING / PGDIR_SIZE; + + memset(&st, 0, sizeof(st)); + st.seq = m; + st.marker = address_markers; + + pgd += pgdoff; + + for (i = pgdoff; i < PTRS_PER_PGD; i++, pgd++) { + addr = i * PGDIR_SIZE; + if (!pgd_none(*pgd)) { + walk_pud(&st, pgd, addr); + } else { + note_page(&st, addr, 1, pgd_val(*pgd)); + } + } + + note_page(&st, 0, 0, 0); +} + +static int ptdump_show(struct seq_file *m, void *v) +{ + walk_pgd(m); + return 0; +} + +static int ptdump_open(struct inode *inode, struct file *file) +{ + return single_open(file, ptdump_show, NULL); +} + +static const struct file_operations ptdump_fops = { + .open = ptdump_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int ptdump_init(void) +{ + struct dentry *pe; + unsigned i, j; + + for (i = 0; i < ARRAY_SIZE(pg_level); i++) + if (pg_level[i].bits) + for (j = 0; j < pg_level[i].num; j++) + pg_level[i].mask |= pg_level[i].bits[j].mask; + + address_markers[2].start_address = VMALLOC_START; + + pe = debugfs_create_file("kernel_page_tables", 0400, NULL, NULL, + &ptdump_fops); + return pe ? 0 : -ENOMEM; +} +__initcall(ptdump_init); diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c index 6d5ba9afb16a..3387e60e4ea3 100644 --- a/arch/arm/mm/flush.c +++ b/arch/arm/mm/flush.c @@ -175,16 +175,16 @@ void __flush_dcache_page(struct address_space *mapping, struct page *page) unsigned long i; if (cache_is_vipt_nonaliasing()) { for (i = 0; i < (1 << compound_order(page)); i++) { - void *addr = kmap_atomic(page); + void *addr = kmap_atomic(page + i); __cpuc_flush_dcache_area(addr, PAGE_SIZE); kunmap_atomic(addr); } } else { for (i = 0; i < (1 << compound_order(page)); i++) { - void *addr = kmap_high_get(page); + void *addr = kmap_high_get(page + i); if (addr) { __cpuc_flush_dcache_area(addr, PAGE_SIZE); - kunmap_high(page); + kunmap_high(page + i); } } } diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 1f7b19a47060..3e8f106ee5fe 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -229,7 +229,7 @@ void __init setup_dma_zone(const struct machine_desc *mdesc) #ifdef CONFIG_ZONE_DMA if (mdesc->dma_zone_size) { arm_dma_zone_size = mdesc->dma_zone_size; - arm_dma_limit = __pv_phys_offset + arm_dma_zone_size - 1; + arm_dma_limit = PHYS_OFFSET + arm_dma_zone_size - 1; } else arm_dma_limit = 0xffffffff; arm_dma_pfn_limit = arm_dma_limit >> PAGE_SHIFT; diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c index f123d6eb074b..f9c32ba73544 100644 --- a/arch/arm/mm/ioremap.c +++ b/arch/arm/mm/ioremap.c @@ -392,9 +392,9 @@ __arm_ioremap_exec(phys_addr_t phys_addr, size_t size, bool cached) unsigned int mtype; if (cached) - mtype = MT_MEMORY; + mtype = MT_MEMORY_RWX; else - mtype = MT_MEMORY_NONCACHED; + mtype = MT_MEMORY_RWX_NONCACHED; return __arm_ioremap_caller(phys_addr, size, mtype, __builtin_return_address(0)); diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 580ef2de82d7..4f08c133cc25 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -22,6 +22,7 @@ #include <asm/cputype.h> #include <asm/sections.h> #include <asm/cachetype.h> +#include <asm/sections.h> #include <asm/setup.h> #include <asm/smp_plat.h> #include <asm/tlb.h> @@ -287,36 +288,43 @@ static struct mem_type mem_types[] = { .prot_l1 = PMD_TYPE_TABLE, .domain = DOMAIN_USER, }, - [MT_MEMORY] = { + [MT_MEMORY_RWX] = { .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY, .prot_l1 = PMD_TYPE_TABLE, .prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE, .domain = DOMAIN_KERNEL, }, + [MT_MEMORY_RW] = { + .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY | + L_PTE_XN, + .prot_l1 = PMD_TYPE_TABLE, + .prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE, + .domain = DOMAIN_KERNEL, + }, [MT_ROM] = { .prot_sect = PMD_TYPE_SECT, .domain = DOMAIN_KERNEL, }, - [MT_MEMORY_NONCACHED] = { + [MT_MEMORY_RWX_NONCACHED] = { .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY | L_PTE_MT_BUFFERABLE, .prot_l1 = PMD_TYPE_TABLE, .prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE, .domain = DOMAIN_KERNEL, }, - [MT_MEMORY_DTCM] = { + [MT_MEMORY_RW_DTCM] = { .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY | L_PTE_XN, .prot_l1 = PMD_TYPE_TABLE, .prot_sect = PMD_TYPE_SECT | PMD_SECT_XN, .domain = DOMAIN_KERNEL, }, - [MT_MEMORY_ITCM] = { + [MT_MEMORY_RWX_ITCM] = { .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY, .prot_l1 = PMD_TYPE_TABLE, .domain = DOMAIN_KERNEL, }, - [MT_MEMORY_SO] = { + [MT_MEMORY_RW_SO] = { .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY | L_PTE_MT_UNCACHED | L_PTE_XN, .prot_l1 = PMD_TYPE_TABLE, @@ -325,7 +333,8 @@ static struct mem_type mem_types[] = { .domain = DOMAIN_KERNEL, }, [MT_MEMORY_DMA_READY] = { - .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY, + .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY | + L_PTE_XN, .prot_l1 = PMD_TYPE_TABLE, .domain = DOMAIN_KERNEL, }, @@ -337,6 +346,44 @@ const struct mem_type *get_mem_type(unsigned int type) } EXPORT_SYMBOL(get_mem_type); +#define PTE_SET_FN(_name, pteop) \ +static int pte_set_##_name(pte_t *ptep, pgtable_t token, unsigned long addr, \ + void *data) \ +{ \ + pte_t pte = pteop(*ptep); \ +\ + set_pte_ext(ptep, pte, 0); \ + return 0; \ +} \ + +#define SET_MEMORY_FN(_name, callback) \ +int set_memory_##_name(unsigned long addr, int numpages) \ +{ \ + unsigned long start = addr; \ + unsigned long size = PAGE_SIZE*numpages; \ + unsigned end = start + size; \ +\ + if (start < MODULES_VADDR || start >= MODULES_END) \ + return -EINVAL;\ +\ + if (end < MODULES_VADDR || end >= MODULES_END) \ + return -EINVAL; \ +\ + apply_to_page_range(&init_mm, start, size, callback, NULL); \ + flush_tlb_kernel_range(start, end); \ + return 0;\ +} + +PTE_SET_FN(ro, pte_wrprotect) +PTE_SET_FN(rw, pte_mkwrite) +PTE_SET_FN(x, pte_mkexec) +PTE_SET_FN(nx, pte_mknexec) + +SET_MEMORY_FN(ro, pte_set_ro) +SET_MEMORY_FN(rw, pte_set_rw) +SET_MEMORY_FN(x, pte_set_x) +SET_MEMORY_FN(nx, pte_set_nx) + /* * Adjust the PMD section entries according to the CPU in use. */ @@ -410,6 +457,9 @@ static void __init build_mem_type_table(void) mem_types[MT_DEVICE_NONSHARED].prot_sect |= PMD_SECT_XN; mem_types[MT_DEVICE_CACHED].prot_sect |= PMD_SECT_XN; mem_types[MT_DEVICE_WC].prot_sect |= PMD_SECT_XN; + + /* Also setup NX memory mapping */ + mem_types[MT_MEMORY_RW].prot_sect |= PMD_SECT_XN; } if (cpu_arch >= CPU_ARCH_ARMv7 && (cr & CR_TRE)) { /* @@ -487,11 +537,13 @@ static void __init build_mem_type_table(void) mem_types[MT_DEVICE_WC].prot_pte |= L_PTE_SHARED; mem_types[MT_DEVICE_CACHED].prot_sect |= PMD_SECT_S; mem_types[MT_DEVICE_CACHED].prot_pte |= L_PTE_SHARED; - mem_types[MT_MEMORY].prot_sect |= PMD_SECT_S; - mem_types[MT_MEMORY].prot_pte |= L_PTE_SHARED; + mem_types[MT_MEMORY_RWX].prot_sect |= PMD_SECT_S; + mem_types[MT_MEMORY_RWX].prot_pte |= L_PTE_SHARED; + mem_types[MT_MEMORY_RW].prot_sect |= PMD_SECT_S; + mem_types[MT_MEMORY_RW].prot_pte |= L_PTE_SHARED; mem_types[MT_MEMORY_DMA_READY].prot_pte |= L_PTE_SHARED; - mem_types[MT_MEMORY_NONCACHED].prot_sect |= PMD_SECT_S; - mem_types[MT_MEMORY_NONCACHED].prot_pte |= L_PTE_SHARED; + mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= PMD_SECT_S; + mem_types[MT_MEMORY_RWX_NONCACHED].prot_pte |= L_PTE_SHARED; } } @@ -502,15 +554,15 @@ static void __init build_mem_type_table(void) if (cpu_arch >= CPU_ARCH_ARMv6) { if (cpu_arch >= CPU_ARCH_ARMv7 && (cr & CR_TRE)) { /* Non-cacheable Normal is XCB = 001 */ - mem_types[MT_MEMORY_NONCACHED].prot_sect |= + mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= PMD_SECT_BUFFERED; } else { /* For both ARMv6 and non-TEX-remapping ARMv7 */ - mem_types[MT_MEMORY_NONCACHED].prot_sect |= + mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= PMD_SECT_TEX(1); } } else { - mem_types[MT_MEMORY_NONCACHED].prot_sect |= PMD_SECT_BUFFERABLE; + mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= PMD_SECT_BUFFERABLE; } #ifdef CONFIG_ARM_LPAE @@ -543,10 +595,12 @@ static void __init build_mem_type_table(void) mem_types[MT_LOW_VECTORS].prot_l1 |= ecc_mask; mem_types[MT_HIGH_VECTORS].prot_l1 |= ecc_mask; - mem_types[MT_MEMORY].prot_sect |= ecc_mask | cp->pmd; - mem_types[MT_MEMORY].prot_pte |= kern_pgprot; + mem_types[MT_MEMORY_RWX].prot_sect |= ecc_mask | cp->pmd; + mem_types[MT_MEMORY_RWX].prot_pte |= kern_pgprot; + mem_types[MT_MEMORY_RW].prot_sect |= ecc_mask | cp->pmd; + mem_types[MT_MEMORY_RW].prot_pte |= kern_pgprot; mem_types[MT_MEMORY_DMA_READY].prot_pte |= kern_pgprot; - mem_types[MT_MEMORY_NONCACHED].prot_sect |= ecc_mask; + mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= ecc_mask; mem_types[MT_ROM].prot_sect |= cp->pmd; switch (cp->pmd) { @@ -1296,6 +1350,8 @@ static void __init kmap_init(void) static void __init map_lowmem(void) { struct memblock_region *reg; + unsigned long kernel_x_start = round_down(__pa(_stext), SECTION_SIZE); + unsigned long kernel_x_end = round_up(__pa(__init_end), SECTION_SIZE); /* Map all the lowmem memory banks. */ for_each_memblock(memory, reg) { @@ -1308,12 +1364,40 @@ static void __init map_lowmem(void) if (start >= end) break; - map.pfn = __phys_to_pfn(start); - map.virtual = __phys_to_virt(start); - map.length = end - start; - map.type = MT_MEMORY; + if (end < kernel_x_start || start >= kernel_x_end) { + map.pfn = __phys_to_pfn(start); + map.virtual = __phys_to_virt(start); + map.length = end - start; + map.type = MT_MEMORY_RWX; - create_mapping(&map); + create_mapping(&map); + } else { + /* This better cover the entire kernel */ + if (start < kernel_x_start) { + map.pfn = __phys_to_pfn(start); + map.virtual = __phys_to_virt(start); + map.length = kernel_x_start - start; + map.type = MT_MEMORY_RW; + + create_mapping(&map); + } + + map.pfn = __phys_to_pfn(kernel_x_start); + map.virtual = __phys_to_virt(kernel_x_start); + map.length = kernel_x_end - kernel_x_start; + map.type = MT_MEMORY_RWX; + + create_mapping(&map); + + if (kernel_x_end < end) { + map.pfn = __phys_to_pfn(kernel_x_end); + map.virtual = __phys_to_virt(kernel_x_end); + map.length = end - kernel_x_end; + map.type = MT_MEMORY_RW; + + create_mapping(&map); + } + } } } |