diff options
Diffstat (limited to 'roms/u-boot/board/amcc/luan/init.S')
| -rw-r--r-- | roms/u-boot/board/amcc/luan/init.S | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/roms/u-boot/board/amcc/luan/init.S b/roms/u-boot/board/amcc/luan/init.S new file mode 100644 index 00000000..0f4a78e1 --- /dev/null +++ b/roms/u-boot/board/amcc/luan/init.S @@ -0,0 +1,59 @@ +/* + * (C) Copyright 2007 + * Stefan Roese, DENX Software Engineering, sr@denx.de. + * + * 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 + + /* + * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the + * speed up boot process. It is patched after relocation to enable SA_I + */ + tlbentry(0xfff00000, SZ_1M, 0xfff00000, 1, AC_RWX | SA_G) + + tlbentry(0xffc00000, SZ_1M, 0xffc00000, 1, AC_RWX | SA_IG) + tlbentry(0xffd00000, SZ_1M, 0xffd00000, 1, AC_RWX | SA_IG) + tlbentry(0xffe00000, SZ_1M, 0xffe00000, 1, AC_RWX | SA_IG) + tlbentry(0xff900000, SZ_1M, 0xff900000, 1, AC_RWX | SA_IG) + tlbentry(CONFIG_SYS_EPLD_BASE, SZ_256K, 0xff000000, 1, AC_RW | SA_IG) + + /* + * TLB entries for SDRAM are not needed on this platform. + * They are dynamically generated in the SPD DDR(2) detection + * routine. + */ + + /* internal ram (l2 cache) */ + tlbentry(CONFIG_SYS_ISRAM_BASE, SZ_256K, 0x80000000, 0, AC_RWX | SA_I) + + /* peripherals at f0000000 */ + tlbentry(CONFIG_SYS_PERIPHERAL_BASE, SZ_4K, CONFIG_SYS_PERIPHERAL_BASE, 1, AC_RW | SA_IG) + + /* PCI */ + tlbentry(CONFIG_SYS_PCI_BASE, SZ_256M, 0x00000000, 9, AC_RW | SA_IG) + tlbentry(CONFIG_SYS_PCI_MEMBASE, SZ_256M, 0x10000000, 9, AC_RW | SA_IG) + tlbtab_end |