summaryrefslogtreecommitdiff
path: root/target/linux/at91/image/dfboot/src/dataflash.c
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/at91/image/dfboot/src/dataflash.c')
-rw-r--r--target/linux/at91/image/dfboot/src/dataflash.c208
1 files changed, 208 insertions, 0 deletions
diff --git a/target/linux/at91/image/dfboot/src/dataflash.c b/target/linux/at91/image/dfboot/src/dataflash.c
new file mode 100644
index 0000000..5e54460
--- /dev/null
+++ b/target/linux/at91/image/dfboot/src/dataflash.c
@@ -0,0 +1,208 @@
+/*----------------------------------------------------------------------------
+ * ATMEL Microcontroller Software Support - ROUSSET -
+ *----------------------------------------------------------------------------
+ * The software is delivered "AS IS" without warranty or condition of any
+ * kind, either express, implied or statutory. This includes without
+ * limitation any warranty or condition with respect to merchantability or
+ * fitness for any particular purpose, or against the infringements of
+ * intellectual property rights of others.
+ *----------------------------------------------------------------------------
+ * File Name : dataflash.c
+ * Object : High level functions for the dataflash
+ * Creation : HIi 10/10/2003
+ *----------------------------------------------------------------------------
+ */
+#include "config.h"
+#include "stdio.h"
+#include "dataflash.h"
+
+
+AT91S_DATAFLASH_INFO dataflash_info[CFG_MAX_DATAFLASH_BANKS];
+static AT91S_DataFlash DataFlashInst;
+
+int cs[][CFG_MAX_DATAFLASH_BANKS] = {
+ {CFG_DATAFLASH_LOGIC_ADDR_CS0, 0}, /* Logical adress, CS */
+ {CFG_DATAFLASH_LOGIC_ADDR_CS3, 3}
+};
+
+int AT91F_DataflashInit(void)
+{
+ int i;
+ int dfcode;
+ int Nb_device = 0;
+
+ AT91F_SpiInit();
+
+ for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
+ dataflash_info[i].id = 0;
+ dataflash_info[i].Device.pages_number = 0;
+ dfcode = AT91F_DataflashProbe (cs[i][1], &dataflash_info[i].Desc);
+
+ switch (dfcode) {
+ case AT45DB161:
+ dataflash_info[i].Device.pages_number = 4096;
+ dataflash_info[i].Device.pages_size = 528;
+ dataflash_info[i].Device.page_offset = 10;
+ dataflash_info[i].Device.byte_mask = 0x300;
+ dataflash_info[i].Device.cs = cs[i][1];
+ dataflash_info[i].Desc.DataFlash_state = IDLE;
+ dataflash_info[i].logical_address = cs[i][0];
+ dataflash_info[i].id = dfcode;
+ Nb_device++;
+ break;
+
+ case AT45DB321:
+ dataflash_info[i].Device.pages_number = 8192;
+ dataflash_info[i].Device.pages_size = 528;
+ dataflash_info[i].Device.page_offset = 10;
+ dataflash_info[i].Device.byte_mask = 0x300;
+ dataflash_info[i].Device.cs = cs[i][1];
+ dataflash_info[i].Desc.DataFlash_state = IDLE;
+ dataflash_info[i].logical_address = cs[i][0];
+ dataflash_info[i].id = dfcode;
+ Nb_device++;
+ break;
+
+ case AT45DB642:
+ dataflash_info[i].Device.pages_number = 8192;
+ dataflash_info[i].Device.pages_size = 1056;
+ dataflash_info[i].Device.page_offset = 11;
+ dataflash_info[i].Device.byte_mask = 0x700;
+ dataflash_info[i].Device.cs = cs[i][1];
+ dataflash_info[i].Desc.DataFlash_state = IDLE;
+ dataflash_info[i].logical_address = cs[i][0];
+ dataflash_info[i].id = dfcode;
+ Nb_device++;
+ break;
+ case AT45DB128:
+ dataflash_info[i].Device.pages_number = 16384;
+ dataflash_info[i].Device.pages_size = 1056;
+ dataflash_info[i].Device.page_offset = 11;
+ dataflash_info[i].Device.byte_mask = 0x700;
+ dataflash_info[i].Device.cs = cs[i][1];
+ dataflash_info[i].Desc.DataFlash_state = IDLE;
+ dataflash_info[i].logical_address = cs[i][0];
+ dataflash_info[i].id = dfcode;
+ Nb_device++;
+ break;
+ default:
+ break;
+ }
+ }
+ return (Nb_device);
+}
+
+
+void AT91F_DataflashPrintInfo(void)
+{
+ int i;
+ for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
+ if (dataflash_info[i].id != 0) {
+ printf ("DF:AT45DB");
+ switch (dataflash_info[i].id) {
+ case AT45DB161:
+ printf ("161");
+ break;
+
+ case AT45DB321:
+ printf ("321");
+ break;
+
+ case AT45DB642:
+ printf ("642");
+ break;
+ case AT45DB128:
+ printf ("128");
+ break;
+ }
+
+ printf ("\n# PG: %6d\n"
+ "PG SZ: %6d\n"
+ "SZ=%8d bytes\n"
+ "ADDR: %08X\n",
+ (unsigned int) dataflash_info[i].Device.pages_number,
+ (unsigned int) dataflash_info[i].Device.pages_size,
+ (unsigned int) dataflash_info[i].Device.pages_number *
+ dataflash_info[i].Device.pages_size,
+ (unsigned int) dataflash_info[i].logical_address);
+ }
+ }
+}
+
+
+/*------------------------------------------------------------------------------*/
+/* Function Name : AT91F_DataflashSelect */
+/* Object : Select the correct device */
+/*------------------------------------------------------------------------------*/
+static AT91PS_DataFlash AT91F_DataflashSelect(AT91PS_DataFlash pFlash,
+ unsigned int *addr)
+{
+ char addr_valid = 0;
+ int i;
+
+ for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++)
+ if ((*addr & 0xFF000000) == dataflash_info[i].logical_address) {
+ addr_valid = 1;
+ break;
+ }
+ if (!addr_valid) {
+ pFlash = (AT91PS_DataFlash) 0;
+ return pFlash;
+ }
+ pFlash->pDataFlashDesc = &(dataflash_info[i].Desc);
+ pFlash->pDevice = &(dataflash_info[i].Device);
+ *addr -= dataflash_info[i].logical_address;
+ return (pFlash);
+}
+
+
+/*------------------------------------------------------------------------------*/
+/* Function Name : read_dataflash */
+/* Object : dataflash memory read */
+/*------------------------------------------------------------------------------*/
+int read_dataflash(unsigned long addr, unsigned long size, char *result)
+{
+ unsigned int AddrToRead = addr;
+ AT91PS_DataFlash pFlash = &DataFlashInst;
+
+ pFlash = AT91F_DataflashSelect (pFlash, &AddrToRead);
+ if (pFlash == 0)
+ return -1;
+
+ return (AT91F_DataFlashRead(pFlash, AddrToRead, size, result));
+}
+
+
+/*-----------------------------------------------------------------------------*/
+/* Function Name : write_dataflash */
+/* Object : write a block in dataflash */
+/*-----------------------------------------------------------------------------*/
+int write_dataflash(unsigned long addr_dest, unsigned int addr_src,
+ unsigned int size)
+{
+ unsigned int AddrToWrite = addr_dest;
+ AT91PS_DataFlash pFlash = &DataFlashInst;
+
+ pFlash = AT91F_DataflashSelect(pFlash, &AddrToWrite);
+ if (AddrToWrite == -1)
+ return -1;
+
+ return AT91F_DataFlashWrite(pFlash, (unsigned char *) addr_src, AddrToWrite, size);
+}
+
+/*-----------------------------------------------------------------------------*/
+/* Function Name : erase_dataflash */
+/* Object : Erase entire dataflash */
+/*-----------------------------------------------------------------------------*/
+int erase_dataflash(unsigned long addr_dest)
+{
+ unsigned int AddrToWrite = addr_dest;
+ AT91PS_DataFlash pFlash = &DataFlashInst;
+
+ pFlash = AT91F_DataflashSelect (pFlash, &AddrToWrite);
+ if (AddrToWrite == -1)
+ return -1;
+
+ return AT91F_DataFlashErase(pFlash);
+}
+