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authorTom Rini <trini@ti.com>2013-08-13 09:14:02 -0400
committerTom Rini <trini@ti.com>2013-08-13 09:14:02 -0400
commitb98d934128bcd98106e764d2f492ac79c38ae53d (patch)
tree5e078614fccb51f34fa8f7aa8d92c4f5f518b686 /board/freescale/c29xpcie/cpld.c
parent67cafc0861477bf19a587508ed13f4538c7a281e (diff)
parent3aab0cd852d7c9565c2559a7983cbb73852bac28 (diff)
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Merge branch 'master' of git://git.denx.de/u-boot-mpc85xx
Diffstat (limited to 'board/freescale/c29xpcie/cpld.c')
-rw-r--r--board/freescale/c29xpcie/cpld.c131
1 files changed, 131 insertions, 0 deletions
diff --git a/board/freescale/c29xpcie/cpld.c b/board/freescale/c29xpcie/cpld.c
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+/**
+ * Copyright 2013 Freescale Semiconductor
+ * Author: Mingkai Hu <Mingkai.hu@freescale.com>
+ * Po Liu <Po.Liu@freescale.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ *
+ * This file provides support for the board-specific CPLD used on some Freescale
+ * reference boards.
+ *
+ * The following macros need to be defined:
+ *
+ * CONFIG_SYS_CPLD_BASE - The virtual address of the base of the
+ * CPLD register map
+ *
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/io.h>
+
+#include "cpld.h"
+/**
+ * Set the boot bank to the alternate bank
+ */
+void cpld_set_altbank(u8 banksel)
+{
+ struct cpld_data *cpld_data = (void *)(CONFIG_SYS_CPLD_BASE);
+ u8 reg11;
+
+ reg11 = in_8(&cpld_data->flhcsr);
+
+ switch (banksel) {
+ case 1:
+ out_8(&cpld_data->flhcsr, (reg11 & CPLD_BANKSEL_MASK)
+ | CPLD_BANKSEL_EN | CPLD_SELECT_BANK1);
+ break;
+ case 2:
+ out_8(&cpld_data->flhcsr, (reg11 & CPLD_BANKSEL_MASK)
+ | CPLD_BANKSEL_EN | CPLD_SELECT_BANK2);
+ break;
+ case 3:
+ out_8(&cpld_data->flhcsr, (reg11 & CPLD_BANKSEL_MASK)
+ | CPLD_BANKSEL_EN | CPLD_SELECT_BANK3);
+ break;
+ case 4:
+ out_8(&cpld_data->flhcsr, (reg11 & CPLD_BANKSEL_MASK)
+ | CPLD_BANKSEL_EN | CPLD_SELECT_BANK4);
+ break;
+ default:
+ printf("Invalid value! [1-4]\n");
+ return;
+ }
+
+ udelay(100);
+ do_reset(NULL, 0, 0, NULL);
+}
+
+/**
+ * Set the boot bank to the default bank
+ */
+void cpld_set_defbank(void)
+{
+ cpld_set_altbank(4);
+}
+
+#ifdef DEBUG
+static void cpld_dump_regs(void)
+{
+ struct cpld_data *cpld_data = (void *)(CONFIG_SYS_CPLD_BASE);
+
+ printf("chipid1 = 0x%02x\n", in_8(&cpld_data->chipid1));
+ printf("chipid2 = 0x%02x\n", in_8(&cpld_data->chipid2));
+ printf("hwver = 0x%02x\n", in_8(&cpld_data->hwver));
+ printf("cpldver = 0x%02x\n", in_8(&cpld_data->cpldver));
+ printf("rstcon = 0x%02x\n", in_8(&cpld_data->rstcon));
+ printf("flhcsr = 0x%02x\n", in_8(&cpld_data->flhcsr));
+ printf("wdcsr = 0x%02x\n", in_8(&cpld_data->wdcsr));
+ printf("wdkick = 0x%02x\n", in_8(&cpld_data->wdkick));
+ printf("fancsr = 0x%02x\n", in_8(&cpld_data->fancsr));
+ printf("ledcsr = 0x%02x\n", in_8(&cpld_data->ledcsr));
+ printf("misc = 0x%02x\n", in_8(&cpld_data->misccsr));
+ printf("bootor = 0x%02x\n", in_8(&cpld_data->bootor));
+ printf("bootcfg1 = 0x%02x\n", in_8(&cpld_data->bootcfg1));
+ printf("bootcfg2 = 0x%02x\n", in_8(&cpld_data->bootcfg2));
+ printf("bootcfg3 = 0x%02x\n", in_8(&cpld_data->bootcfg3));
+ printf("bootcfg4 = 0x%02x\n", in_8(&cpld_data->bootcfg4));
+ putc('\n');
+}
+#endif
+
+int cpld_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ int rc = 0;
+ unsigned char value;
+
+ if (argc <= 1)
+ return cmd_usage(cmdtp);
+
+ if (strcmp(argv[1], "reset") == 0) {
+ if (!strcmp(argv[2], "altbank") && argv[3]) {
+ value = (u8)simple_strtoul(argv[3], NULL, 16);
+ cpld_set_altbank(value);
+ } else if (!argv[2])
+ cpld_set_defbank();
+ else
+ cmd_usage(cmdtp);
+#ifdef DEBUG
+ } else if (strcmp(argv[1], "dump") == 0) {
+ cpld_dump_regs();
+#endif
+ } else
+ rc = cmd_usage(cmdtp);
+
+ return rc;
+}
+
+U_BOOT_CMD(
+ cpld_cmd, CONFIG_SYS_MAXARGS, 1, cpld_cmd,
+ "Reset the board using the CPLD sequencer",
+ "reset - hard reset to default bank 4\n"
+ "cpld_cmd reset altbank [bank]- reset to alternate bank\n"
+ " - [bank] bank value select 1-4\n"
+ " - bank 1 on the flash 0x0000000~0x0ffffff\n"
+ " - bank 2 on the flash 0x1000000~0x1ffffff\n"
+ " - bank 3 on the flash 0x2000000~0x2ffffff\n"
+ " - bank 4 on the flash 0x3000000~0x3ffffff\n"
+#ifdef DEBUG
+ "cpld_cmd dump - display the CPLD registers\n"
+#endif
+ );