diff options
Diffstat (limited to 'qemu/roms/u-boot/board/esd/du440/init.S')
| -rw-r--r-- | qemu/roms/u-boot/board/esd/du440/init.S | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/board/esd/du440/init.S b/qemu/roms/u-boot/board/esd/du440/init.S new file mode 100644 index 000000000..ab4b6ceda --- /dev/null +++ b/qemu/roms/u-boot/board/esd/du440/init.S @@ -0,0 +1,66 @@ +/* + * (C) Copyright 2008 + * Matthias Fuchs, esd gmbh, matthias.fuchs@esd-electronics.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <asm-offsets.h> +#include <ppc_asm.tmpl> +#include <asm/mmu.h> +#include <config.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, 1, AC_RWX | SA_G ) + +#ifdef CONFIG_SYS_INIT_RAM_DCACHE + /* 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 ) +#endif + + /* TLB-entry for PCI Memory */ + tlbentry( CONFIG_SYS_PCI_MEMBASE, SZ_256M, CONFIG_SYS_PCI_MEMBASE, 1, AC_RW | SA_IG ) + tlbentry( CONFIG_SYS_PCI_MEMBASE1, SZ_256M, CONFIG_SYS_PCI_MEMBASE1, 1, AC_RW | SA_IG ) + tlbentry( CONFIG_SYS_PCI_MEMBASE2, SZ_256M, CONFIG_SYS_PCI_MEMBASE2, 1, AC_RW | SA_IG ) + tlbentry( CONFIG_SYS_PCI_MEMBASE3, SZ_256M, CONFIG_SYS_PCI_MEMBASE3, 1, AC_RW | SA_IG ) + + /* TLB-entry for PCI IO */ + tlbentry( CONFIG_SYS_PCI_IOBASE, SZ_64K, CONFIG_SYS_PCI_IOBASE, 1, AC_RW | SA_IG ) + + /* TLB-entries for EBC: CPLD, DUMEM, DUIO */ + tlbentry( CONFIG_SYS_CPLD_BASE, SZ_1K, CONFIG_SYS_CPLD_BASE, 1, AC_RWX | SA_IG ) + tlbentry( CONFIG_SYS_DUMEM_BASE, SZ_1M, CONFIG_SYS_DUMEM_BASE, 1, AC_RWX | SA_IG ) + tlbentry( CONFIG_SYS_DUIO_BASE, SZ_64K, CONFIG_SYS_DUIO_BASE, 1, AC_RWX | SA_IG ) + + /* TLB-entry for NAND */ + tlbentry( CONFIG_SYS_NAND0_ADDR, SZ_1K, CONFIG_SYS_NAND0_ADDR, 1, AC_RWX | SA_IG ) + tlbentry( CONFIG_SYS_NAND1_ADDR, SZ_1K, CONFIG_SYS_NAND1_ADDR, 1, AC_RWX | SA_IG ) + + /* TLB-entry for Internal Registers & OCM */ + tlbentry( 0xe0000000, SZ_16M, 0xe0000000, 0, AC_RWX | SA_I ) + + /* TLB-entry PCI registers */ + tlbentry( 0xEEC00000, SZ_1K, 0xEEC00000, 1, AC_RWX | SA_IG ) + + /* TLB-entry for peripherals */ + tlbentry( 0xEF000000, SZ_16M, 0xEF000000, 1, AC_RWX | SA_IG) + + tlbtab_end |