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https://github.com/u-boot/u-boot.git
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Introduce generic pre-relocation board_f.c
This file handles common pre-relocation init for boards which use the generic framework. It starts up the console, DRAM, performs relocation and then jumps to post-relocation init. Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Wolfgang Denk <wd@denx.de> Acked-by: Wolfgang Denk <wd@denx.de>
This commit is contained in:
Simon Glass
Tom Rini
parent
a6741bce50
commit
1938f4a5b6
7 changed files with 591 additions and 6 deletions
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@ -219,7 +219,7 @@ static void do_init_loop(init_fnc_t **init_fnc_ptr)
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void board_init_f(ulong boot_flags)
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{
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gd->fdt_blob = gd->arch.new_fdt = NULL;
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gd->fdt_blob = gd->new_fdt = NULL;
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gd->flags = boot_flags;
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do_init_loop(init_sequence_f);
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@ -111,7 +111,7 @@ int calculate_relocation_address(void)
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*/
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if (gd->fdt_blob) {
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dest_addr -= fdt_size;
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gd->arch.new_fdt = (void *)dest_addr;
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gd->new_fdt = (void *)dest_addr;
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dest_addr &= ~15;
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}
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#endif
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@ -49,15 +49,15 @@ int copy_uboot_to_ram(void)
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int copy_fdt_to_ram(void)
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{
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if (gd->arch.new_fdt) {
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if (gd->new_fdt) {
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ulong fdt_size;
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fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
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memcpy(gd->arch.new_fdt, gd->fdt_blob, fdt_size);
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memcpy(gd->new_fdt, gd->fdt_blob, fdt_size);
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debug("Relocated fdt from %p to %p, size %lx\n",
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gd->fdt_blob, gd->arch.new_fdt, fdt_size);
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gd->fdt_blob = gd->arch.new_fdt;
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gd->fdt_blob, gd->new_fdt, fdt_size);
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gd->fdt_blob = gd->new_fdt;
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}
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return 0;
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@ -36,6 +36,9 @@ COBJS-y += s_record.o
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COBJS-y += xyzModem.o
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COBJS-y += cmd_disk.o
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# boards
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COBJS-$(CONFIG_SYS_GENERIC_BOARD) += board_f.o
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# core command
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COBJS-y += cmd_boot.o
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COBJS-$(CONFIG_CMD_BOOTM) += cmd_bootm.o
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579
common/board_f.c
Normal file
579
common/board_f.c
Normal file
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@ -0,0 +1,579 @@
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/*
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* Copyright (c) 2011 The Chromium OS Authors.
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* (C) Copyright 2002-2006
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.de>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <linux/compiler.h>
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#include <version.h>
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#include <environment.h>
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#include <fdtdec.h>
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#include <initcall.h>
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#include <logbuff.h>
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#include <post.h>
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#include <asm/io.h>
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#include <asm/sections.h>
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#include <linux/compiler.h>
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/*
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* Pointer to initial global data area
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*
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* Here we initialize it if needed.
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*/
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#ifdef XTRN_DECLARE_GLOBAL_DATA_PTR
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#undef XTRN_DECLARE_GLOBAL_DATA_PTR
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#define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
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DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR);
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#else
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DECLARE_GLOBAL_DATA_PTR;
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#endif
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/*
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* sjg: IMO this code should be
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* refactored to a single function, something like:
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*
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* void led_set_state(enum led_colour_t colour, int on);
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*/
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/************************************************************************
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* Coloured LED functionality
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************************************************************************
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* May be supplied by boards if desired
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*/
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inline void __coloured_LED_init(void) {}
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void coloured_LED_init(void)
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__attribute__((weak, alias("__coloured_LED_init")));
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inline void __red_led_on(void) {}
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void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
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inline void __red_led_off(void) {}
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void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
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inline void __green_led_on(void) {}
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void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
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inline void __green_led_off(void) {}
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void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
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inline void __yellow_led_on(void) {}
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void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
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inline void __yellow_led_off(void) {}
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void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
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inline void __blue_led_on(void) {}
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void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
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inline void __blue_led_off(void) {}
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void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
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/*
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* Why is gd allocated a register? Prior to reloc it might be better to
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* just pass it around to each function in this file?
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*
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* After reloc one could argue that it is hardly used and doesn't need
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* to be in a register. Or if it is it should perhaps hold pointers to all
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* global data for all modules, so that post-reloc we can avoid the massive
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* literal pool we get on ARM. Or perhaps just encourage each module to use
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* a structure...
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*/
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/*
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* Could the CONFIG_SPL_BUILD infection become a flag in gd?
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*/
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static int init_baud_rate(void)
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{
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gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
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return 0;
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}
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static int display_text_info(void)
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{
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ulong bss_start, bss_end;
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bss_start = _bss_start_ofs + _TEXT_BASE;
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bss_end = _bss_end_ofs + _TEXT_BASE;
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debug("U-Boot code: %08X -> %08lX BSS: -> %08lX\n",
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CONFIG_SYS_TEXT_BASE, bss_start, bss_end);
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#ifdef CONFIG_MODEM_SUPPORT
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debug("Modem Support enabled\n");
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#endif
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#ifdef CONFIG_USE_IRQ
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debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
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debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
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#endif
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return 0;
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}
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static int announce_dram_init(void)
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{
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puts("DRAM: ");
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return 0;
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}
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static int show_dram_config(void)
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{
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ulong size;
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#ifdef CONFIG_NR_DRAM_BANKS
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int i;
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debug("\nRAM Configuration:\n");
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for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
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size += gd->bd->bi_dram[i].size;
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debug("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
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#ifdef DEBUG
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print_size(gd->bd->bi_dram[i].size, "\n");
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#endif
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}
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debug("\nDRAM: ");
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#else
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size = gd->ram_size;
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#endif
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print_size(size, "\n");
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return 0;
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}
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void __dram_init_banksize(void)
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{
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#if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
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gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
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gd->bd->bi_dram[0].size = get_effective_memsize();
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#endif
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}
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void dram_init_banksize(void)
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__attribute__((weak, alias("__dram_init_banksize")));
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static int zero_global_data(void)
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{
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memset((void *)gd, '\0', sizeof(gd_t));
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return 0;
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}
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static int setup_mon_len(void)
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{
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gd->mon_len = _bss_end_ofs;
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return 0;
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}
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__weak int arch_cpu_init(void)
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{
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return 0;
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}
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static int setup_fdt(void)
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{
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#ifdef CONFIG_OF_EMBED
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/* Get a pointer to the FDT */
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gd->fdt_blob = _binary_dt_dtb_start;
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#elif defined CONFIG_OF_SEPARATE
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/* FDT is at end of image */
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gd->fdt_blob = (void *)(_end_ofs + CONFIG_SYS_TEXT_BASE);
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#endif
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/* Allow the early environment to override the fdt address */
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gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
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(uintptr_t)gd->fdt_blob);
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return 0;
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}
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/* Get the top of usable RAM */
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__weak ulong board_get_usable_ram_top(ulong total_size)
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{
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return gd->ram_top;
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}
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static int setup_dest_addr(void)
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{
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debug("Monitor len: %08lX\n", gd->mon_len);
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/*
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* Ram is setup, size stored in gd !!
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*/
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debug("Ram size: %08lX\n", (ulong)gd->ram_size);
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#if defined(CONFIG_SYS_MEM_TOP_HIDE)
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/*
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* Subtract specified amount of memory to hide so that it won't
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* get "touched" at all by U-Boot. By fixing up gd->ram_size
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* the Linux kernel should now get passed the now "corrected"
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* memory size and won't touch it either. This should work
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* for arch/ppc and arch/powerpc. Only Linux board ports in
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* arch/powerpc with bootwrapper support, that recalculate the
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* memory size from the SDRAM controller setup will have to
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* get fixed.
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*/
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gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
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#endif
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#ifdef CONFIG_SYS_SDRAM_BASE
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gd->ram_top = CONFIG_SYS_SDRAM_BASE;
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#endif
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gd->ram_top = board_get_usable_ram_top(gd->mon_len);
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gd->dest_addr = gd->ram_top;
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debug("Ram top: %08lX\n", (ulong)gd->ram_top);
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gd->dest_addr_sp = gd->dest_addr;
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return 0;
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}
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#if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
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static int reserve_logbuffer(void)
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{
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/* reserve kernel log buffer */
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gd->dest_addr -= LOGBUFF_RESERVE;
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debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
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gd->dest_addr);
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return 0;
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}
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#endif
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#ifdef CONFIG_PRAM
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/* reserve protected RAM */
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static int reserve_pram(void)
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{
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ulong reg;
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reg = getenv_ulong("pram", 10, CONFIG_PRAM);
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gd->dest_addr -= (reg << 10); /* size is in kB */
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debug("Reserving %ldk for protected RAM at %08lx\n", reg,
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gd->dest_addr);
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return 0;
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}
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#endif /* CONFIG_PRAM */
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/* Round memory pointer down to next 4 kB limit */
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static int reserve_round_4k(void)
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{
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gd->dest_addr &= ~(4096 - 1);
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return 0;
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}
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#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
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defined(CONFIG_ARM)
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static int reserve_mmu(void)
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{
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/* reserve TLB table */
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gd->arch.tlb_size = 4096 * 4;
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gd->dest_addr -= gd->arch.tlb_size;
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/* round down to next 64 kB limit */
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gd->dest_addr &= ~(0x10000 - 1);
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gd->arch.tlb_addr = gd->dest_addr;
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debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
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gd->arch.tlb_addr + gd->arch.tlb_size);
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return 0;
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}
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#endif
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#ifdef CONFIG_LCD
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static int reserve_lcd(void)
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{
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#ifdef CONFIG_FB_ADDR
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gd->fb_base = CONFIG_FB_ADDR;
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#else
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/* reserve memory for LCD display (always full pages) */
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gd->dest_addr = lcd_setmem(gd->dest_addr);
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gd->fb_base = gd->dest_addr;
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#endif /* CONFIG_FB_ADDR */
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return 0;
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}
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#endif /* CONFIG_LCD */
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static int reserve_uboot(void)
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{
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/*
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* reserve memory for U-Boot code, data & bss
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* round down to next 4 kB limit
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*/
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gd->dest_addr -= gd->mon_len;
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gd->dest_addr &= ~(4096 - 1);
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debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10,
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gd->dest_addr);
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return 0;
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}
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/* reserve memory for malloc() area */
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static int reserve_malloc(void)
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{
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gd->dest_addr_sp = gd->dest_addr - TOTAL_MALLOC_LEN;
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debug("Reserving %dk for malloc() at: %08lx\n",
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TOTAL_MALLOC_LEN >> 10, gd->dest_addr_sp);
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return 0;
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}
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/* (permanently) allocate a Board Info struct */
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static int reserve_board(void)
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{
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gd->dest_addr_sp -= sizeof(bd_t);
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gd->bd = (bd_t *)gd->dest_addr_sp;
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memset(gd->bd, '\0', sizeof(bd_t));
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debug("Reserving %zu Bytes for Board Info at: %08lx\n",
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sizeof(bd_t), gd->dest_addr_sp);
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return 0;
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}
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static int setup_machine(void)
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{
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#ifdef CONFIG_MACH_TYPE
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gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
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#endif
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return 0;
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}
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static int reserve_global_data(void)
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{
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gd->dest_addr_sp -= sizeof(gd_t);
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gd->new_gd = (gd_t *)gd->dest_addr_sp;
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debug("Reserving %zu Bytes for Global Data at: %08lx\n",
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sizeof(gd_t), gd->dest_addr_sp);
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return 0;
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}
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static int reserve_fdt(void)
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{
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/*
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* If the device tree is sitting immediate above our image then we
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* must relocate it. If it is embedded in the data section, then it
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* will be relocated with other data.
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*/
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if (gd->fdt_blob) {
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gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
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gd->dest_addr_sp -= gd->fdt_size;
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gd->new_fdt = (void *)gd->dest_addr_sp;
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debug("Reserving %lu Bytes for FDT at: %p\n",
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gd->fdt_size, gd->new_fdt);
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}
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return 0;
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}
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static int reserve_stacks(void)
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{
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/* setup stack pointer for exceptions */
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gd->dest_addr_sp -= 16;
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gd->dest_addr_sp &= ~0xf;
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gd->irq_sp = gd->dest_addr_sp;
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/*
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* Handle architecture-specific things here
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* TODO(sjg@chromium.org): Perhaps create arch_reserve_stack()
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* to handle this and put in arch/xxx/lib/stack.c
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*/
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# ifdef CONFIG_ARM
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# ifdef CONFIG_USE_IRQ
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gd->dest_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
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debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
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CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->dest_addr_sp);
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/* 8-byte alignment for ARM ABI compliance */
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gd->dest_addr_sp &= ~0x07;
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# endif
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/* leave 3 words for abort-stack, plus 1 for alignment */
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gd->dest_addr_sp -= 16;
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return 0;
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}
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static int display_new_sp(void)
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{
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debug("New Stack Pointer is: %08lx\n", gd->dest_addr_sp);
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||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_POST
|
||||
static int init_post(void)
|
||||
{
|
||||
post_bootmode_init();
|
||||
post_run(NULL, POST_ROM | post_bootmode_get(0));
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
static int setup_baud_rate(void)
|
||||
{
|
||||
/* Ick, can we get rid of this line? */
|
||||
gd->bd->bi_baudrate = gd->baudrate;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int setup_dram_config(void)
|
||||
{
|
||||
/* Ram is board specific, so move it to board code ... */
|
||||
dram_init_banksize();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int reloc_fdt(void)
|
||||
{
|
||||
if (gd->new_fdt) {
|
||||
memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
|
||||
gd->fdt_blob = gd->new_fdt;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int setup_reloc(void)
|
||||
{
|
||||
gd->relocaddr = gd->dest_addr;
|
||||
gd->start_addr_sp = gd->dest_addr_sp;
|
||||
gd->reloc_off = gd->dest_addr - CONFIG_SYS_TEXT_BASE;
|
||||
memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
|
||||
|
||||
debug("Relocation Offset is: %08lx\n", gd->reloc_off);
|
||||
debug("Relocating to %08lx, new gd at %p, sp at %08lx\n",
|
||||
gd->dest_addr, gd->new_gd, gd->dest_addr_sp);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* ARM calls relocate_code from its crt0.S */
|
||||
#if !defined(CONFIG_ARM)
|
||||
|
||||
static int jump_to_copy(void)
|
||||
{
|
||||
relocate_code(gd->dest_addr_sp, gd->new_gd, gd->dest_addr);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Record the board_init_f() bootstage (after arch_cpu_init()) */
|
||||
static int mark_bootstage(void)
|
||||
{
|
||||
bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static init_fnc_t init_sequence_f[] = {
|
||||
setup_fdt,
|
||||
setup_mon_len,
|
||||
arch_cpu_init, /* basic arch cpu dependent setup */
|
||||
mark_bootstage,
|
||||
#ifdef CONFIG_OF_CONTROL
|
||||
fdtdec_check_fdt,
|
||||
#endif
|
||||
#if defined(CONFIG_BOARD_EARLY_INIT_F)
|
||||
board_early_init_f,
|
||||
#endif
|
||||
timer_init, /* initialize timer */
|
||||
#ifdef CONFIG_BOARD_POSTCLK_INIT
|
||||
board_postclk_init,
|
||||
#endif
|
||||
#ifdef CONFIG_FSL_ESDHC
|
||||
get_clocks,
|
||||
#endif
|
||||
env_init, /* initialize environment */
|
||||
init_baud_rate, /* initialze baudrate settings */
|
||||
serial_init, /* serial communications setup */
|
||||
console_init_f, /* stage 1 init of console */
|
||||
display_options, /* say that we are here */
|
||||
display_text_info, /* show debugging info if required */
|
||||
#if defined(CONFIG_DISPLAY_CPUINFO)
|
||||
print_cpuinfo, /* display cpu info (and speed) */
|
||||
#endif
|
||||
#if defined(CONFIG_DISPLAY_BOARDINFO)
|
||||
checkboard, /* display board info */
|
||||
#endif
|
||||
announce_dram_init,
|
||||
/* TODO: unify all these dram functions? */
|
||||
#ifdef CONFIG_ARM
|
||||
dram_init, /* configure available RAM banks */
|
||||
#endif
|
||||
#ifdef CONFIG_POST
|
||||
init_post,
|
||||
#endif
|
||||
/*
|
||||
* Now that we have DRAM mapped and working, we can
|
||||
* relocate the code and continue running from DRAM.
|
||||
*
|
||||
* Reserve memory at end of RAM for (top down in that order):
|
||||
* - area that won't get touched by U-Boot and Linux (optional)
|
||||
* - kernel log buffer
|
||||
* - protected RAM
|
||||
* - LCD framebuffer
|
||||
* - monitor code
|
||||
* - board info struct
|
||||
*/
|
||||
setup_dest_addr,
|
||||
#if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
|
||||
reserve_logbuffer,
|
||||
#endif
|
||||
#ifdef CONFIG_PRAM
|
||||
reserve_pram,
|
||||
#endif
|
||||
reserve_round_4k,
|
||||
#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
|
||||
defined(CONFIG_ARM)
|
||||
reserve_mmu,
|
||||
#endif
|
||||
#ifdef CONFIG_LCD
|
||||
reserve_lcd,
|
||||
#endif
|
||||
reserve_uboot,
|
||||
reserve_malloc,
|
||||
reserve_board,
|
||||
setup_machine,
|
||||
reserve_global_data,
|
||||
reserve_fdt,
|
||||
reserve_stacks,
|
||||
setup_dram_config,
|
||||
show_dram_config,
|
||||
setup_baud_rate,
|
||||
display_new_sp,
|
||||
reloc_fdt,
|
||||
setup_reloc,
|
||||
#ifndef CONFIG_ARM
|
||||
jump_to_copy,
|
||||
#endif
|
||||
NULL,
|
||||
};
|
||||
|
||||
void board_init_f(ulong boot_flags)
|
||||
{
|
||||
gd_t data;
|
||||
|
||||
gd = &data;
|
||||
|
||||
gd->flags = boot_flags;
|
||||
|
||||
if (initcall_run_list(init_sequence_f))
|
||||
hang();
|
||||
|
||||
#ifndef CONFIG_ARM
|
||||
/* NOTREACHED - jump_to_copy() does not return */
|
||||
hang();
|
||||
#endif
|
||||
}
|
||||
|
||||
void hang(void)
|
||||
{
|
||||
puts("### ERROR ### Please RESET the board ###\n");
|
||||
for (;;);
|
||||
}
|
||||
|
|
@ -81,6 +81,8 @@ typedef struct global_data {
|
|||
unsigned long reloc_off;
|
||||
struct global_data *new_gd; /* relocated global data */
|
||||
const void *fdt_blob; /* Our device tree, NULL if none */
|
||||
void *new_fdt; /* Relocated FDT */
|
||||
unsigned long fdt_size; /* Space reserved for relocated FDT */
|
||||
void **jt; /* jump table */
|
||||
char env_buf[32]; /* buffer for getenv() before reloc. */
|
||||
struct arch_global_data arch; /* architecture-specific data */
|
||||
|
|
|
|||
|
|
@ -311,6 +311,7 @@ extern ulong monitor_flash_len;
|
|||
int mac_read_from_eeprom(void);
|
||||
extern u8 _binary_dt_dtb_start[]; /* embedded device tree blob */
|
||||
int set_cpu_clk_info(void);
|
||||
int print_cpuinfo(void);
|
||||
|
||||
/**
|
||||
* Show the DRAM size in a board-specific way
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue