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| author | fishsoupisgood <github@madingley.org> | 2019-04-29 01:17:54 +0100 |
|---|---|---|
| committer | fishsoupisgood <github@madingley.org> | 2019-05-27 03:43:43 +0100 |
| commit | 3f2546b2ef55b661fd8dd69682b38992225e86f6 (patch) | |
| tree | 65ca85f13617aee1dce474596800950f266a456c /roms/u-boot/board/amcc/ebony/init.S | |
| download | qemu-master.tar.gz qemu-master.tar.bz2 qemu-master.zip | |
Diffstat (limited to 'roms/u-boot/board/amcc/ebony/init.S')
| -rw-r--r-- | roms/u-boot/board/amcc/ebony/init.S | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/roms/u-boot/board/amcc/ebony/init.S b/roms/u-boot/board/amcc/ebony/init.S new file mode 100644 index 00000000..904e6489 --- /dev/null +++ b/roms/u-boot/board/amcc/ebony/init.S @@ -0,0 +1,41 @@ +/* +* Copyright (C) 2002 Scott McNutt <smcnutt@artesyncp.com> + * SPDX-License-Identifier: GPL-2.0+ +*/ + +#include <ppc_asm.tmpl> +#include <config.h> +#include <asm/mmu.h> +#include <asm/ppc4xx.h> + +/************************************************************************** + * TLB TABLE + * + * This table is used by the cpu boot code to setup the initial tlb + * entries. Rather than make broad assumptions in the cpu source tree, + * this table lets each board set things up however they like. + * + * Pointer to the table is returned in r1 + * + *************************************************************************/ + + .section .bootpg,"ax" + .globl tlbtab + +tlbtab: + tlbtab_start + + tlbentry(0xf0000000, SZ_256M, 0xf0000000, 1, AC_RWX | SA_IG) + + /* + * TLB entries for SDRAM are not needed on this platform. + * They are dynamically generated in the SPD DDR(2) detection + * routine. + */ + + tlbentry(CONFIG_SYS_PERIPHERAL_BASE, SZ_256M, 0x40000000, 1, AC_RW | SA_IG) + tlbentry(CONFIG_SYS_ISRAM_BASE, SZ_4K, 0x80000000, 0, AC_RWX) + tlbentry(CONFIG_SYS_ISRAM_BASE + 0x1000, SZ_4K, 0x80001000, 0, AC_RWX) + tlbentry(CONFIG_SYS_PCI_BASE, SZ_256M, 0x00000000, 2, AC_RW | SA_IG) + tlbentry(CONFIG_SYS_PCI_MEMBASE, SZ_256M, 0x00000000, 3, AC_RW | SA_IG) + tlbtab_end |