ppc4xx: Add AMCC Canyonlands support (460EX) (1/3)
This patch adds support for the AMCC Canyonlands 460EX evaluation
board.
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/board/amcc/canyonlands/bootstrap.c b/board/amcc/canyonlands/bootstrap.c
new file mode 100644
index 0000000..3f5822e
--- /dev/null
+++ b/board/amcc/canyonlands/bootstrap.c
@@ -0,0 +1,169 @@
+/*
+ * (C) Copyright 2008
+ * 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 <i2c.h>
+#include <asm/io.h>
+
+/*
+ * NOR and NAND boot options change bytes 6, 7, 8, 9, 11. The
+ * values are independent of the rest of the clock settings.
+ */
+
+#define NAND_COMPATIBLE 0x01
+#define NOR_COMPATIBLE 0x02
+
+#define I2C_EEPROM_ADDR 0x52
+
+static char *config_labels[] = {
+ "CPU: 600 PLB: 200 OPB: 100 EBC: 100",
+ "CPU: 800 PLB: 200 OPB: 100 EBC: 100",
+ NULL
+};
+
+static u8 boot_configs[][17] = {
+ {
+ (NOR_COMPATIBLE),
+ 0x86, 0x80, 0xce, 0x1f, 0x79, 0x80, 0x00, 0xa0, 0x40, 0x08,
+ 0x23, 0x50, 0x0d, 0x95, 0x00, 0x00
+ },
+ {
+ (NOR_COMPATIBLE),
+ 0x86, 0x80, 0xba, 0x14, 0x99, 0x80, 0x00, 0xa0, 0x40, 0x08,
+ 0x23, 0x50, 0x0d, 0x95, 0x00, 0x00
+ },
+ {
+ 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ }
+};
+
+/*
+ * Bytes 6,8,9,11 change for NAND boot
+ */
+static u8 nand_boot[] = {
+ 0xd0, 0xa0, 0x68, 0x58
+};
+
+static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ u8 *buf, b_nand;
+ int x, y, nbytes, selcfg;
+ extern char console_buffer[];
+
+ if (argc < 2) {
+ printf("Usage:\n%s\n", cmdtp->usage);
+ return 1;
+ }
+
+ if ((strcmp(argv[1], "nor") != 0) &&
+ (strcmp(argv[1], "nand") != 0)) {
+ printf("Unsupported boot-device - only nor|nand support\n");
+ return 1;
+ }
+
+ /* set the nand flag based on provided input */
+ if ((strcmp(argv[1], "nand") == 0))
+ b_nand = 1;
+ else
+ b_nand = 0;
+
+ printf("Available configurations: \n\n");
+
+ if (b_nand) {
+ for(x = 0, y = 0; boot_configs[x][0] != 0; x++) {
+ /* filter on nand compatible */
+ if (boot_configs[x][0] & NAND_COMPATIBLE) {
+ printf(" %d - %s\n", (y+1), config_labels[x]);
+ y++;
+ }
+ }
+ } else {
+ for(x = 0, y = 0; boot_configs[x][0] != 0; x++) {
+ /* filter on nor compatible */
+ if (boot_configs[x][0] & NOR_COMPATIBLE) {
+ printf(" %d - %s\n", (y+1), config_labels[x]);
+ y++;
+ }
+ }
+ }
+
+ do {
+ nbytes = readline(" Selection [1-x / quit]: ");
+
+ if (nbytes) {
+ if (strcmp(console_buffer, "quit") == 0)
+ return 0;
+ selcfg = simple_strtol(console_buffer, NULL, 10);
+ if ((selcfg < 1) || (selcfg > y))
+ nbytes = 0;
+ }
+ } while (nbytes == 0);
+
+
+ y = (selcfg - 1);
+
+ for (x = 0; boot_configs[x][0] != 0; x++) {
+ if (b_nand) {
+ if (boot_configs[x][0] & NAND_COMPATIBLE) {
+ if (y > 0)
+ y--;
+ else if (y < 1)
+ break;
+ }
+ } else {
+ if (boot_configs[x][0] & NOR_COMPATIBLE) {
+ if (y > 0)
+ y--;
+ else if (y < 1)
+ break;
+ }
+ }
+ }
+
+ buf = &boot_configs[x][1];
+
+ if (b_nand) {
+ buf[6] = nand_boot[0];
+ buf[8] = nand_boot[1];
+ buf[9] = nand_boot[2];
+ buf[11] = nand_boot[3];
+ }
+
+ if (i2c_write(I2C_EEPROM_ADDR, 0, 1, buf, 16) != 0)
+ printf("Error writing to EEPROM at address 0x%x\n", I2C_EEPROM_ADDR);
+ udelay(CFG_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
+
+ printf("Done\n");
+ printf("Please power-cycle the board for the changes to take effect\n");
+
+ return 0;
+}
+
+U_BOOT_CMD(
+ bootstrap, 2, 0, do_bootstrap,
+ "bootstrap - program the I2C bootstrap EEPROM\n",
+ "<nand|nor> - strap to boot from NAND or NOR flash\n"
+ );