microsoft
/
WSL2-Linux-Kernel
зеркало из https://github.com/microsoft/WSL2-Linux-Kernel.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность

ARM: EXYNOS: Fixups for big-endian operation 

If the kernel is built big endian, then using the __raw read and write IO
accessors is not going to work as they end up writing big-endian data to
little-endian IO registers. Fix this by using the readl and writel relaxed
versions which ensure little endian IO.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
This commit is contained in:
Ben Dooks 2016-06-21 11:20:24 +01:00 коммит произвёл Krzysztof Kozlowski
Родитель f4c24f36c3
Коммит 458ad21df1
3 изменённых файлов: 14 добавлений и 11 удалений
Показать статистику Скачать Patch файл Скачать Diff файл Показать все файлы Свернуть все файлы

18
arch/arm/mach-exynos/firmware.c
Просмотреть файл

@ -41,9 +41,9 @@ static int exynos_do_idle(unsigned long mode)
case FW_DO_IDLE_AFTR: case FW_DO_IDLE_AFTR:
if (read_cpuid_part() == ARM_CPU_PART_CORTEX_A9) if (read_cpuid_part() == ARM_CPU_PART_CORTEX_A9)
exynos_save_cp15(); exynos_save_cp15();
__raw_writel(virt_to_phys(exynos_cpu_resume_ns), writel_relaxed(virt_to_phys(exynos_cpu_resume_ns),
sysram_ns_base_addr + 0x24); sysram_ns_base_addr + 0x24);
__raw_writel(EXYNOS_AFTR_MAGIC, sysram_ns_base_addr + 0x20); writel_relaxed(EXYNOS_AFTR_MAGIC, sysram_ns_base_addr + 0x20);
if (soc_is_exynos3250()) { if (soc_is_exynos3250()) {
flush_cache_all(); flush_cache_all();
exynos_smc(SMC_CMD_SAVE, OP_TYPE_CORE, exynos_smc(SMC_CMD_SAVE, OP_TYPE_CORE,
@ -97,7 +97,7 @@ static int exynos_set_cpu_boot_addr(int cpu, unsigned long boot_addr)
if (soc_is_exynos4412()) if (soc_is_exynos4412())
boot_reg += 4 * cpu; boot_reg += 4 * cpu;
__raw_writel(boot_addr, boot_reg); writel_relaxed(boot_addr, boot_reg);
return 0; return 0;
} }
@ -113,7 +113,7 @@ static int exynos_get_cpu_boot_addr(int cpu, unsigned long *boot_addr)
if (soc_is_exynos4412()) if (soc_is_exynos4412())
boot_reg += 4 * cpu; boot_reg += 4 * cpu;
*boot_addr = __raw_readl(boot_reg); *boot_addr = readl_relaxed(boot_reg);
return 0; return 0;
} }
@ -234,20 +234,20 @@ void exynos_set_boot_flag(unsigned int cpu, unsigned int mode)
{ {
unsigned int tmp; unsigned int tmp;
tmp = __raw_readl(REG_CPU_STATE_ADDR + cpu * 4); tmp = readl_relaxed(REG_CPU_STATE_ADDR + cpu * 4);
if (mode & BOOT_MODE_MASK) if (mode & BOOT_MODE_MASK)
tmp &= ~BOOT_MODE_MASK; tmp &= ~BOOT_MODE_MASK;
tmp |= mode; tmp |= mode;
__raw_writel(tmp, REG_CPU_STATE_ADDR + cpu * 4); writel_relaxed(tmp, REG_CPU_STATE_ADDR + cpu * 4);
} }
void exynos_clear_boot_flag(unsigned int cpu, unsigned int mode) void exynos_clear_boot_flag(unsigned int cpu, unsigned int mode)
{ {
unsigned int tmp; unsigned int tmp;
tmp = __raw_readl(REG_CPU_STATE_ADDR + cpu * 4); tmp = readl_relaxed(REG_CPU_STATE_ADDR + cpu * 4);
tmp &= ~mode; tmp &= ~mode;
__raw_writel(tmp, REG_CPU_STATE_ADDR + cpu * 4); writel_relaxed(tmp, REG_CPU_STATE_ADDR + cpu * 4);
} }

3
arch/arm/mach-exynos/headsmp.S
Просмотреть файл

@ -12,12 +12,15 @@
#include <linux/linkage.h> #include <linux/linkage.h>
#include <linux/init.h> #include <linux/init.h>
#include <asm/assembler.h>
/* /*
* exynos4 specific entry point for secondary CPUs. This provides * exynos4 specific entry point for secondary CPUs. This provides
* a "holding pen" into which all secondary cores are held until we're * a "holding pen" into which all secondary cores are held until we're
* ready for them to initialise. * ready for them to initialise.
*/ */
ENTRY(exynos4_secondary_startup) ENTRY(exynos4_secondary_startup)
ARM_BE8(setend be)
mrc p15, 0, r0, c0, c0, 5 mrc p15, 0, r0, c0, c0, 5
and r0, r0, #15 and r0, r0, #15
adr r4, 1f adr r4, 1f

4
arch/arm/mach-exynos/platsmp.c
Просмотреть файл

@ -264,7 +264,7 @@ int exynos_set_boot_addr(u32 core_id, unsigned long boot_addr)
ret = PTR_ERR(boot_reg); ret = PTR_ERR(boot_reg);
goto fail; goto fail;
} }
__raw_writel(boot_addr, boot_reg); writel_relaxed(boot_addr, boot_reg);
ret = 0; ret = 0;
} }
fail: fail:
@ -289,7 +289,7 @@ int exynos_get_boot_addr(u32 core_id, unsigned long *boot_addr)
ret = PTR_ERR(boot_reg); ret = PTR_ERR(boot_reg);
goto fail; goto fail;
} }
*boot_addr = __raw_readl(boot_reg); *boot_addr = readl_relaxed(boot_reg);
ret = 0; ret = 0;
} }
fail: fail: