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author | Tom Rini <trini@konsulko.com> | 2015-11-10 18:38:08 (GMT) |
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committer | Tom Rini <trini@konsulko.com> | 2015-11-10 18:38:08 (GMT) |
commit | cad04990715f7eaecd45196e84cf10e9e3248dae (patch) | |
tree | 269c3c01ad2134c69d7a7d42585baac9f091a837 /arch | |
parent | 7ff15aca1a5bbfcf2dfbc18ec7b031c482851f69 (diff) | |
parent | 5e68ff3949a3eebf62ba639171814f39c8e46a84 (diff) | |
download | u-boot-cad04990715f7eaecd45196e84cf10e9e3248dae.tar.xz |
Merge branch 'master' of git://git.denx.de/u-boot-arm
Diffstat (limited to 'arch')
-rw-r--r-- | arch/arm/Kconfig | 5 | ||||
-rw-r--r-- | arch/arm/cpu/arm926ejs/Makefile | 11 | ||||
-rw-r--r-- | arch/arm/cpu/arm926ejs/cache.c | 5 | ||||
-rw-r--r-- | arch/arm/cpu/armv7m/stm32f4/flash.c | 5 | ||||
-rw-r--r-- | arch/arm/cpu/armv8/cache_v8.c | 2 | ||||
-rw-r--r-- | arch/arm/include/asm/arch-stm32f4/stm32.h | 1 | ||||
-rw-r--r-- | arch/arm/include/asm/cache.h | 4 | ||||
-rw-r--r-- | arch/arm/include/asm/system.h | 11 | ||||
-rw-r--r-- | arch/arm/lib/Makefile | 24 | ||||
-rw-r--r-- | arch/arm/lib/cache.c | 11 | ||||
-rw-r--r-- | arch/arm/lib/memcpy.S | 4 | ||||
-rw-r--r-- | arch/arm/lib/memset.S | 2 | ||||
-rw-r--r-- | arch/arm/lib/semihosting.c | 6 | ||||
-rw-r--r-- | arch/arm/mach-kirkwood/Kconfig | 4 | ||||
-rw-r--r-- | arch/arm/mach-kirkwood/Makefile | 6 | ||||
-rw-r--r-- | arch/arm/mach-orion5x/Makefile | 10 | ||||
-rw-r--r-- | arch/arm/mach-tegra/Makefile | 1 | ||||
-rw-r--r-- | arch/arm/mach-tegra/arm64-mmu.c | 131 | ||||
-rw-r--r-- | arch/arm/thumb1/include/asm/proc-armv/system.h | 69 |
19 files changed, 300 insertions, 12 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 0d756cb..5ab0254 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -10,6 +10,9 @@ config ARM64 config HAS_VBAR bool +config HAS_THUMB2 + bool + config CPU_ARM720T bool @@ -32,9 +35,11 @@ config CPU_ARM1176 config CPU_V7 bool select HAS_VBAR + select HAS_THUMB2 config CPU_V7M bool + select HAS_THUMB2 config CPU_PXA bool diff --git a/arch/arm/cpu/arm926ejs/Makefile b/arch/arm/cpu/arm926ejs/Makefile index 63fa159..fe78922 100644 --- a/arch/arm/cpu/arm926ejs/Makefile +++ b/arch/arm/cpu/arm926ejs/Makefile @@ -20,3 +20,14 @@ obj-$(CONFIG_MX25) += mx25/ obj-$(CONFIG_MX27) += mx27/ obj-$(if $(filter mxs,$(SOC)),y) += mxs/ obj-$(if $(filter spear,$(SOC)),y) += spear/ + +# some files can only build in ARM or THUMB2, not THUMB1 + +ifdef CONFIG_SYS_THUMB_BUILD +ifndef CONFIG_HAS_THUMB2 + +CFLAGS_cpu.o := -marm +CFLAGS_cache.o := -marm + +endif +endif diff --git a/arch/arm/cpu/arm926ejs/cache.c b/arch/arm/cpu/arm926ejs/cache.c index e5c1a6a..2839c86 100644 --- a/arch/arm/cpu/arm926ejs/cache.c +++ b/arch/arm/cpu/arm926ejs/cache.c @@ -82,4 +82,9 @@ void flush_dcache_all(void) /* * Stub implementations for l2 cache operations */ + __weak void l2_cache_disable(void) {} + +#if defined CONFIG_SYS_THUMB_BUILD +__weak void invalidate_l2_cache(void) {} +#endif diff --git a/arch/arm/cpu/armv7m/stm32f4/flash.c b/arch/arm/cpu/armv7m/stm32f4/flash.c index e5c6111..dd058bd 100644 --- a/arch/arm/cpu/armv7m/stm32f4/flash.c +++ b/arch/arm/cpu/armv7m/stm32f4/flash.c @@ -97,6 +97,9 @@ int flash_erase(flash_info_t *info, int first, int last) while (readl(&STM32_FLASH->sr) & STM32_FLASH_SR_BSY) ; + /* clear old sector number before writing a new one */ + clrbits_le32(&STM32_FLASH->cr, STM32_FLASH_CR_SNB_MASK); + if (bank == 0) { setbits_le32(&STM32_FLASH->cr, (i << STM32_FLASH_CR_SNB_OFFSET)); @@ -114,9 +117,9 @@ int flash_erase(flash_info_t *info, int first, int last) ; clrbits_le32(&STM32_FLASH->cr, STM32_FLASH_CR_SER); - stm32f4_flash_lock(1); } + stm32f4_flash_lock(1); return 0; } diff --git a/arch/arm/cpu/armv8/cache_v8.c b/arch/arm/cpu/armv8/cache_v8.c index b1ea822..1ece6a2 100644 --- a/arch/arm/cpu/armv8/cache_v8.c +++ b/arch/arm/cpu/armv8/cache_v8.c @@ -32,7 +32,7 @@ inline void set_pgtable_table(u64 *page_table, u64 index, u64 *table_addr) } /* to activate the MMU we need to set up virtual memory */ -static void mmu_setup(void) +__weak void mmu_setup(void) { bd_t *bd = gd->bd; u64 *page_table = (u64 *)gd->arch.tlb_addr, i, j; diff --git a/arch/arm/include/asm/arch-stm32f4/stm32.h b/arch/arm/include/asm/arch-stm32f4/stm32.h index 3ed3801..7ca6dc3 100644 --- a/arch/arm/include/asm/arch-stm32f4/stm32.h +++ b/arch/arm/include/asm/arch-stm32f4/stm32.h @@ -104,6 +104,7 @@ struct stm32_flash_regs { #define STM32_FLASH_CR_STRT (1 << 16) #define STM32_FLASH_CR_LOCK (1 << 31) #define STM32_FLASH_CR_SNB_OFFSET 3 +#define STM32_FLASH_CR_SNB_MASK (15 << STM32_FLASH_CR_SNB_OFFSET) enum clock { CLOCK_CORE, diff --git a/arch/arm/include/asm/cache.h b/arch/arm/include/asm/cache.h index a836e9f..1f63127 100644 --- a/arch/arm/include/asm/cache.h +++ b/arch/arm/include/asm/cache.h @@ -16,6 +16,9 @@ /* * Invalidate L2 Cache using co-proc instruction */ +#ifdef CONFIG_SYS_THUMB_BUILD +void invalidate_l2_cache(void); +#else static inline void invalidate_l2_cache(void) { unsigned int val=0; @@ -24,6 +27,7 @@ static inline void invalidate_l2_cache(void) : : "r" (val) : "cc"); isb(); } +#endif void l2_cache_enable(void); void l2_cache_disable(void); diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h index cfc7834..71b3108 100644 --- a/arch/arm/include/asm/system.h +++ b/arch/arm/include/asm/system.h @@ -17,6 +17,7 @@ #define PGTABLE_SIZE (0x10000) /* 2MB granularity */ #define MMU_SECTION_SHIFT 21 +#define MMU_SECTION_SIZE (1 << MMU_SECTION_SHIFT) #ifndef __ASSEMBLY__ @@ -278,11 +279,6 @@ enum { */ void mmu_page_table_flush(unsigned long start, unsigned long stop); -#ifdef CONFIG_SYS_NONCACHED_MEMORY -void noncached_init(void); -phys_addr_t noncached_alloc(size_t size, size_t align); -#endif /* CONFIG_SYS_NONCACHED_MEMORY */ - #endif /* __ASSEMBLY__ */ #define arch_align_stack(x) (x) @@ -302,6 +298,11 @@ phys_addr_t noncached_alloc(size_t size, size_t align); void mmu_set_region_dcache_behaviour(phys_addr_t start, size_t size, enum dcache_option option); +#ifdef CONFIG_SYS_NONCACHED_MEMORY +void noncached_init(void); +phys_addr_t noncached_alloc(size_t size, size_t align); +#endif /* CONFIG_SYS_NONCACHED_MEMORY */ + #endif /* __ASSEMBLY__ */ #endif diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile index 2bdfaba..f3db7b5 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile @@ -60,3 +60,27 @@ obj-$(CONFIG_DEBUG_LL) += debug.o ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS))) extra-y += eabi_compat.o endif + +# some files can only build in ARM or THUMB2, not THUMB1 + +ifdef CONFIG_SYS_THUMB_BUILD +ifndef CONFIG_HAS_THUMB2 + +# for C files, just apend -marm, which will override previous -mthumb* + +CFLAGS_cache.o := -marm +CFLAGS_cache-cp15.o := -marm + +# For .S, drop -mthumb* and other thumb-related options. +# CFLAGS_REMOVE_* would not have an effet, so AFLAGS_REMOVE_* +# was implemented and is used here. +# Also, define ${target}_NO_THUMB_BUILD for these two targets +# so that the code knows it should not use Thumb. + +AFLAGS_REMOVE_memset.o := -mthumb -mthumb-interwork +AFLAGS_REMOVE_memcpy.o := -mthumb -mthumb-interwork +AFLAGS_memset.o := -DMEMSET_NO_THUMB_BUILD +AFLAGS_memcpy.o := -DMEMCPY_NO_THUMB_BUILD + +endif +endif diff --git a/arch/arm/lib/cache.c b/arch/arm/lib/cache.c index cd13db3..3bd8710 100644 --- a/arch/arm/lib/cache.c +++ b/arch/arm/lib/cache.c @@ -88,3 +88,14 @@ phys_addr_t noncached_alloc(size_t size, size_t align) return next; } #endif /* CONFIG_SYS_NONCACHED_MEMORY */ + +#if defined(CONFIG_SYS_THUMB_BUILD) +void invalidate_l2_cache(void) +{ + unsigned int val = 0; + + asm volatile("mcr p15, 1, %0, c15, c11, 0 @ invl l2 cache" + : : "r" (val) : "cc"); + isb(); +} +#endif diff --git a/arch/arm/lib/memcpy.S b/arch/arm/lib/memcpy.S index eeaf003..7d9fc0f 100644 --- a/arch/arm/lib/memcpy.S +++ b/arch/arm/lib/memcpy.S @@ -13,7 +13,7 @@ #include <linux/linkage.h> #include <asm/assembler.h> -#ifdef CONFIG_SYS_THUMB_BUILD +#if defined(CONFIG_SYS_THUMB_BUILD) && !defined(MEMCPY_NO_THUMB_BUILD) #define W(instr) instr.w #else #define W(instr) instr @@ -62,7 +62,7 @@ /* Prototype: void *memcpy(void *dest, const void *src, size_t n); */ .syntax unified -#ifdef CONFIG_SYS_THUMB_BUILD +#if defined(CONFIG_SYS_THUMB_BUILD) && !defined(MEMCPY_NO_THUMB_BUILD) .thumb .thumb_func #endif diff --git a/arch/arm/lib/memset.S b/arch/arm/lib/memset.S index 7208f20..df053a3 100644 --- a/arch/arm/lib/memset.S +++ b/arch/arm/lib/memset.S @@ -16,7 +16,7 @@ .align 5 .syntax unified -#ifdef CONFIG_SYS_THUMB_BUILD +#if defined(CONFIG_SYS_THUMB_BUILD) && !defined(MEMSET_NO_THUMB_BUILD) .thumb .thumb_func #endif diff --git a/arch/arm/lib/semihosting.c b/arch/arm/lib/semihosting.c index c3e964e..e32ad90 100644 --- a/arch/arm/lib/semihosting.c +++ b/arch/arm/lib/semihosting.c @@ -31,6 +31,8 @@ static noinline long smh_trap(unsigned int sysnum, void *addr) register long result asm("r0"); #if defined(CONFIG_ARM64) asm volatile ("hlt #0xf000" : "=r" (result) : "0"(sysnum), "r"(addr)); +#elif defined(CONFIG_CPU_V7M) + asm volatile ("bkpt #0xAB" : "=r" (result) : "0"(sysnum), "r"(addr)); #else /* Note - untested placeholder */ asm volatile ("svc #0x123456" : "=r" (result) : "0"(sysnum), "r"(addr)); @@ -90,7 +92,7 @@ static long smh_read(long fd, void *memp, size_t len) size_t len; } read; - debug("%s: fd %ld, memp %p, len %lu\n", __func__, fd, memp, len); + debug("%s: fd %ld, memp %p, len %zu\n", __func__, fd, memp, len); read.fd = fd; read.memp = memp; @@ -104,7 +106,7 @@ static long smh_read(long fd, void *memp, size_t len) * hard to maintain partial read loops and such, just fail * with an error message. */ - printf("%s: ERROR ret %ld, fd %ld, len %lu memp %p\n", + printf("%s: ERROR ret %ld, fd %ld, len %zu memp %p\n", __func__, ret, fd, len, memp); return -1; } diff --git a/arch/arm/mach-kirkwood/Kconfig b/arch/arm/mach-kirkwood/Kconfig index aab5d19..f7737bf 100644 --- a/arch/arm/mach-kirkwood/Kconfig +++ b/arch/arm/mach-kirkwood/Kconfig @@ -4,6 +4,9 @@ choice prompt "Marvell Kirkwood board select" optional +config TARGET_OPENRD + bool "Marvell OpenRD Board" + config TARGET_DREAMPLUG bool "DreamPlug Board" @@ -51,6 +54,7 @@ endchoice config SYS_SOC default "kirkwood" +source "board/Marvell/openrd/Kconfig" source "board/Marvell/dreamplug/Kconfig" source "board/Marvell/guruplug/Kconfig" source "board/Marvell/sheevaplug/Kconfig" diff --git a/arch/arm/mach-kirkwood/Makefile b/arch/arm/mach-kirkwood/Makefile index df4756e..5abcf70 100644 --- a/arch/arm/mach-kirkwood/Makefile +++ b/arch/arm/mach-kirkwood/Makefile @@ -9,3 +9,9 @@ obj-y = cpu.o obj-y += cache.o obj-y += mpp.o + +# cpu.o and cache.o contain CP15 instructions which cannot be run in +# Thumb state, so build them for ARM state even with CONFIG_SYS_THUMB_BUILD + +CFLAGS_cpu.o := -marm +CFLAGS_cache.o := -marm diff --git a/arch/arm/mach-orion5x/Makefile b/arch/arm/mach-orion5x/Makefile index 546ebcb..33dcad4 100644 --- a/arch/arm/mach-orion5x/Makefile +++ b/arch/arm/mach-orion5x/Makefile @@ -16,3 +16,13 @@ obj-y += timer.o ifndef CONFIG_SKIP_LOWLEVEL_INIT obj-y += lowlevel_init.o endif + +# some files can only build in ARM or THUMB2, not THUMB1 + +ifdef CONFIG_SYS_THUMB_BUILD +ifndef CONFIG_HAS_THUMB2 + +CFLAGS_cpu.o := -marm + +endif +endif diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile index 75924ad..98431a9 100644 --- a/arch/arm/mach-tegra/Makefile +++ b/arch/arm/mach-tegra/Makefile @@ -15,6 +15,7 @@ obj-$(CONFIG_CMD_ENTERRCM) += cmd_enterrcm.o obj-$(CONFIG_PWM_TEGRA) += pwm.o endif +obj-$(CONFIG_ARM64) += arm64-mmu.o obj-y += ap.o obj-y += board.o board2.o obj-y += cache.o diff --git a/arch/arm/mach-tegra/arm64-mmu.c b/arch/arm/mach-tegra/arm64-mmu.c new file mode 100644 index 0000000..c227652 --- /dev/null +++ b/arch/arm/mach-tegra/arm64-mmu.c @@ -0,0 +1,131 @@ +/* + * (C) Copyright 2014 - 2015 Xilinx, Inc. + * Michal Simek <michal.simek@xilinx.com> + * (This file derived from arch/arm/cpu/armv8/zynqmp/cpu.c) + * + * Copyright (c) 2015, NVIDIA CORPORATION. All rights reserved. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/system.h> +#include <asm/armv8/mmu.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define SECTION_SHIFT_L1 30UL +#define SECTION_SHIFT_L2 21UL +#define BLOCK_SIZE_L0 0x8000000000UL +#define BLOCK_SIZE_L1 (1 << SECTION_SHIFT_L1) +#define BLOCK_SIZE_L2 (1 << SECTION_SHIFT_L2) + +#define TCR_TG1_4K (1 << 31) +#define TCR_EPD1_DISABLE (1 << 23) +#define TEGRA_VA_BITS 40 +#define TEGRA_TCR TCR_TG1_4K | \ + TCR_EPD1_DISABLE | \ + TCR_SHARED_OUTER | \ + TCR_SHARED_INNER | \ + TCR_IRGN_WBWA | \ + TCR_ORGN_WBWA | \ + TCR_T0SZ(TEGRA_VA_BITS) + +#define MEMORY_ATTR PMD_SECT_AF | PMD_SECT_INNER_SHARE | \ + PMD_ATTRINDX(MT_NORMAL) | \ + PMD_TYPE_SECT +#define DEVICE_ATTR PMD_SECT_AF | PMD_SECT_PXN | \ + PMD_SECT_UXN | PMD_ATTRINDX(MT_DEVICE_NGNRNE) | \ + PMD_TYPE_SECT + +/* 4K size is required to place 512 entries in each level */ +#define TLB_TABLE_SIZE 0x1000 + +/* + * This mmu table looks as below + * Level 0 table contains two entries to 512GB sizes. One is Level1 Table 0 + * and other Level1 Table1. + * Level1 Table0 contains entries for each 1GB from 0 to 511GB. + * Level1 Table1 contains entries for each 1GB from 512GB to 1TB. + * Level2 Table0, Level2 Table1, Level2 Table2 and Level2 Table3 contains + * entries for each 2MB starting from 0GB, 1GB, 2GB and 3GB respectively. + */ +void mmu_setup(void) +{ + int el; + u64 i, section_l1t0, section_l1t1; + u64 section_l2t0, section_l2t1, section_l2t2, section_l2t3; + u64 *level0_table = (u64 *)gd->arch.tlb_addr; + u64 *level1_table_0 = (u64 *)(gd->arch.tlb_addr + TLB_TABLE_SIZE); + u64 *level1_table_1 = (u64 *)(gd->arch.tlb_addr + (2 * TLB_TABLE_SIZE)); + u64 *level2_table_0 = (u64 *)(gd->arch.tlb_addr + (3 * TLB_TABLE_SIZE)); + u64 *level2_table_1 = (u64 *)(gd->arch.tlb_addr + (4 * TLB_TABLE_SIZE)); + u64 *level2_table_2 = (u64 *)(gd->arch.tlb_addr + (5 * TLB_TABLE_SIZE)); + u64 *level2_table_3 = (u64 *)(gd->arch.tlb_addr + (6 * TLB_TABLE_SIZE)); + + /* Invalidate all table entries */ + memset(level0_table, 0, PGTABLE_SIZE); + + level0_table[0] = + (u64)level1_table_0 | PMD_TYPE_TABLE; + level0_table[1] = + (u64)level1_table_1 | PMD_TYPE_TABLE; + + /* + * set level 1 table 0, covering 0 to 512GB + * set level 1 table 1, covering 512GB to 1TB + */ + section_l1t0 = 0; + section_l1t1 = BLOCK_SIZE_L0; + + for (i = 0; i < 512; i++) { + level1_table_0[i] = section_l1t0; + if (i >= 4) + level1_table_0[i] |= MEMORY_ATTR; + level1_table_1[i] = section_l1t1; + level1_table_1[i] |= MEMORY_ATTR; + section_l1t0 += BLOCK_SIZE_L1; + section_l1t1 += BLOCK_SIZE_L1; + } + + level1_table_0[0] = + (u64)level2_table_0 | PMD_TYPE_TABLE; + level1_table_0[1] = + (u64)level2_table_1 | PMD_TYPE_TABLE; + level1_table_0[2] = + (u64)level2_table_2 | PMD_TYPE_TABLE; + level1_table_0[3] = + (u64)level2_table_3 | PMD_TYPE_TABLE; + + section_l2t0 = 0; + section_l2t1 = section_l2t0 + BLOCK_SIZE_L1; /* 1GB */ + section_l2t2 = section_l2t1 + BLOCK_SIZE_L1; /* 2GB */ + section_l2t3 = section_l2t2 + BLOCK_SIZE_L1; /* 3GB */ + + for (i = 0; i < 512; i++) { + level2_table_0[i] = section_l2t0 | DEVICE_ATTR; + level2_table_1[i] = section_l2t1 | DEVICE_ATTR; + level2_table_2[i] = section_l2t2 | MEMORY_ATTR; + level2_table_3[i] = section_l2t3 | MEMORY_ATTR; + section_l2t0 += BLOCK_SIZE_L2; + section_l2t1 += BLOCK_SIZE_L2; + section_l2t2 += BLOCK_SIZE_L2; + section_l2t3 += BLOCK_SIZE_L2; + } + + /* flush new MMU table */ + flush_dcache_range(gd->arch.tlb_addr, + gd->arch.tlb_addr + gd->arch.tlb_size); + + /* point TTBR to the new table */ + el = current_el(); + set_ttbr_tcr_mair(el, gd->arch.tlb_addr, + TEGRA_TCR, MEMORY_ATTRIBUTES); + + set_sctlr(get_sctlr() | CR_M); +} + +u64 *arch_get_page_table(void) +{ + return (u64 *)(gd->arch.tlb_addr + (3 * TLB_TABLE_SIZE)); +} diff --git a/arch/arm/thumb1/include/asm/proc-armv/system.h b/arch/arm/thumb1/include/asm/proc-armv/system.h new file mode 100644 index 0000000..7dfbf3d --- /dev/null +++ b/arch/arm/thumb1/include/asm/proc-armv/system.h @@ -0,0 +1,69 @@ +/* + * Thumb-1 drop-in for the linux/include/asm-arm/proc-armv/system.h + * + * (C) Copyright 2015 + * Albert ARIBAUD <albert.u.boot@aribaud.net> + * + * The original file does not build in Thumb mode. However, in U-Boot + * we don't use interrupt context, so we can redefine these as empty + * memory barriers, which makes Thumb-1 compiler happy. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* + * Use the same macro name as linux/include/asm-arm/proc-armv/system.h + * here, so that if the original ever gets included after us, it won't + * try to re-redefine anything. + */ + +#ifndef __ASM_PROC_SYSTEM_H +#define __ASM_PROC_SYSTEM_H + +/* + * Redefine all original macros with static inline functions containing + * a simple memory barrier, so that they produce the same instruction + * ordering constraints as their original counterparts. + * We use static inline functions rather than macros so that we can tell + * the compiler to not complain about unused arguments. + */ + +static inline void local_irq_save( + unsigned long flags __attribute__((unused))) +{ + __asm__ __volatile__ ("" : : : "memory"); +} + +static inline void local_irq_enable(void) +{ + __asm__ __volatile__ ("" : : : "memory"); +} + +static inline void local_irq_disable(void) +{ + __asm__ __volatile__ ("" : : : "memory"); +} + +static inline void __stf(void) +{ + __asm__ __volatile__ ("" : : : "memory"); +} + +static inline void __clf(void) +{ + __asm__ __volatile__ ("" : : : "memory"); +} + +static inline void local_save_flags( + unsigned long flags __attribute__((unused))) +{ + __asm__ __volatile__ ("" : : : "memory"); +} + +static inline void local_irq_restore( + unsigned long flags __attribute__((unused))) +{ + __asm__ __volatile__ ("" : : : "memory"); +} + +#endif /* __ASM_PROC_SYSTEM_H */ |