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| author | Masahiro Yamada <yamada.m@jp.panasonic.com> | 2015-01-19 22:30:23 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.m@jp.panasonic.com> | 2015-01-23 00:50:21 +0900 |
| commit | 061ae4c0bbe8df9aeedfa4a1e6a6dc122a4c157f (patch) | |
| tree | 263370dacf10c98df09925c82b12d4638609b879 /arch/arm/cpu/armv7/uniphier/init_page_table.S | |
| parent | 89a7c773eabf4a3f2c23c2df95501723fef5e5a7 (diff) | |
| download | talos-obmc-uboot-061ae4c0bbe8df9aeedfa4a1e6a6dc122a4c157f.tar.gz talos-obmc-uboot-061ae4c0bbe8df9aeedfa4a1e6a6dc122a4c157f.zip | |
ARM: UniPhier: describe init_page_table shorter
The assembly directive ".rept ... .endr" allows us to write the
init_page_table much shorter. To make things further simpler,
set the text and stack area as Normal Memory, and the other sections
as Device attribute.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Diffstat (limited to 'arch/arm/cpu/armv7/uniphier/init_page_table.S')
| -rw-r--r-- | arch/arm/cpu/armv7/uniphier/init_page_table.S | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/uniphier/init_page_table.S b/arch/arm/cpu/armv7/uniphier/init_page_table.S new file mode 100644 index 0000000000..2638bcd779 --- /dev/null +++ b/arch/arm/cpu/armv7/uniphier/init_page_table.S @@ -0,0 +1,26 @@ +#include <config.h> +#include <linux/linkage.h> + +/* page table */ +#define NR_SECTIONS 4096 +#define SECTION_SHIFT 20 +#define DEVICE 0x00002002 /* Non-shareable Device */ +#define NORMAL 0x0000000e /* Normal Memory Write-Back, No Write-Allocate */ + +#define TEXT_SECTION ((CONFIG_SPL_TEXT_BASE) >> (SECTION_SHIFT)) +#define STACK_SECTION ((CONFIG_SYS_INIT_SP_ADDR) >> (SECTION_SHIFT)) + + .section ".rodata" + .align 14 +ENTRY(init_page_table) + section = 0 + .rept NR_SECTIONS + .if section == TEXT_SECTION || section == STACK_SECTION + attr = NORMAL + .else + attr = DEVICE + .endif + .word (section << SECTION_SHIFT) | attr + section = section + 1 + .endr +END(init_page_table) |
