diff options
Diffstat (limited to 'qemu/roms/u-boot/board/gdsys/gdppc440etx/init.S')
-rw-r--r-- | qemu/roms/u-boot/board/gdsys/gdppc440etx/init.S | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/board/gdsys/gdppc440etx/init.S b/qemu/roms/u-boot/board/gdsys/gdppc440etx/init.S new file mode 100644 index 000000000..2db84b59a --- /dev/null +++ b/qemu/roms/u-boot/board/gdsys/gdppc440etx/init.S @@ -0,0 +1,59 @@ +/* +* (C) Copyright 2008 +* Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de +* +* based on board/amcc/yosemite/init.S +* original Copyright not specified there + * SPDX-License-Identifier: GPL-2.0+ +*/ + +#include <asm-offsets.h> +#include <ppc_asm.tmpl> +#include <config.h> + +#include <asm/mmu.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( CONFIG_SYS_BOOT_BASE_ADDR, SZ_256M, CONFIG_SYS_BOOT_BASE_ADDR, + 0, AC_RWX | SA_G/*|SA_I*/) + + /* TLB-entry for init-ram in dcache (SA_I must be turned off!) */ + tlbentry( CONFIG_SYS_INIT_RAM_ADDR, SZ_64K, CONFIG_SYS_INIT_RAM_ADDR, + 0, AC_RWX | SA_G ) + + tlbentry( CONFIG_SYS_SDRAM_BASE, SZ_256M, CONFIG_SYS_SDRAM_BASE, + 0, AC_RWX | SA_IG ) + tlbentry( CONFIG_SYS_PCI_BASE, SZ_256M, CONFIG_SYS_PCI_BASE, + 0, AC_RW | SA_IG ) + + /* PCI */ + tlbentry( CONFIG_SYS_PCI_MEMBASE, SZ_256M, CONFIG_SYS_PCI_MEMBASE, + 0, AC_RW | SA_IG ) + tlbentry( CONFIG_SYS_PCI_MEMBASE1, SZ_256M, CONFIG_SYS_PCI_MEMBASE1, + 0, AC_RW | SA_IG ) + tlbentry( CONFIG_SYS_PCI_MEMBASE2, SZ_256M, CONFIG_SYS_PCI_MEMBASE2, + 0, AC_RW | SA_IG ) + tlbentry( CONFIG_SYS_PCI_MEMBASE3, SZ_256M, CONFIG_SYS_PCI_MEMBASE3, + 0, AC_RW | SA_IG ) + + tlbtab_end |