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![Wolfgang Denk](/assets/img/avatar_default.png)
A large number of boards incorrectly used getenv() in their board init code running before relocation. In some cases this caused U-Boot to hang when certain environment variables grew too long. Fix the code to use getenv_r(). Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Stefan Roese <sr@denx.de> Cc: The LEOX team <team@leox.org> Cc: Michael Schwingen <michael@schwingen.org> Cc: Georg Schardt <schardt@team-ctech.de> Cc: Werner Pfister <Pfister_Werner@intercontrol.de> Cc: Dirk Eibach <eibach@gdsys.de> Cc: Peter De Schrijver <p2@mind.be> Cc: John Zhan <zhanz@sinovee.com> Cc: Rishi Bhattacharya <rishi@ti.com> Cc: Peter Tyser <ptyser@xes-inc.com>
197 lines
4.3 KiB
C
197 lines
4.3 KiB
C
/*
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* (C) Copyright 2000-2005
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2005-2007
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* Beijing UD Technology Co., Ltd., taihusupport@amcc.com
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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 <command.h>
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#include <asm/processor.h>
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#include <asm/io.h>
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#include <spi.h>
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#include <netdev.h>
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#include <asm/ppc4xx-gpio.h>
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extern int lcd_init(void);
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/*
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* board_early_init_f
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*/
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int board_early_init_f(void)
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{
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lcd_init();
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mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
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mtdcr(UIC0ER, 0x00000000); /* disable all ints */
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mtdcr(UIC0CR, 0x00000000);
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mtdcr(UIC0PR, 0xFFFF7F00); /* set int polarities */
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mtdcr(UIC0TR, 0x00000000); /* set int trigger levels */
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mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
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mtdcr(UIC0VCR, 0x00000001); /* set vect base=0,INT0 highest priority */
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mtebc(PB3AP, CONFIG_SYS_EBC_PB3AP); /* memory bank 3 (CPLD_LCM) initialization */
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mtebc(PB3CR, CONFIG_SYS_EBC_PB3CR);
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/*
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* Configure CPC0_PCI to enable PerWE as output
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* and enable the internal PCI arbiter
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*/
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mtdcr(CPC0_PCI, CPC0_PCI_SPE | CPC0_PCI_HOST_CFG_EN | CPC0_PCI_ARBIT_EN);
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return 0;
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}
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/*
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* Check Board Identity:
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*/
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int checkboard(void)
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{
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char buf[64];
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int i = getenv_f("serial#", buf, sizeof(buf));
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puts("Board: Taihu - AMCC PPC405EP Evaluation Board");
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if (i > 0) {
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puts(", serial# ");
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puts(buf);
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}
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putc('\n');
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return 0;
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}
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static int do_sw_stat(cmd_tbl_t* cmd_tp, int flags, int argc, char * const argv[])
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{
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char stat;
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int i;
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stat = in_8((u8 *) CPLD_REG0_ADDR);
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printf("SW2 status: ");
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for (i=0; i<4; i++) /* 4-position */
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printf("%d:%s ", i, stat & (0x08 >> i)?"on":"off");
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printf("\n");
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return 0;
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}
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U_BOOT_CMD (
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sw2_stat, 1, 1, do_sw_stat,
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"show status of switch 2",
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""
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);
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static int do_led_ctl(cmd_tbl_t* cmd_tp, int flags, int argc, char * const argv[])
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{
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int led_no;
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if (argc != 3)
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return cmd_usage(cmd_tp);
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led_no = simple_strtoul(argv[1], NULL, 16);
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if (led_no != 1 && led_no != 2)
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return cmd_usage(cmd_tp);
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if (strcmp(argv[2],"off") == 0x0) {
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if (led_no == 1)
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gpio_write_bit(30, 1);
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else
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gpio_write_bit(31, 1);
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} else if (strcmp(argv[2],"on") == 0x0) {
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if (led_no == 1)
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gpio_write_bit(30, 0);
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else
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gpio_write_bit(31, 0);
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} else {
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return cmd_usage(cmd_tp);
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}
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return 0;
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}
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U_BOOT_CMD (
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led_ctl, 3, 1, do_led_ctl,
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"make led 1 or 2 on or off",
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"<led_no> <on/off> - make led <led_no> on/off,\n"
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"\tled_no is 1 or 2"
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);
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#define SPI_CS_GPIO0 0
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#define SPI_SCLK_GPIO14 14
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#define SPI_DIN_GPIO15 15
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#define SPI_DOUT_GPIO16 16
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void spi_scl(int bit)
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{
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gpio_write_bit(SPI_SCLK_GPIO14, bit);
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}
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void spi_sda(int bit)
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{
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gpio_write_bit(SPI_DOUT_GPIO16, bit);
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}
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unsigned char spi_read(void)
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{
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return (unsigned char)gpio_read_in_bit(SPI_DIN_GPIO15);
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}
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int spi_cs_is_valid(unsigned int bus, unsigned int cs)
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{
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return bus == 0 && cs == 0;
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}
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void spi_cs_activate(struct spi_slave *slave)
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{
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gpio_write_bit(SPI_CS_GPIO0, 1);
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}
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void spi_cs_deactivate(struct spi_slave *slave)
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{
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gpio_write_bit(SPI_CS_GPIO0, 0);
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}
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#ifdef CONFIG_PCI
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static unsigned char int_lines[32] = {
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29, 30, 27, 28, 29, 30, 25, 27,
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29, 30, 27, 28, 29, 30, 27, 28,
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29, 30, 27, 28, 29, 30, 27, 28,
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29, 30, 27, 28, 29, 30, 27, 28};
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static void taihu_pci_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
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{
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unsigned char int_line = int_lines[PCI_DEV(dev) & 31];
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pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, int_line);
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}
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int pci_pre_init(struct pci_controller *hose)
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{
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hose->fixup_irq = taihu_pci_fixup_irq;
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return 1;
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}
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#endif /* CONFIG_PCI */
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int board_eth_init(bd_t *bis)
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{
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cpu_eth_init(bis);
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return pci_eth_init(bis);
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}
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