Merge branch 'master' of ssh://dbrownell@openocd.git.sourceforge.net/gitroot/openocd...

[openocd] / src / flash / davinci_nand.c

diff --git a/src/flash/davinci_nand.c b/src/flash/davinci_nand.c
index ffd35608df18b6fe2ee5d8fda292151070fb544e..b6210b8fdffc623468f37917538556dc1070e3b5 100644 (file)
--- a/src/flash/davinci_nand.c
+++ b/src/flash/davinci_nand.c
@@ -28,7 +28,7 @@
 #include "config.h"
 #endif
 
-#include "nand.h"
+#include "arm_nandio.h"
 
 
 enum ecc {
@@ -51,6 +51,9 @@ struct davinci_nand {
        uint32_t                cmd;            /* with CLE */
        uint32_t                addr;           /* with ALE */
 
+       /* write acceleration */
+       struct arm_nand_data    io;
+
        /* page i/o for the relevant flavor of hardware ECC */
        int (*read_page)(struct nand_device_s *nand, uint32_t page,
                        uint8_t *data, uint32_t data_size, uint8_t *oob, uint32_t oob_size);
@@ -181,7 +184,7 @@ static int davinci_read_data(struct nand_device_s *nand, void *data)
        return ERROR_OK;
 }
 
-/* REVISIT a bit of native code should let block I/O be MUCH faster */
+/* REVISIT a bit of native code should let block reads be MUCH faster */
 
 static int davinci_read_block_data(struct nand_device_s *nand,
                uint8_t *data, int data_size)
@@ -223,10 +226,17 @@ static int davinci_write_block_data(struct nand_device_s *nand,
        target_t *target = info->target;
        uint32_t nfdata = info->data;
        uint32_t tmp;
+       int status;
 
        if (!halted(target, "write_block"))
                return ERROR_NAND_OPERATION_FAILED;
 
+       /* try the fast way first */
+       status = arm_nandwrite(&info->io, data, data_size);
+       if (status != ERROR_NAND_NO_BUFFER)
+               return status;
+
+       /* else do it slowly */
        while (data_size >= 4) {
                tmp = le_to_h_u32(data);
                target_write_u32(target, nfdata, tmp);
@@ -285,6 +295,12 @@ static int davinci_write_page(struct nand_device_s *nand, uint32_t page,
                memset(oob, 0x0ff, oob_size);
        }
 
+       /* REVISIT avoid wasting SRAM:  unless nand->use_raw is set,
+        * use 512 byte chunks.  Read side support will often want
+        * to include oob_size ...
+        */
+       info->io.chunk_size = nand->page_size;
+
        status = info->write_page(nand, page, data, data_size, oob, oob_size);
        free(ooballoc);
        return status;
@@ -622,7 +638,6 @@ static int davinci_nand_device_command(struct command_context_s *cmd_ctx,
        unsigned long chip, aemif;
        enum ecc eccmode;
        int chipsel;
-       char *ep;
 
        /* arguments:
         *  - "davinci"
@@ -645,8 +660,8 @@ static int davinci_nand_device_command(struct command_context_s *cmd_ctx,
                goto fail;
        }
 
-       chip = strtoul(argv[2], &ep, 0);
-       if (*ep || chip == 0 || chip == ULONG_MAX) {
+       COMMAND_PARSE_NUMBER(ulong, argv[2], chip);
+       if (chip == 0) {
                LOG_ERROR("Invalid NAND chip address %s", argv[2]);
                goto fail;
        }
@@ -662,8 +677,8 @@ static int davinci_nand_device_command(struct command_context_s *cmd_ctx,
                goto fail;
        }
 
-       aemif = strtoul(argv[4], &ep, 0);
-       if (*ep || chip == 0 || chip == ULONG_MAX) {
+       COMMAND_PARSE_NUMBER(ulong, argv[4], aemif);
+       if (aemif == 0) {
                LOG_ERROR("Invalid AEMIF controller address %s", argv[4]);
                goto fail;
        }
@@ -700,6 +715,9 @@ static int davinci_nand_device_command(struct command_context_s *cmd_ctx,
 
        nand->controller_priv = info;
 
+       info->io.target = target;
+       info->io.data = info->data;
+
        /* NOTE:  for now we don't do any error correction on read.
         * Nothing else in OpenOCD currently corrects read errors,
         * and in any case it's *writing* that we care most about.