Update from 2013.01 to 2013.07

[karo-tx-uboot.git] / board / karo / common / nand.c

diff --git a/board/karo/common/nand.c b/board/karo/common/nand.c
new file mode 100644 (file)
index 0000000..c982901
--- /dev/null
+++ b/board/karo/common/nand.c
@@ -0,0 +1,157 @@
+/*
+ * (C) Copyright 2014 Lothar Waßmann <LW@KARO-electronics.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
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+*/
+
+#include <common.h>
+#include <errno.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+#include <nand.h>
+#include <mxcfb.h>
+#include <linux/list.h>
+#include <linux/fb.h>
+#include <jffs2/load_kernel.h>
+#include <malloc.h>
+
+#include "karo.h"
+
+#ifdef CONFIG_MAX_DTB_SIZE
+#define MAX_DTB_SIZE   CONFIG_MAX_DTB_SIZE
+#else
+#define MAX_DTB_SIZE   SZ_64K
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int karo_load_nand_part(const char *part, void *addr, size_t len)
+{
+       int ret;
+       struct mtd_device *dev;
+       struct part_info *part_info;
+       u8 part_num;
+
+       debug("Initializing mtd_parts\n");
+       ret = mtdparts_init();
+       if (ret)
+               return ret;
+
+       debug("Trying to find NAND partition '%s'\n", part);
+       ret = find_dev_and_part(part, &dev, &part_num, &part_info);
+       if (ret) {
+               printf("Failed to find flash partition '%s': %d\n",
+                       part, ret);
+
+               return ret;
+       }
+       debug("Found partition '%s': offset=%08x size=%08x\n",
+               part, part_info->offset, part_info->size);
+
+       if (part_info->size < len)
+               len = part_info->size;
+
+       debug("Reading NAND partition '%s' to %p\n", part, addr);
+       ret = nand_read_skip_bad(&nand_info[0], part_info->offset, &len,
+                               NULL, part_info->size, addr);
+       if (ret) {
+               printf("Failed to load partition '%s' to %p\n", part, addr);
+               return ret;
+       }
+
+       debug("Read %u byte from partition '%s' @ offset %08x\n",
+               len, part, part_info->offset);
+       return 0;
+}
+
+#if defined(CONFIG_SPLASH_SCREEN) && defined(CONFIG_MTDPARTS)
+static int erase_flash(loff_t offs, size_t len)
+{
+       nand_erase_options_t nand_erase_options;
+
+       memset(&nand_erase_options, 0, sizeof(nand_erase_options));
+       nand_erase_options.length = len;
+       nand_erase_options.offset = offs;
+
+       return nand_erase_opts(&nand_info[0], &nand_erase_options);
+}
+
+int do_fbdump(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+{
+       int ret;
+       size_t fbsize = calc_fbsize();
+       const char *part = "logo";
+       struct mtd_device *dev;
+       struct part_info *part_info;
+       u8 part_num;
+       u_char *addr = (u_char *)gd->fb_base;
+
+       if (argc > 2)
+               return CMD_RET_USAGE;
+
+       if (argc == 2)
+               part = argv[1];
+
+       if (!addr) {
+               printf("fb address unknown\n");
+               return CMD_RET_FAILURE;
+       }
+
+       debug("Initializing mtd_parts\n");
+       ret = mtdparts_init();
+       if (ret)
+               return CMD_RET_FAILURE;
+
+       debug("Trying to find NAND partition '%s'\n", part);
+       ret = find_dev_and_part(part, &dev, &part_num,
+                               &part_info);
+       if (ret) {
+               printf("Failed to find flash partition '%s': %d\n",
+                       part, ret);
+               return CMD_RET_FAILURE;
+       }
+       debug("Found partition '%s': offset=%08x size=%08x\n",
+               part, part_info->offset, part_info->size);
+       if (part_info->size < fbsize) {
+               printf("Error: partition '%s' smaller than frame buffer size: %u\n",
+                       part, fbsize);
+               return CMD_RET_FAILURE;
+       }
+       debug("Writing framebuffer %p to NAND partition '%s'\n",
+               addr, part);
+
+       ret = erase_flash(part_info->offset, fbsize);
+       if (ret) {
+               printf("Failed to erase partition '%s'\n", part);
+               return CMD_RET_FAILURE;
+       }
+
+       ret = nand_write_skip_bad(&nand_info[0], part_info->offset,
+                               &fbsize, NULL, part_info->size,
+                               addr, WITH_DROP_FFS);
+       if (ret) {
+               printf("Failed to write partition '%s'\n", part);
+               return CMD_RET_FAILURE;
+       }
+
+       debug("Wrote %u byte from %p to partition '%s' @ offset %08x\n",
+               fbsize, addr, part, part_info->offset);
+
+       return CMD_RET_SUCCESS;
+}
+
+U_BOOT_CMD(fbdump, 2, 0, do_fbdump, "dump framebuffer contents to flash",
+       "[partition name]\n"
+       "       default partition name: 'logo'\n");
+#endif