1 files changed, 71 insertions, 0 deletions
diff --git a/board/freescale/t208xrdb/cpld.c b/board/freescale/t208xrdb/cpld.c
new file mode 100644
index 0000000..4aa126b
--- /dev/null
+++ b/board/freescale/t208xrdb/cpld.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2014 Freescale Semiconductor
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ * Freescale T2080RDB board-specific CPLD controlling supports.
+ */
+
+#include <common.h>
+#include <command.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_ctl, 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_ctl, CPLD_LBMAP_RESET);
+}
+
+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 {
+		rc = cmd_usage(cmdtp);
+	}
+
+	return rc;
+}
+
+U_BOOT_CMD(
+	cpld, CONFIG_SYS_MAXARGS, 1, do_cpld,
+	"Reset the board or alternate bank",
+	"reset: reset to default bank\n"
+	"cpld reset altbank: reset to alternate bank\n"
+);