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[ARM] 3059/1: fix XIP support 

Patch from Nicolas Pitre

Fix XIP support after recent bootmem code refactoring.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
hifive-unleashed-5.1
Nicolas Pitre 2005-10-29 16:28:29 +01:00 committed by Russell King
parent b4a1f67fbf
commit 1a47ebc0d9
1 changed files with 19 additions and 11 deletions
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30
arch/arm/mm/init.c
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@ -363,20 +363,16 @@ static void __init bootmem_init(struct meminfo *mi)
memcpy(&meminfo, mi, sizeof(meminfo));
#ifdef CONFIG_XIP_KERNEL
#error needs fixing
p->pfn = __phys_to_pfn(CONFIG_XIP_PHYS_ADDR & PMD_MASK);
p->virtual = (unsigned long)&_stext & PMD_MASK;
p->length = ((unsigned long)&_etext - p->virtual + ~PMD_MASK) & PMD_MASK;
p->type = MT_ROM;
p ++;
#endif
/*
* Clear out all the mappings below the kernel image.
* FIXME: what about XIP?
*/
for (addr = 0; addr < PAGE_OFFSET; addr += PGDIR_SIZE)
for (addr = 0; addr < MODULE_START; addr += PGDIR_SIZE)
pmd_clear(pmd_off_k(addr));
#ifdef CONFIG_XIP_KERNEL
/* The XIP kernel is mapped in the module area -- skip over it */
addr = ((unsigned long)&_etext + PGDIR_SIZE - 1) & PGDIR_MASK;
#endif
for ( ; addr < PAGE_OFFSET; addr += PGDIR_SIZE)
pmd_clear(pmd_off_k(addr));
/*
@ -435,6 +431,18 @@ static void __init devicemaps_init(struct machine_desc *mdesc)
for (addr = VMALLOC_END; addr; addr += PGDIR_SIZE)
pmd_clear(pmd_off_k(addr));
/*
* Map the kernel if it is XIP.
* It is always first in the modulearea.
*/
#ifdef CONFIG_XIP_KERNEL
map.pfn = __phys_to_pfn(CONFIG_XIP_PHYS_ADDR & PGDIR_MASK);
map.virtual = MODULE_START;
map.length = ((unsigned long)&_etext - map.virtual + ~PGDIR_MASK) & PGDIR_MASK;
map.type = MT_ROM;
create_mapping(&map);
#endif
/*
* Map the cache flushing regions.
*/