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git://projects.qi-hardware.com/xburst-tools.git
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8d0a6cbd9f
We need putc even when we are operating entirely from steppingstone. Arrange that the board-specific putc code is in a section that goes into steppingstone, and adapt the utils.c putc() so that it no longer needs to indirect through the board_api struct that is in main memory. Signed-off-by: Andy Green <andy@openmoko.com>
128 lines
3.3 KiB
C
128 lines
3.3 KiB
C
/*
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* (C) Copyright 2007 OpenMoko, Inc.
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* Author: xiangfu liu <xiangfu@openmoko.org>
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* Andy Green <andy@openmoko.com>
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*
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* Configuation settings for the OPENMOKO Neo GTA02 Linux GSM phone
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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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/* NOTE this stuff runs in steppingstone context! */
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#include <qi.h>
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#include "nand_read.h"
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#include <neo_gta02.h>
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#include <neo_gta03.h>
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#define stringify2(s) stringify1(s)
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#define stringify1(s) #s
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extern void bootloader_second_phase(void);
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const struct board_api *boards[] = {
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&board_api_gta02,
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NULL /* always last */
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};
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struct board_api const * this_board;
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extern int is_jtag;
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void start_qi(void)
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{
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int flag = 0;
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int board = 0;
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/*
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* well, we can be running on this CPU two different ways.
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*
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* 1) We were copied into steppingstone and TEXT_BASE already
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* by JTAG. We don't have to do anything else. JTAG script
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* then sets data at address 0x4 to 0xffffffff as a signal we
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* are running by JTAG.
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*
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* 2) We only got our first 4K into steppingstone, we need to copy
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* the rest of ourselves into TEXT_BASE.
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*
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* So we do the copy out of NAND only if we see we did not come up
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* under control of JTAG.
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*/
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if (!is_jtag)
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/*
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* We got the first 4KBytes of the bootloader pulled into the
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* steppingstone SRAM for free. Now we pull the whole bootloader
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* image into SDRAM.
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*
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* This code and the .S files are arranged by the linker script
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* to expect to run from 0x0. But the linker script has told
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* everything else to expect to run from 0x33000000+. That's
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* why we are going to be able to copy this code and not have it
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* crash when we run it from there.
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*/
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/* We randomly pull 32KBytes of bootloader */
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if (nand_read_ll((u8 *)TEXT_BASE, 0, 32 * 1024 / 512) < 0)
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goto unhappy;
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/* ask all the boards we support in turn if they recognize this
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* hardware we are running on, accept the first positive answer
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*/
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this_board = boards[board];
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while (!flag && this_board) {
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/* check if it is the right board... */
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if (this_board->is_this_board()) {
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flag = 1;
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continue;
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}
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this_board = boards[board++];
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}
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this_board->port_init();
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set_putc_func(this_board->putc);
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/* stick some hello messages on debug console */
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puts("\n\n\nQi Bootloader "stringify2(QI_CPU)" "
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stringify2(BUILD_HOST)" "
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stringify2(BUILD_VERSION)" "
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"\n");
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puts(stringify2(BUILD_DATE) " Copyright (C) 2008 Openmoko, Inc.\n");
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puts("\n Detected: ");
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puts(this_board->name);
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puts(", ");
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puts((this_board->get_board_variant)()->name);
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puts("\n");
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/*
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* jump to bootloader_second_phase() running from DRAM copy
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*/
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bootloader_second_phase();
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unhappy:
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while(1)
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;
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}
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