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sandbox: Add architecture lib files
These files are taken from the ARM board implementation and then reduced to remove unneeded cruft. Ideally we would work towards unifying arch/xxx/lib files, particularly board.c. Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
Wolfgang Denk
parent
4b0730d242
commit
b8605a1cbd
3 changed files with 366 additions and 0 deletions
51
arch/sandbox/lib/Makefile
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51
arch/sandbox/lib/Makefile
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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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# 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 $(TOPDIR)/config.mk
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LIB = $(obj)lib$(ARCH).o
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COBJS-y += board.o
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COBJS-y += interrupts.o
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SRCS := $(COBJS-y:.o=.c)
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OBJS := $(addprefix $(obj),$(COBJS-y))
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# Always build libsandbox.o
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TARGETS := $(LIB)
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all: $(TARGETS)
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$(LIB): $(obj).depend $(OBJS)
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$(call cmd_link_o_target, $(OBJS))
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#########################################################################
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# defines $(obj).depend target
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include $(SRCTREE)/rules.mk
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sinclude $(obj).depend
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#########################################################################
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276
arch/sandbox/lib/board.c
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276
arch/sandbox/lib/board.c
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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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DECLARE_GLOBAL_DATA_PTR;
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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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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 = malloc(sizeof(gd_t));
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assert(gd);
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memset((void *)gd, 0, sizeof(gd_t));
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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 = malloc(size);
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assert(mem);
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gd->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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#ifdef CONFIG_SERIAL_MULTI
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serial_initialize();
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#endif
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#ifdef CONFIG_POST
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post_output_backlog();
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#endif
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#if 0 /* Sandbox uses system malloc for now */
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/* The Malloc area is immediately below the monitor copy in DRAM */
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malloc_start = dest_addr - TOTAL_MALLOC_LEN;
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mem_malloc_init(malloc_start, TOTAL_MALLOC_LEN);
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#endif
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/* initialize environment */
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env_relocate();
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/* IP Address */
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gd->bd->bi_ip_addr = getenv_IPaddr("ipaddr");
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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 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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/*
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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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39
arch/sandbox/lib/interrupts.c
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39
arch/sandbox/lib/interrupts.c
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/*
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* Copyright (c) 2011 The Chromium OS Authors.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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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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int interrupt_init(void)
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{
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return 0;
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}
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void enable_interrupts(void)
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{
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return;
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}
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int disable_interrupts(void)
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{
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return 0;
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}
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