diff options
Diffstat (limited to 'u-boot/board/amcc/redwood/init.S')
| -rw-r--r-- | u-boot/board/amcc/redwood/init.S | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/u-boot/board/amcc/redwood/init.S b/u-boot/board/amcc/redwood/init.S new file mode 100644 index 0000000..47f700b --- /dev/null +++ b/u-boot/board/amcc/redwood/init.S @@ -0,0 +1,78 @@ +/* + * (C) Copyright 2008 + * Feng Kan, Applied Micro Circuits Corp., fkan@amcc.com. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#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(0xff000000, SZ_16M, 0xff000000, 4, AC_RWX | SA_G) + + /* + * TLB entries for SDRAM are not needed on this platform. + * They are dynamically generated in the SPD DDR(2) detection + * routine. + */ + + /* Although 512 KB, map 256k at a time */ + tlbentry(CONFIG_SYS_ISRAM_BASE, SZ_256K, 0x00000000, 4, AC_RWX | SA_I) + tlbentry(CONFIG_SYS_ISRAM_BASE + 0x40000, SZ_256K, 0x00040000, 4, AC_RWX | SA_I) + + tlbentry(CONFIG_SYS_OPER_FLASH, SZ_16M, 0xE7000000, 4,AC_RWX | SA_IG) + + /* + * Peripheral base + */ + tlbentry(CONFIG_SYS_PERIPHERAL_BASE, SZ_16K, 0xEF600000, 4, AC_RW | SA_IG) + + tlbentry(CONFIG_SYS_PCIE0_XCFGBASE,SZ_16M, 0x00000000, 0xC, AC_RW | SA_IG) + tlbentry(CONFIG_SYS_PCIE1_XCFGBASE,SZ_16M, 0x10000000, 0xC, AC_RW | SA_IG) + tlbentry(CONFIG_SYS_PCIE2_XCFGBASE,SZ_16M, 0x20000000, 0xC, AC_RW | SA_IG) + + tlbentry(CONFIG_SYS_PCIE0_MEMBASE, SZ_256M, 0x00000000, 0xD, AC_RW | SA_IG) + tlbentry(CONFIG_SYS_PCIE1_MEMBASE, SZ_256M, 0x00000000, 0xE, AC_RW | SA_IG) + + tlbentry(CONFIG_SYS_PCIE0_REGBASE, SZ_64K, 0x30000000, 0xC, AC_RW | SA_IG) + tlbentry(CONFIG_SYS_PCIE1_REGBASE, SZ_64K, 0x30010000, 0xC, AC_RW | SA_IG) + tlbentry(CONFIG_SYS_PCIE2_REGBASE, SZ_64K, 0x30020000, 0xC, AC_RW | SA_IG) + tlbtab_end |