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-rw-r--r--board/cm-bf537u/flash.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/board/cm-bf537u/flash.c b/board/cm-bf537u/flash.c
new file mode 100644
index 000000000..ebe17b653
--- /dev/null
+++ b/board/cm-bf537u/flash.c
@@ -0,0 +1,34 @@
+/*
+ * flash.c - helper commands for working with GPIO-assisted flash
+ *
+ * Copyright (c) 2005-2009 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/blackfin.h>
+#include "gpio_cfi_flash.h"
+
+int do_ph(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ ulong faddr = CONFIG_SYS_FLASH_BASE;
+ ushort data;
+ ulong dflg;
+
+ if (argc > 1) {
+ dflg = simple_strtoul(argv[1], NULL, 16);
+ faddr |= (dflg << 21);
+ gpio_cfi_flash_swizzle((void *)faddr);
+ } else {
+ data = bfin_read_PORTHIO();
+ printf("Port H data %04x (PH0:%i)\n", data, !!(data & PH0));
+ }
+
+ return 0;
+}
+
+U_BOOT_CMD(ph, 3, 0, do_ph,
+ "set/clear PH0 GPIO flash bank switch\n",
+ "<ph0> - set PH0 GPIO pin state\n");