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-rw-r--r--board/zeus/zeus.c511
1 files changed, 511 insertions, 0 deletions
diff --git a/board/zeus/zeus.c b/board/zeus/zeus.c
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+/*
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <malloc.h>
+#include <environment.h>
+#include <logbuff.h>
+#include <post.h>
+
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <asm/gpio.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define REBOOT_MAGIC 0x07081967
+#define REBOOT_NOP 0x00000000
+#define REBOOT_DO_POST 0x00000001
+
+extern flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
+extern env_t *env_ptr;
+extern uchar default_environment[];
+
+ulong flash_get_size(ulong base, int banknum);
+void env_crc_update(void);
+int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
+
+static u32 start_time;
+
+int board_early_init_f(void)
+{
+ mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
+ mtdcr(uicer, 0x00000000); /* disable all ints */
+ mtdcr(uiccr, 0x00000000);
+ mtdcr(uicpr, 0xFFFF7F00); /* set int polarities */
+ mtdcr(uictr, 0x00000000); /* set int trigger levels */
+ mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
+ mtdcr(uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority */
+
+ /*
+ * Configure CPC0_PCI to enable PerWE as output
+ */
+ mtdcr(cpc0_pci, CPC0_PCI_SPE);
+
+ return 0;
+}
+
+int misc_init_r(void)
+{
+ u32 pbcr;
+ int size_val = 0;
+ u32 post_magic;
+ u32 post_val;
+
+ post_magic = in_be32((void *)CFG_POST_MAGIC);
+ post_val = in_be32((void *)CFG_POST_VAL);
+ if ((post_magic == REBOOT_MAGIC) && (post_val == REBOOT_DO_POST)) {
+ /*
+ * Set special bootline bootparameter to pass this POST boot
+ * mode to Linux to reset the username/password
+ */
+ setenv("addmisc", "setenv bootargs \\${bootargs} factory_reset=yes");
+
+ /*
+ * Normally don't run POST tests, only when enabled
+ * via the sw-reset button. So disable further tests
+ * upon next bootup here.
+ */
+ out_be32((void *)CFG_POST_VAL, REBOOT_NOP);
+ } else {
+ /*
+ * Only run POST when initiated via the sw-reset button mechanism
+ */
+ post_word_store(0);
+ }
+
+ /*
+ * Get current time
+ */
+ start_time = get_timer(0);
+
+ /*
+ * FLASH stuff...
+ */
+
+ /* Re-do sizing to get full correct info */
+
+ /* adjust flash start and offset */
+ mfebc(pb0cr, pbcr);
+ switch (gd->bd->bi_flashsize) {
+ case 1 << 20:
+ size_val = 0;
+ break;
+ case 2 << 20:
+ size_val = 1;
+ break;
+ case 4 << 20:
+ size_val = 2;
+ break;
+ case 8 << 20:
+ size_val = 3;
+ break;
+ case 16 << 20:
+ size_val = 4;
+ break;
+ case 32 << 20:
+ size_val = 5;
+ break;
+ case 64 << 20:
+ size_val = 6;
+ break;
+ case 128 << 20:
+ size_val = 7;
+ break;
+ }
+ pbcr = (pbcr & 0x0001ffff) | gd->bd->bi_flashstart | (size_val << 17);
+ mtebc(pb0cr, pbcr);
+
+ /*
+ * Re-check to get correct base address
+ */
+ flash_get_size(gd->bd->bi_flashstart, 0);
+
+ /* Monitor protection ON by default */
+ (void)flash_protect(FLAG_PROTECT_SET,
+ -CFG_MONITOR_LEN,
+ 0xffffffff,
+ &flash_info[0]);
+
+ /* Env protection ON by default */
+ (void)flash_protect(FLAG_PROTECT_SET,
+ CFG_ENV_ADDR_REDUND,
+ CFG_ENV_ADDR_REDUND + 2*CFG_ENV_SECT_SIZE - 1,
+ &flash_info[0]);
+
+ return 0;
+}
+
+/*
+ * Check Board Identity:
+ */
+int checkboard(void)
+{
+ char *s = getenv("serial#");
+
+ puts("Board: Zeus-");
+
+ if (in_be32((void *)GPIO0_IR) & GPIO_VAL(CFG_GPIO_ZEUS_PE))
+ puts("PE");
+ else
+ puts("CE");
+
+ puts(" of BulletEndPoint");
+
+ if (s != NULL) {
+ puts(", serial# ");
+ puts(s);
+ }
+ putc('\n');
+
+ /* both LED's off */
+ gpio_write_bit(CFG_GPIO_LED_RED, 0);
+ gpio_write_bit(CFG_GPIO_LED_GREEN, 0);
+ udelay(10000);
+ /* and on again */
+ gpio_write_bit(CFG_GPIO_LED_RED, 1);
+ gpio_write_bit(CFG_GPIO_LED_GREEN, 1);
+
+ return (0);
+}
+
+static u32 detect_sdram_size(void)
+{
+ u32 val;
+ u32 size;
+
+ mfsdram(mem_mb0cf, val);
+ size = (4 << 20) << ((val & 0x000e0000) >> 17);
+
+ /*
+ * Check if 2nd bank is enabled too
+ */
+ mfsdram(mem_mb1cf, val);
+ if (val & 1)
+ size += (4 << 20) << ((val & 0x000e0000) >> 17);
+
+ return size;
+}
+
+long int initdram (int board_type)
+{
+ return detect_sdram_size();
+}
+
+#if defined(CFG_DRAM_TEST)
+int testdram(void)
+{
+ unsigned long *mem = (unsigned long *)0;
+ const unsigned long kend = (1024 / sizeof(unsigned long));
+ unsigned long k, n;
+ unsigned long msr;
+ unsigned long total_kbytes;
+
+ total_kbytes = detect_sdram_size();
+
+ msr = mfmsr();
+ mtmsr(msr & ~(MSR_EE));
+
+ for (k = 0; k < total_kbytes ;
+ ++k, mem += (1024 / sizeof(unsigned long))) {
+ if ((k & 1023) == 0) {
+ printf("%3d MB\r", k / 1024);
+ }
+
+ memset(mem, 0xaaaaaaaa, 1024);
+ for (n = 0; n < kend; ++n) {
+ if (mem[n] != 0xaaaaaaaa) {
+ printf("SDRAM test fails at: %08x\n",
+ (uint) & mem[n]);
+ return 1;
+ }
+ }
+
+ memset(mem, 0x55555555, 1024);
+ for (n = 0; n < kend; ++n) {
+ if (mem[n] != 0x55555555) {
+ printf("SDRAM test fails at: %08x\n",
+ (uint) & mem[n]);
+ return 1;
+ }
+ }
+ }
+ printf("SDRAM test passes\n");
+ mtmsr(msr);
+
+ return 0;
+}
+#endif
+
+static int default_env_var(char *buf, char *var)
+{
+ char *ptr;
+ char *val;
+
+ /*
+ * Find env variable
+ */
+ ptr = strstr(buf + 4, var);
+ if (ptr == NULL) {
+ printf("ERROR: %s not found!\n", var);
+ return -1;
+ }
+ ptr += strlen(var) + 1;
+
+ /*
+ * Now the ethaddr needs to be updated in the "normal"
+ * environment storage -> redundant flash.
+ */
+ val = ptr;
+ setenv(var, val);
+ printf("Updated %s from eeprom to %s!\n", var, val);
+
+ return 0;
+}
+
+static int restore_default(void)
+{
+ char *buf;
+ char *buf_save;
+ u32 crc;
+
+ /*
+ * Unprotect and erase environment area
+ */
+ flash_protect(FLAG_PROTECT_CLEAR,
+ CFG_ENV_ADDR_REDUND,
+ CFG_ENV_ADDR_REDUND + 2*CFG_ENV_SECT_SIZE - 1,
+ &flash_info[0]);
+
+ flash_sect_erase(CFG_ENV_ADDR_REDUND,
+ CFG_ENV_ADDR_REDUND + 2*CFG_ENV_SECT_SIZE - 1);
+
+ /*
+ * Now restore default environment from U-Boot image
+ * -> ipaddr, serverip...
+ */
+ memset(env_ptr, 0, sizeof(env_t));
+ memcpy(env_ptr->data, default_environment, ENV_SIZE);
+#ifdef CFG_REDUNDAND_ENVIRONMENT
+ env_ptr->flags = 0xFF;
+#endif
+ env_crc_update();
+ gd->env_valid = 1;
+
+ /*
+ * Read board specific values from I2C EEPROM
+ * and set env variables accordingly
+ * -> ethaddr, eth1addr, serial#
+ */
+ buf = buf_save = malloc(FACTORY_RESET_ENV_SIZE);
+ if (eeprom_read(FACTORY_RESET_I2C_EEPROM, FACTORY_RESET_ENV_OFFS,
+ (u8 *)buf, FACTORY_RESET_ENV_SIZE)) {
+ puts("\nError reading EEPROM!\n");
+ } else {
+ crc = crc32(0, (u8 *)(buf + 4), FACTORY_RESET_ENV_SIZE - 4);
+ if (crc != *(u32 *)buf) {
+ printf("ERROR: crc mismatch %08lx %08lx\n", crc, *(u32 *)buf);
+ return -1;
+ }
+
+ default_env_var(buf, "ethaddr");
+ buf += 8 + 18;
+ default_env_var(buf, "eth1addr");
+ buf += 9 + 18;
+ default_env_var(buf, "serial#");
+ }
+
+ /*
+ * Finally save updated env variables back to flash
+ */
+ saveenv();
+
+ free(buf_save);
+
+ return 0;
+}
+
+int do_set_default(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ char *buf;
+ char *buf_save;
+ char str[32];
+ u32 crc;
+ char var[32];
+
+ if (argc < 4) {
+ puts("ERROR!\n");
+ return -1;
+ }
+
+ buf = buf_save = malloc(FACTORY_RESET_ENV_SIZE);
+ memset(buf, 0, FACTORY_RESET_ENV_SIZE);
+
+ strcpy(var, "ethaddr");
+ printf("Setting %s to %s\n", var, argv[1]);
+ sprintf(str, "%s=%s", var, argv[1]);
+ strcpy(buf + 4, str);
+ buf += strlen(str) + 1;
+
+ strcpy(var, "eth1addr");
+ printf("Setting %s to %s\n", var, argv[2]);
+ sprintf(str, "%s=%s", var, argv[2]);
+ strcpy(buf + 4, str);
+ buf += strlen(str) + 1;
+
+ strcpy(var, "serial#");
+ printf("Setting %s to %s\n", var, argv[3]);
+ sprintf(str, "%s=%s", var, argv[3]);
+ strcpy(buf + 4, str);
+
+ crc = crc32(0, (u8 *)(buf_save + 4), FACTORY_RESET_ENV_SIZE - 4);
+ *(u32 *)buf_save = crc;
+
+ if (eeprom_write(FACTORY_RESET_I2C_EEPROM, FACTORY_RESET_ENV_OFFS,
+ (u8 *)buf_save, FACTORY_RESET_ENV_SIZE)) {
+ puts("\nError writing EEPROM!\n");
+ return -1;
+ }
+
+ free(buf_save);
+
+ return 0;
+}
+
+U_BOOT_CMD(
+ setdef, 4, 1, do_set_default,
+ "setdef - write board-specific values to EEPROM (ethaddr...)\n",
+ "ethaddr eth1addr serial#\n - write board-specific values to EEPROM\n"
+ );
+
+static inline int sw_reset_pressed(void)
+{
+ return !(in_be32((void *)GPIO0_IR) & GPIO_VAL(CFG_GPIO_SW_RESET));
+}
+
+int do_chkreset(cmd_tbl_t* cmdtp, int flag, int argc, char* argv[])
+{
+ int delta;
+ int count = 0;
+ int post = 0;
+ int factory_reset = 0;
+
+ if (!sw_reset_pressed()) {
+ printf("SW-Reset already high (Button released)\n");
+ printf("-> No action taken!\n");
+ return 0;
+ }
+
+ printf("Waiting for SW-Reset button to be released.");
+
+ while (1) {
+ delta = get_timer(start_time);
+ if (!sw_reset_pressed())
+ break;
+
+ if ((delta > CFG_TIME_POST) && !post) {
+ printf("\nWhen released now, POST tests will be started.");
+ gpio_write_bit(CFG_GPIO_LED_GREEN, 0);
+ post = 1;
+ }
+
+ if ((delta > CFG_TIME_FACTORY_RESET) && !factory_reset) {
+ printf("\nWhen released now, factory default values"
+ " will be restored.");
+ gpio_write_bit(CFG_GPIO_LED_RED, 0);
+ factory_reset = 1;
+ }
+
+ udelay(1000);
+ if (!(count++ % 1000))
+ printf(".");
+ }
+
+
+ printf("\nSW-Reset Button released after %d milli-seconds!\n", delta);
+
+ if (delta > CFG_TIME_FACTORY_RESET) {
+ printf("Starting factory reset value restoration...\n");
+
+ /*
+ * Restore default setting
+ */
+ restore_default();
+
+ /*
+ * Reset the board for default to become valid
+ */
+ do_reset(NULL, 0, 0, NULL);
+
+ return 0;
+ }
+
+ if (delta > CFG_TIME_POST) {
+ printf("Starting POST configuration...\n");
+
+ /*
+ * Enable POST upon next bootup
+ */
+ out_be32((void *)CFG_POST_MAGIC, REBOOT_MAGIC);
+ out_be32((void *)CFG_POST_VAL, REBOOT_DO_POST);
+ post_bootmode_init();
+
+ /*
+ * Reset the logbuffer for a clean start
+ */
+ logbuff_reset();
+
+ do_reset(NULL, 0, 0, NULL);
+
+ return 0;
+ }
+
+ return 0;
+}
+
+U_BOOT_CMD (
+ chkreset, 1, 1, do_chkreset,
+ "chkreset- Check for status of SW-reset button and act accordingly\n",
+ NULL
+);
+
+#if defined(CONFIG_POST)
+/*
+ * Returns 1 if keys pressed to start the power-on long-running tests
+ * Called from board_init_f().
+ */
+int post_hotkeys_pressed(void)
+{
+ u32 post_magic;
+ u32 post_val;
+
+ post_magic = in_be32((void *)CFG_POST_MAGIC);
+ post_val = in_be32((void *)CFG_POST_VAL);
+
+ if ((post_magic == REBOOT_MAGIC) && (post_val == REBOOT_DO_POST))
+ return 1;
+ else
+ return 0;
+}
+#endif /* CONFIG_POST */
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