diff options
| author | Bin Meng | 2019-08-29 02:53:04 -0700 |
|---|---|---|
| committer | Bin Meng | 2019-09-10 14:19:39 +0800 |
| commit | f4c0030074544e8d3105bc9e4debb82e964ab126 (patch) | |
| tree | c0fa8a12d78de842b5917ba424e9523e088a530a /arch/x86 | |
| parent | d2860c0088cb8e0303547b2130dd237374e91fde (diff) | |
x86: qemu: Extract getting memory size to a separate routine
This extracts getting memory size logic in dram_init() to a separate
routine qemu_get_low_memory_size(). No functional changes.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Aiden Park <aiden.park@intel.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/cpu/qemu/dram.c | 9 | ||||
| -rw-r--r-- | arch/x86/include/asm/arch-qemu/qemu.h | 7 |
2 files changed, 14 insertions, 2 deletions
diff --git a/arch/x86/cpu/qemu/dram.c b/arch/x86/cpu/qemu/dram.c index 736c4c3ace3..c29b073d7c4 100644 --- a/arch/x86/cpu/qemu/dram.c +++ b/arch/x86/cpu/qemu/dram.c @@ -9,7 +9,7 @@ DECLARE_GLOBAL_DATA_PTR; -int dram_init(void) +u32 qemu_get_low_memory_size(void) { u32 ram; @@ -19,7 +19,12 @@ int dram_init(void) ram |= ((u32)inb(CMOS_DATA_PORT)) << 6; ram += 16 * 1024; - gd->ram_size = ram * 1024; + return ram * 1024; +} + +int dram_init(void) +{ + gd->ram_size = qemu_get_low_memory_size(); post_code(POST_DRAM); return 0; diff --git a/arch/x86/include/asm/arch-qemu/qemu.h b/arch/x86/include/asm/arch-qemu/qemu.h index 100eb8e6463..c98deb2cd2f 100644 --- a/arch/x86/include/asm/arch-qemu/qemu.h +++ b/arch/x86/include/asm/arch-qemu/qemu.h @@ -37,4 +37,11 @@ #define PMREGMISC 0x80 #define PMIOSE (1 << 0) +/** + * qemu_get_low_memory_size() - Get low memory size + * + * @return: size of memory below 4GiB + */ +u32 qemu_get_low_memory_size(void); + #endif /* _ARCH_QEMU_H_ */ |