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authorBartlomiej Sieka <tur@semihalf.com>2006-03-05 18:57:33 +0100
committerBartlomiej Sieka <tur@semihalf.com>2006-03-05 18:57:33 +0100
commitaddb2e1650fdf872334478393f482dfdce965a61 (patch)
treec16d3de22d1e1040d3f8e6ecfaed20bf2f2c5ea6 /common/env_nand.c
parent038ccac511214b062c56f22b9413f784b86bcd87 (diff)
downloadu-boot-linaro-natty-addb2e1650fdf872334478393f482dfdce965a61.tar.gz
Re-factoring the legacy NAND code (legacy NAND now only in board-specific
code and in SoC code). Boards using the old way have CFG_NAND_LEGACY and BOARDLIBS = drivers/nand_legacy/libnand_legacy.a added. Build breakage for NETTA.ERR and NETTA_ISDN - will go away when the new NAND support is implemented for these boards.
Diffstat (limited to 'common/env_nand.c')
-rw-r--r--common/env_nand.c47
1 files changed, 26 insertions, 21 deletions
diff --git a/common/env_nand.c b/common/env_nand.c
index 60aba1e7e..489685353 100644
--- a/common/env_nand.c
+++ b/common/env_nand.c
@@ -36,7 +36,7 @@
#include <command.h>
#include <environment.h>
#include <linux/stddef.h>
-#include <linux/mtd/nand.h>
+#include <nand.h>
#if ((CONFIG_COMMANDS&(CFG_CMD_ENV|CFG_CMD_NAND)) == (CFG_CMD_ENV|CFG_CMD_NAND))
#define CMD_SAVEENV
@@ -55,16 +55,12 @@
#error CONFIG_INFERNO not supported yet
#endif
-/* references to names in cmd_nand.c */
-#define NANDRW_READ 0x01
-#define NANDRW_WRITE 0x00
-#define NANDRW_JFFS2 0x02
-extern struct nand_chip nand_dev_desc[];
-int nand_rw (struct nand_chip* nand, int cmd,
+int nand_legacy_rw (struct nand_chip* nand, int cmd,
size_t start, size_t len,
size_t * retlen, u_char * buf);
-int nand_erase(struct nand_chip* nand, size_t ofs,
- size_t len, int clean);
+
+/* info for NAND chips, defined in drivers/nand/nand.c */
+extern nand_info_t nand_info[];
/* references to names in env_common.c */
extern uchar default_environment[];
@@ -110,34 +106,43 @@ int env_init(void)
}
#ifdef CMD_SAVEENV
+/*
+ * The legacy NAND code saved the environment in the first NAND device i.e.,
+ * nand_dev_desc + 0. This is also the behaviour using the new NAND code.
+ */
int saveenv(void)
{
int total, ret = 0;
- puts ("Erasing Nand...");
- if (nand_erase(nand_dev_desc + 0, CFG_ENV_OFFSET, CFG_ENV_SIZE, 0))
- return 1;
+
+ puts ("Erasing Nand...");
+ if (nand_erase(&nand_info[0], CFG_NEW_OFFSET, CFG_ENV_SIZE))
+ return 1;
puts ("Writing to Nand... ");
- ret = nand_rw(nand_dev_desc + 0,
- NANDRW_WRITE | NANDRW_JFFS2, CFG_ENV_OFFSET, CFG_ENV_SIZE,
- &total, (u_char*)env_ptr);
- if (ret || total != CFG_ENV_SIZE)
+ total = CFG_ENV_SIZE;
+ ret = nand_write(&nand_info[0], CFG_ENV_OFFSET, &total,
+ (u_char*) env_ptr);
+ if (ret || total != CFG_ENV_SIZE)
return 1;
- puts ("done\n");
- return ret;
+ puts ("done\n");
+ return ret;
}
#endif /* CMD_SAVEENV */
+/*
+ * The legacy NAND code saved the environment in the first NAND device i.e.,
+ * nand_dev_desc + 0. This is also the behaviour using the new NAND code.
+ */
void env_relocate_spec (void)
{
#if !defined(ENV_IS_EMBEDDED)
int ret, total;
- ret = nand_rw(nand_dev_desc + 0,
- NANDRW_READ | NANDRW_JFFS2, CFG_ENV_OFFSET, CFG_ENV_SIZE,
- &total, (u_char*)env_ptr);
+ total = CFG_ENV_SIZE;
+ ret = nand_read(&nand_info[0], CFG_ENV_OFFSET, &total,
+ (u_char*) env_ptr);
if (ret || total != CFG_ENV_SIZE)
return use_default();