diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/arch/arm/Kconfig | 1 | ||||
| -rw-r--r-- | src/arch/arm/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/arch/arm/armv4/Kconfig | 11 | ||||
| -rw-r--r-- | src/arch/arm/armv4/Makefile.inc | 63 | ||||
| -rw-r--r-- | src/arch/arm/armv4/bootblock.S | 98 | ||||
| -rw-r--r-- | src/arch/arm/armv4/bootblock_simple.c | 43 | ||||
| -rw-r--r-- | src/arch/arm/armv4/cache.c | 81 | ||||
| -rw-r--r-- | src/arch/arm/include/armv4/arch/arch_io.h | 58 | ||||
| -rw-r--r-- | src/arch/arm/include/armv4/arch/cache.h | 94 |
9 files changed, 450 insertions, 1 deletions
diff --git a/src/arch/arm/Kconfig b/src/arch/arm/Kconfig index 050cd62a20..7ec5812417 100644 --- a/src/arch/arm/Kconfig +++ b/src/arch/arm/Kconfig @@ -11,6 +11,7 @@ config ARCH_RAMSTAGE_ARM bool default n +source src/arch/arm/armv4/Kconfig source src/arch/arm/armv7/Kconfig # If a custom bootblock is necessary, this option should be "select"-ed by diff --git a/src/arch/arm/Makefile.inc b/src/arch/arm/Makefile.inc index 8838edfd46..09f2fd3f5b 100644 --- a/src/arch/arm/Makefile.inc +++ b/src/arch/arm/Makefile.inc @@ -23,7 +23,7 @@ ############################################################################### # Take care of subdirectories ############################################################################### -subdirs-y += armv7/ +subdirs-y += armv4/ armv7/ ############################################################################### # ARM specific options diff --git a/src/arch/arm/armv4/Kconfig b/src/arch/arm/armv4/Kconfig new file mode 100644 index 0000000000..e40a6e1af9 --- /dev/null +++ b/src/arch/arm/armv4/Kconfig @@ -0,0 +1,11 @@ +config ARCH_BOOTBLOCK_ARMV4 + def_bool n + select ARCH_BOOTBLOCK_ARM + +config ARCH_ROMSTAGE_ARMV4 + def_bool n + select ARCH_ROMSTAGE_ARM + +config ARCH_RAMSTAGE_ARMV4 + def_bool n + select ARCH_RAMSTAGE_ARM diff --git a/src/arch/arm/armv4/Makefile.inc b/src/arch/arm/armv4/Makefile.inc new file mode 100644 index 0000000000..d054b31e4e --- /dev/null +++ b/src/arch/arm/armv4/Makefile.inc @@ -0,0 +1,63 @@ +################################################################################ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2013 The ChromiumOS Authors +## +## 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; version 2 of the License. +## +## 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## +############################################################################### + +armv4_flags = -marm -march=armv4t -I$(src)/arch/arm/include/armv4/ + +############################################################################### +# bootblock +############################################################################### + +ifeq ($(CONFIG_ARCH_BOOTBLOCK_ARMV4),y) + +ifneq ($(CONFIG_ARM_BOOTBLOCK_CUSTOM),y) +bootblock-y += bootblock.S +bootblock-y += bootblock_simple.c +endif + +bootblock-y += cache.c + +CFLAGS_bootblock += $(armv4_flags) +CPPFLAGS_bootblock += $(armv4_flags) + +endif # CONFIG_ARCH_BOOTBLOCK_ARMV4 + +############################################################################### +# romstage +############################################################################### + +ifeq ($(CONFIG_ARCH_ROMSTAGE_ARMV4),y) + + +CFLAGS_romstage += $(armv4_flags) +CPPFLAGS_romstage += $(armv4_flags) + +endif # CONFIG_ARCH_ROMSTAGE_ARMV4 + +############################################################################### +# ramstage +############################################################################### + +ifeq ($(CONFIG_ARCH_RAMSTAGE_ARMV4),y) + +CFLAGS_ramstage += $(armv4_flags) +CPPFLAGS_ramstage += $(armv4_flags) + +endif # CONFIG_ARCH_RAMSTAGE_ARMV4 diff --git a/src/arch/arm/armv4/bootblock.S b/src/arch/arm/armv4/bootblock.S new file mode 100644 index 0000000000..5f7de13ee3 --- /dev/null +++ b/src/arch/arm/armv4/bootblock.S @@ -0,0 +1,98 @@ +/* + * Early initialization code for ARM architecture. + * + * This file is based off of the OMAP3530/ARM Cortex start.S file from Das + * U-Boot, which itself got the file from armboot. + * + * Copyright (c) 2004 Texas Instruments <r-woodruff2@ti.com> + * Copyright (c) 2001 Marius Gröger <mag@sysgo.de> + * Copyright (c) 2002 Alex Züpke <azu@sysgo.de> + * Copyright (c) 2002 Gary Jennejohn <garyj@denx.de> + * Copyright (c) 2003 Richard Woodruff <r-woodruff2@ti.com> + * Copyright (c) 2003 Kshitij <kshitij@ti.com> + * Copyright (c) 2006-2008 Syed Mohammed Khasim <x0khasim@ti.com> + * Copyright (c) 2013 The Chromium OS Authors + * + * 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; version 2 of + * the License. + * + * 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 + */ + +.section ".start", "a", %progbits +.globl _start +_start: b reset + .balignl 16,0xdeadbeef + +_cbfs_master_header: + /* The CBFS master header is inserted by cbfstool at the first + * aligned offset after the above anchor string is found. + * Hence, we leave some space for it. + */ + .skip 128 @ Assumes 64-byte alignment + +reset: + /* + * Set the cpu to System mode with IRQ and FIQ disabled. Prefetch/Data + * aborts may happen early and crash before the abort handlers are + * installed, but at least the problem will show up near the code that + * causes it. + */ + msr cpsr_cxf, #0xdf + + /* + * Initialize the stack to a known value. This is used to check for + * stack overflow later in the boot process. + */ + ldr r0, .Stack + ldr r1, .Stack_size + sub r0, r0, r1 + ldr r1, .Stack + ldr r2, =0xdeadbeef +init_stack_loop: + str r2, [r0] + add r0, #4 + cmp r0, r1 + bne init_stack_loop + +/* Set stackpointer in internal RAM to call board_init_f */ +call_bootblock: + ldr sp, .Stack /* Set up stack pointer */ + ldr r0,=0x00000000 + /* + * The current design of cpu_info places the + * struct at the top of the stack. The number of + * words pushed must be at least as large as that + * struct. + */ + push {r0-r2} + bic sp, sp, #7 /* 8-byte alignment for ABI compliance */ + /* + * Use "bl" instead of "b" even though we do not intend to return. + * "bl" gets compiled to "blx" if we're transitioning from ARM to + * Thumb. However, "b" will not and GCC may attempt to create a + * wrapper which is currently broken. + */ + bl main + +/* we do it this way because it's a 32-bit constant and + * in some cases too far away to be loaded as just an offset + * from IP + */ +.align 2 +.Stack: + .word CONFIG_STACK_TOP +.align 2 +/* create this size the same way we do in coreboot_ram.ld: top-bottom */ +.Stack_size: + .word CONFIG_STACK_TOP - CONFIG_STACK_BOTTOM diff --git a/src/arch/arm/armv4/bootblock_simple.c b/src/arch/arm/armv4/bootblock_simple.c new file mode 100644 index 0000000000..9917dbb5aa --- /dev/null +++ b/src/arch/arm/armv4/bootblock_simple.c @@ -0,0 +1,43 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2010 Google Inc. + * + * 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; version 2 of + * the License. + * + * 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., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + */ + +#include <arch/hlt.h> +#include <arch/stages.h> +#include <bootblock_common.h> +#include <cbfs.h> +#include <console/console.h> + +void main(void) +{ + const char *stage_name = "fallback/romstage"; + void *entry; + + bootblock_cpu_init(); + bootblock_mainboard_init(); + + if (CONFIG_BOOTBLOCK_CONSOLE) + console_init(); + + entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, stage_name); + + if (entry) stage_exit(entry); + hlt(); +} diff --git a/src/arch/arm/armv4/cache.c b/src/arch/arm/armv4/cache.c new file mode 100644 index 0000000000..729b82c411 --- /dev/null +++ b/src/arch/arm/armv4/cache.c @@ -0,0 +1,81 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2013 Google Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * cache.c: Cache maintenance routines for ARMv7-A and ARMv7-R + * + * Reference: ARM Architecture Reference Manual, ARMv7-A and ARMv7-R edition + */ + +#include <stdint.h> + +#include <arch/cache.h> + +void tlb_invalidate_all(void) +{ +} + +void icache_invalidate_all(void) +{ +} + +void dcache_clean_all(void) +{ +} + +void dcache_clean_invalidate_all(void) +{ +} + +void dcache_invalidate_all(void) +{ +} + +void dcache_clean_by_mva(void const *addr, size_t len) +{ +} + +void dcache_clean_invalidate_by_mva(void const *addr, size_t len) +{ +} + +void dcache_invalidate_by_mva(void const *addr, size_t len) +{ +} + +void dcache_mmu_disable(void) +{ +} + + +void dcache_mmu_enable(void) +{ +} + +void arm_invalidate_caches(void) +{ +} diff --git a/src/arch/arm/include/armv4/arch/arch_io.h b/src/arch/arm/include/armv4/arch/arch_io.h new file mode 100644 index 0000000000..72653da3f3 --- /dev/null +++ b/src/arch/arm/include/armv4/arch/arch_io.h @@ -0,0 +1,58 @@ +/* + * Originally imported from linux/include/asm-arm/io.h. This file has changed + * substantially since then. + * + * Copyright 2013 Google Inc. + * Copyright (C) 1996-2000 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Modifications: + * 08-Apr-2013 G Replaced several macros with inlines for type safety. + * 16-Sep-1996 RMK Inlined the inx/outx functions & optimised for both + * constant addresses and variable addresses. + * 04-Dec-1997 RMK Moved a lot of this stuff to the new architecture + * specific IO header files. + * 27-Mar-1999 PJB Second parameter of memcpy_toio is const.. + * 04-Apr-1999 PJB Added check_signature. + * 12-Dec-1999 RMK More cleanups + * 18-Jun-2000 RMK Removed virt_to_* and friends definitions + */ +#ifndef __ASM_ARM_ARCH_IO_H +#define __ASM_ARM_ARCH_IO_H + +#include <stdint.h> + +static inline uint8_t read8(const void *addr) +{ + return *(volatile uint8_t *)addr; +} + +static inline uint16_t read16(const void *addr) +{ + return *(volatile uint16_t *)addr; +} + +static inline uint32_t read32(const void *addr) +{ + return *(volatile uint32_t *)addr; +} + +static inline void write8(uint8_t val, void *addr) +{ + *(volatile uint8_t *)addr = val; +} + +static inline void write16(uint16_t val, void *addr) +{ + *(volatile uint16_t *)addr = val; +} + +static inline void write32(uint32_t val, void *addr) +{ + *(volatile uint32_t *)addr = val; +} + +#endif /* __ASM_ARM_ARCH_IO_H */ diff --git a/src/arch/arm/include/armv4/arch/cache.h b/src/arch/arm/include/armv4/arch/cache.h new file mode 100644 index 0000000000..db4379a4c0 --- /dev/null +++ b/src/arch/arm/include/armv4/arch/cache.h @@ -0,0 +1,94 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2013 Google Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * cache.h: Cache maintenance API for ARM + */ + +#ifndef ARM_CACHE_H +#define ARM_CACHE_H + +#include <config.h> +#include <stddef.h> +#include <stdint.h> + +/* + * Cache maintenance API + */ + +/* dcache clean and invalidate all (on current level given by CCSELR) */ +void dcache_clean_invalidate_all(void); + +/* dcache clean by modified virtual address to PoC */ +void dcache_clean_by_mva(void const *addr, size_t len); + +/* dcache clean and invalidate by modified virtual address to PoC */ +void dcache_clean_invalidate_by_mva(void const *addr, size_t len); + +/* dcache invalidate by modified virtual address to PoC */ +void dcache_invalidate_by_mva(void const *addr, size_t len); + +void dcache_clean_all(void); + +/* dcache invalidate all (on current level given by CCSELR) */ +void dcache_invalidate_all(void); + +/* dcache and MMU disable */ +void dcache_mmu_disable(void); + +/* dcache and MMU enable */ +void dcache_mmu_enable(void); + +/* icache invalidate all (on current level given by CSSELR) */ +void icache_invalidate_all(void); + +/* tlb invalidate all */ +void tlb_invalidate_all(void); + +/* + * Generalized setup/init functions + */ + +/* invalidate all caches on ARM */ +void arm_invalidate_caches(void); + +/* mmu initialization (set page table address, set permissions, etc) */ +void mmu_init(void); + +enum dcache_policy { + DCACHE_OFF, + DCACHE_WRITEBACK, + DCACHE_WRITETHROUGH, +}; + +/* disable the mmu for a range. Primarily useful to lock out address 0. */ +void mmu_disable_range(unsigned long start_mb, unsigned long size_mb); +/* mmu range configuration (set dcache policy) */ +void mmu_config_range(unsigned long start_mb, unsigned long size_mb, + enum dcache_policy policy); + +#endif /* ARM_CACHE_H */ |