powerpc/t1024rdb: Add T1024 RDB board support

[karo-tx-uboot.git] / board / freescale / t102xrdb / cpld.c

diff --git a/board/freescale/t102xrdb/cpld.c b/board/freescale/t102xrdb/cpld.c
new file mode 100644 (file)
index 0000000..c03894a
--- /dev/null
+++ b/board/freescale/t102xrdb/cpld.c
@@ -0,0 +1,103 @@
+/**
+ * Copyright 2014 Freescale Semiconductor
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ *
+ * Freescale T1024RDB board-specific CPLD controlling supports.
+ *
+ * The following macros need to be defined:
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/io.h>
+#include "cpld.h"
+
+u8 cpld_read(unsigned int reg)
+{
+       void *p = (void *)CONFIG_SYS_CPLD_BASE;
+
+       return in_8(p + reg);
+}
+
+void cpld_write(unsigned int reg, u8 value)
+{
+       void *p = (void *)CONFIG_SYS_CPLD_BASE;
+
+       out_8(p + reg, value);
+}
+
+/**
+ * Set the boot bank to the alternate bank
+ */
+void cpld_set_altbank(void)
+{
+       u8 reg = CPLD_READ(flash_csr);
+
+       reg = (reg & ~CPLD_BANK_SEL_MASK) | CPLD_LBMAP_ALTBANK;
+
+       CPLD_WRITE(flash_csr, reg);
+       CPLD_WRITE(reset_ctl1, CPLD_LBMAP_RESET);
+}
+
+/**
+ * Set the boot bank to the default bank
+ */
+void cpld_set_defbank(void)
+{
+       u8 reg = CPLD_READ(flash_csr);
+
+       reg = (reg & ~CPLD_BANK_SEL_MASK) | CPLD_LBMAP_DFLTBANK;
+
+       CPLD_WRITE(flash_csr, reg);
+       CPLD_WRITE(reset_ctl1, CPLD_LBMAP_RESET);
+}
+
+static void cpld_dump_regs(void)
+{
+       printf("cpld_ver         = 0x%02x\n", CPLD_READ(cpld_ver));
+       printf("cpld_ver_sub     = 0x%02x\n", CPLD_READ(cpld_ver_sub));
+       printf("hw_ver           = 0x%02x\n", CPLD_READ(hw_ver));
+       printf("sw_ver           = 0x%02x\n", CPLD_READ(sw_ver));
+       printf("reset_ctl1       = 0x%02x\n", CPLD_READ(reset_ctl1));
+       printf("reset_ctl2       = 0x%02x\n", CPLD_READ(reset_ctl2));
+       printf("int_status       = 0x%02x\n", CPLD_READ(int_status));
+       printf("flash_csr        = 0x%02x\n", CPLD_READ(flash_csr));
+       printf("fan_ctl_status   = 0x%02x\n", CPLD_READ(fan_ctl_status));
+       printf("led_ctl_status   = 0x%02x\n", CPLD_READ(led_ctl_status));
+       printf("sfp_ctl_status   = 0x%02x\n", CPLD_READ(sfp_ctl_status));
+       printf("misc_ctl_status  = 0x%02x\n", CPLD_READ(misc_ctl_status));
+       printf("boot_override    = 0x%02x\n", CPLD_READ(boot_override));
+       printf("boot_config1     = 0x%02x\n", CPLD_READ(boot_config1));
+       printf("boot_config2     = 0x%02x\n", CPLD_READ(boot_config2));
+       putc('\n');
+}
+
+int do_cpld(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+       int rc = 0;
+
+       if (argc <= 1)
+               return cmd_usage(cmdtp);
+
+       if (strcmp(argv[1], "reset") == 0) {
+               if (strcmp(argv[2], "altbank") == 0)
+                       cpld_set_altbank();
+               else
+                       cpld_set_defbank();
+       } else if (strcmp(argv[1], "dump") == 0) {
+               cpld_dump_regs();
+       } else {
+               rc = cmd_usage(cmdtp);
+       }
+
+       return rc;
+}
+
+U_BOOT_CMD(
+       cpld, CONFIG_SYS_MAXARGS, 1, do_cpld,
+       "Reset the board or alternate bank",
+       "reset - hard reset to default bank\n"
+       "cpld reset altbank - reset to alternate bank\n"
+       "cpld dump - display the CPLD registers\n"
+       );