Add generic board support for sandbox. and remove the old board init code. Select CONFIG_SYS_GENERIC_BOARD for sandbox now that this is supported. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com>master
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/*
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* Copyright (c) 2011 The Chromium OS Authors. |
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* |
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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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/*
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* This file was taken from ARM and changed to remove things we don't |
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* need. This is most of it, so have tried to avoid being over-zealous! |
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* For example, we want to have an emulation of the 'DRAM' used by |
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* U-Boot. |
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* |
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* has been talk upstream of unifying the architectures w.r.t board.c, |
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* so the less change here the better. |
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*/ |
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#include <common.h> |
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#include <command.h> |
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#include <malloc.h> |
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#include <stdio_dev.h> |
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#include <timestamp.h> |
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#include <version.h> |
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#include <serial.h> |
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#include <os.h> |
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DECLARE_GLOBAL_DATA_PTR; |
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static gd_t gd_mem; |
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/************************************************************************
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* Init Utilities * |
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************************************************************************ |
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* Some of this code should be moved into the core functions, |
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* or dropped completely, |
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* but let's get it working (again) first... |
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*/ |
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static int display_banner(void) |
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{ |
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display_options(); |
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return 0; |
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} |
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/**
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* Configure and report on the DRAM configuration, which in our case is |
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* fairly simple. |
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*/ |
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static int display_dram_config(void) |
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{ |
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ulong size = 0; |
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int i; |
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debug("RAM Configuration:\n"); |
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for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { |
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#ifdef DEBUG |
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printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start); |
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print_size(gd->bd->bi_dram[i].size, "\n"); |
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#endif |
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size += gd->bd->bi_dram[i].size; |
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} |
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puts("DRAM: "); |
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print_size(size, "\n"); |
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return 0; |
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} |
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/*
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* Breathe some life into the board... |
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* |
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* Initialize a serial port as console, and carry out some hardware |
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* tests. |
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* |
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* The first part of initialization is running from Flash memory; |
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* its main purpose is to initialize the RAM so that we |
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* can relocate the monitor code to RAM. |
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*/ |
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/*
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* All attempts to come up with a "common" initialization sequence |
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* that works for all boards and architectures failed: some of the |
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* requirements are just _too_ different. To get rid of the resulting |
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* mess of board dependent #ifdef'ed code we now make the whole |
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* initialization sequence configurable to the user. |
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* |
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* The requirements for any new initalization function is simple: it |
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* receives a pointer to the "global data" structure as it's only |
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* argument, and returns an integer return code, where 0 means |
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* "continue" and != 0 means "fatal error, hang the system". |
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*/ |
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typedef int (init_fnc_t) (void); |
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void __dram_init_banksize(void) |
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{ |
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gd->bd->bi_dram[0].start = 0; |
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gd->bd->bi_dram[0].size = gd->ram_size; |
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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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init_fnc_t *init_sequence[] = { |
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#if defined(CONFIG_ARCH_CPU_INIT) |
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arch_cpu_init, /* basic arch cpu dependent setup */ |
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#endif |
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#if defined(CONFIG_BOARD_EARLY_INIT_F) |
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board_early_init_f, |
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#endif |
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timer_init, /* initialize timer */ |
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env_init, /* initialize environment */ |
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serial_init, /* serial communications setup */ |
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console_init_f, /* stage 1 init of console */ |
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sandbox_early_getopt_check, /* process command line flags (err/help) */ |
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display_banner, /* say that we are here */ |
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#if defined(CONFIG_DISPLAY_CPUINFO) |
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print_cpuinfo, /* display cpu info (and speed) */ |
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#endif |
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#if defined(CONFIG_DISPLAY_BOARDINFO) |
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checkboard, /* display board info */ |
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#endif |
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dram_init, /* configure available RAM banks */ |
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NULL, |
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}; |
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void board_init_f(ulong bootflag) |
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{ |
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init_fnc_t **init_fnc_ptr; |
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uchar *mem; |
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unsigned long addr_sp, addr, size; |
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gd = &gd_mem; |
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assert(gd); |
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memset((void *)gd, 0, sizeof(gd_t)); |
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#if defined(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 + _TEXT_BASE); |
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#endif |
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for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) { |
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if ((*init_fnc_ptr)() != 0) |
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hang(); |
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} |
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size = CONFIG_SYS_SDRAM_SIZE; |
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mem = os_malloc(CONFIG_SYS_SDRAM_SIZE); |
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assert(mem); |
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gd->arch.ram_buf = mem; |
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addr = (ulong)(mem + size); |
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/*
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* reserve memory for malloc() arena |
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*/ |
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addr_sp = addr - TOTAL_MALLOC_LEN; |
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debug("Reserving %dk for malloc() at: %08lx\n", |
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TOTAL_MALLOC_LEN >> 10, addr_sp); |
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/*
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* (permanently) allocate a Board Info struct |
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* and a permanent copy of the "global" data |
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*/ |
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addr_sp -= sizeof(bd_t); |
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gd->bd = (bd_t *) addr_sp; |
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debug("Reserving %zu Bytes for Board Info at: %08lx\n", |
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sizeof(bd_t), addr_sp); |
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/* Ram ist board specific, so move it to board code ... */ |
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dram_init_banksize(); |
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display_dram_config(); /* and display it */ |
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/* We don't relocate, so just run the post-relocation code */ |
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board_init_r(NULL, 0); |
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/* NOTREACHED - no way out of command loop except booting */ |
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} |
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/************************************************************************
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* |
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* This is the next part if the initialization sequence: we are now |
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* running from RAM and have a "normal" C environment, i. e. global |
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* data can be written, BSS has been cleared, the stack size in not |
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* that critical any more, etc. |
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* |
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************************************************************************ |
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*/ |
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void board_init_r(gd_t *id, ulong dest_addr) |
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{ |
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if (id) |
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gd = id; |
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gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */ |
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serial_initialize(); |
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#ifdef CONFIG_POST |
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post_output_backlog(); |
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#endif |
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/* The Malloc area is at the top of simulated DRAM */ |
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mem_malloc_init((ulong)gd->arch.ram_buf + gd->ram_size - |
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TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN); |
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/* initialize environment */ |
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env_relocate(); |
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stdio_init(); /* get the devices list going. */ |
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jumptable_init(); |
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console_init_r(); /* fully init console as a device */ |
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#if defined(CONFIG_DISPLAY_BOARDINFO_LATE) |
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checkboard(); |
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#endif |
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#if defined(CONFIG_ARCH_MISC_INIT) |
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/* miscellaneous arch dependent initialisations */ |
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arch_misc_init(); |
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#endif |
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#if defined(CONFIG_MISC_INIT_R) |
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/* miscellaneous platform dependent initialisations */ |
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misc_init_r(); |
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#endif |
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/* set up exceptions */ |
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interrupt_init(); |
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/* enable exceptions */ |
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enable_interrupts(); |
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#ifdef CONFIG_BOARD_LATE_INIT |
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board_late_init(); |
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#endif |
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#ifdef CONFIG_POST |
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post_run(NULL, POST_RAM | post_bootmode_get(0)); |
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#endif |
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sandbox_main_loop_init(); |
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/*
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* For now, run the main loop. Later we might let this be done |
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* in the main program. |
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*/ |
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while (1) |
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main_loop(); |
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/* NOTREACHED - no way out of command loop except booting */ |
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} |
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void hang(void) |
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{ |
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puts("### ERROR ### Please RESET the board ###\n"); |
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for (;;) |
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; |
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} |
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