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>master
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#include <config.h> |
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#include <linux/linkage.h> |
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/* page table */ |
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#define NR_SECTIONS 4096 |
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#define SECTION_SHIFT 20 |
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#define DEVICE 0x00002002 /* Non-shareable Device */ |
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#define NORMAL 0x0000000e /* Normal Memory Write-Back, No Write-Allocate */ |
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#define TEXT_SECTION ((CONFIG_SPL_TEXT_BASE) >> (SECTION_SHIFT)) |
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#define STACK_SECTION ((CONFIG_SYS_INIT_SP_ADDR) >> (SECTION_SHIFT)) |
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.section ".rodata" |
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.align 14
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ENTRY(init_page_table) |
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section = 0 |
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.rept NR_SECTIONS
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.if section == TEXT_SECTION || section == STACK_SECTION |
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attr = NORMAL |
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.else |
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attr = DEVICE |
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.endif |
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.word (section << SECTION_SHIFT) | attr |
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section = section + 1 |
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.endr |
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END(init_page_table) |
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