From: Stephen Warren Date: Mon, 5 Oct 2015 18:09:00 +0000 (-0600) Subject: armv8: allow custom MMU setup routines on ARMv8 X-Git-Url: http://git.dujemihanovic.xyz/img/static/gitweb.css?a=commitdiff_plain;h=3c6af3bad4f644e050f67146f4a6e177d5e39e76;p=u-boot.git armv8: allow custom MMU setup routines on ARMv8 In order for noncached_init() to operate correctly, SoCs must set up a custom page table with fine-grained (2MiB) sections, which can be configured from noncached_init(). This is currently performed by arch/arm/cpu/armv8/{fsl-lsch3,zynqmp}/cpu.c by cut/pasting and re-implementing mmu_setup, enable_caches(), etc. There are some other reasons for the duplication there though, such as enabling icache early, and enabling dcaching earlier with a different configuration. This change makes mmu_setup() a weak implementation, so that the MMU setup code can be replaced without having to duplicate other code that calls it. Signed-off-by: Stephen Warren --- diff --git a/arch/arm/cpu/armv8/cache_v8.c b/arch/arm/cpu/armv8/cache_v8.c index b1ea8227cb..1ece6a2c12 100644 --- a/arch/arm/cpu/armv8/cache_v8.c +++ b/arch/arm/cpu/armv8/cache_v8.c @@ -32,7 +32,7 @@ inline void set_pgtable_table(u64 *page_table, u64 index, u64 *table_addr) } /* to activate the MMU we need to set up virtual memory */ -static void mmu_setup(void) +__weak void mmu_setup(void) { bd_t *bd = gd->bd; u64 *page_table = (u64 *)gd->arch.tlb_addr, i, j;