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-rw-r--r--board/at91rm9200dk/at91rm9200dk.c89
-rw-r--r--board/at91rm9200dk/config.mk2
-rw-r--r--board/at91rm9200dk/flash.c608
3 files changed, 387 insertions, 312 deletions
diff --git a/board/at91rm9200dk/at91rm9200dk.c b/board/at91rm9200dk/at91rm9200dk.c
index 07def18fdca..ffd9687bf4c 100644
--- a/board/at91rm9200dk/at91rm9200dk.c
+++ b/board/at91rm9200dk/at91rm9200dk.c
@@ -30,28 +30,35 @@
* Miscelaneous platform dependent initialisations
*/
-int board_init(void)
- {
- DECLARE_GLOBAL_DATA_PTR;
+int board_init (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ /* Enable Ctrlc */
+ console_init_f ();
+
+ /* Correct IRDA resistor problem */
+ /* Set PA23_TXD in Output */
+ (AT91PS_PIO) AT91C_BASE_PIOA->PIO_OER = AT91C_PA23_TXD2;
- /* memory and cpu-speed are setup before relocation */
- /* so we do _nothing_ here */
+ /* memory and cpu-speed are setup before relocation */
+ /* so we do _nothing_ here */
- /* arch number of AT91RM9200DK-Board */
- gd->bd->bi_arch_number = 251;
- /* adress of boot parameters */
- gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+ /* arch number of AT91RM9200DK-Board */
+ gd->bd->bi_arch_number = 251;
+ /* adress of boot parameters */
+ gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
- return 0;
+ return 0;
}
-int dram_init(void)
+int dram_init (void)
{
- DECLARE_GLOBAL_DATA_PTR;
+ DECLARE_GLOBAL_DATA_PTR;
- gd->bd->bi_dram[0].start = PHYS_SDRAM;
- gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
- return 0;
+ gd->bd->bi_dram[0].start = PHYS_SDRAM;
+ gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
+ return 0;
}
/*
@@ -59,47 +66,47 @@ int dram_init(void)
* The NAND lives in the CS2* space
*/
#if (CONFIG_COMMANDS & CFG_CMD_NAND)
-extern void
-nand_probe(ulong physadr);
+extern void nand_probe (ulong physadr);
-#define AT91_SMARTMEDIA_BASE 0x40000000 /* physical address to access memory on NCS3 */
-void
-nand_init(void)
+#define AT91_SMARTMEDIA_BASE 0x40000000 /* physical address to access memory on NCS3 */
+void nand_init (void)
{
/* Setup Smart Media, fitst enable the address range of CS3 */
- *AT91C_EBI_CSA |= AT91C_EBI_CS3A_SMC_SmartMedia;
- /* set the bus interface characteristics based on
- tDS Data Set up Time 30 - ns
- tDH Data Hold Time 20 - ns
- tALS ALE Set up Time 20 - ns
- 16ns at 60 MHz ~= 3 */
+ *AT91C_EBI_CSA |= AT91C_EBI_CS3A_SMC_SmartMedia;
+ /* set the bus interface characteristics based on
+ tDS Data Set up Time 30 - ns
+ tDH Data Hold Time 20 - ns
+ tALS ALE Set up Time 20 - ns
+ 16ns at 60 MHz ~= 3 */
/*memory mapping structures */
#define SM_ID_RWH (5 << 28)
#define SM_RWH (1 << 28)
#define SM_RWS (0 << 24)
#define SM_TDF (1 << 8)
#define SM_NWS (3)
- AT91C_BASE_SMC2->SMC2_CSR[3] = ( SM_RWH|SM_RWS | AT91C_SMC2_ACSS_STANDARD |
- AT91C_SMC2_DBW_8 | SM_TDF |
- AT91C_SMC2_WSEN | SM_NWS);
+ AT91C_BASE_SMC2->SMC2_CSR[3] = (SM_RWH | SM_RWS |
+ AT91C_SMC2_ACSS_STANDARD | AT91C_SMC2_DBW_8 |
+ SM_TDF | AT91C_SMC2_WSEN | SM_NWS);
- /* enable the SMOE line PC0=SMCE, A21=CLE, A22=ALE */
- *AT91C_PIOC_ASR = AT91C_PC0_BFCK | AT91C_PC1_BFRDY_SMOE | AT91C_PC3_BFBAA_SMWE;
- *AT91C_PIOC_PDR = AT91C_PC0_BFCK | AT91C_PC1_BFRDY_SMOE | AT91C_PC3_BFBAA_SMWE;
+ /* enable the SMOE line PC0=SMCE, A21=CLE, A22=ALE */
+ *AT91C_PIOC_ASR = AT91C_PC0_BFCK | AT91C_PC1_BFRDY_SMOE |
+ AT91C_PC3_BFBAA_SMWE;
+ *AT91C_PIOC_PDR = AT91C_PC0_BFCK | AT91C_PC1_BFRDY_SMOE |
+ AT91C_PC3_BFBAA_SMWE;
/* Configure PC2 as input (signal READY of the SmartMedia) */
- *AT91C_PIOC_PER = AT91C_PC2_BFAVD; /* enable direct output enable */
- *AT91C_PIOC_ODR = AT91C_PC2_BFAVD; /* disable output */
+ *AT91C_PIOC_PER = AT91C_PC2_BFAVD; /* enable direct output enable */
+ *AT91C_PIOC_ODR = AT91C_PC2_BFAVD; /* disable output */
/* Configure PB1 as input (signal Card Detect of the SmartMedia) */
- *AT91C_PIOB_PER = AT91C_PIO_PB1; /* enable direct output enable */
- *AT91C_PIOB_ODR = AT91C_PIO_PB1; /* disable output */
+ *AT91C_PIOB_PER = AT91C_PIO_PB1; /* enable direct output enable */
+ *AT91C_PIOB_ODR = AT91C_PIO_PB1; /* disable output */
- if (*AT91C_PIOB_PDSR & AT91C_PIO_PB1)
- printf ("No ");
- printf ("SmartMedia card inserted\n");
+ if (*AT91C_PIOB_PDSR & AT91C_PIO_PB1)
+ printf ("No ");
+ printf ("SmartMedia card inserted\n");
- printf("Probing at 0x%.8x\n", AT91_SMARTMEDIA_BASE);
- nand_probe(AT91_SMARTMEDIA_BASE);
+ printf ("Probing at 0x%.8x\n", AT91_SMARTMEDIA_BASE);
+ nand_probe (AT91_SMARTMEDIA_BASE);
}
#endif
diff --git a/board/at91rm9200dk/config.mk b/board/at91rm9200dk/config.mk
index a682451eb49..009b4d79477 100644
--- a/board/at91rm9200dk/config.mk
+++ b/board/at91rm9200dk/config.mk
@@ -1,2 +1,2 @@
-TEXT_BASE = 0x21fa0000
+TEXT_BASE = 0x21f00000
diff --git a/board/at91rm9200dk/flash.c b/board/at91rm9200dk/flash.c
index 6497f11ca47..4d4524f7017 100644
--- a/board/at91rm9200dk/flash.c
+++ b/board/at91rm9200dk/flash.c
@@ -31,11 +31,40 @@
ulong myflush(void);
+/* Flash Organization Structure */
+typedef struct OrgDef
+{
+ unsigned int sector_number;
+ unsigned int sector_size;
+} OrgDef;
+
+
+/* Flash Organizations */
+OrgDef OrgAT49BV16x4[] =
+{
+ { 8, 8*1024 }, /* 8 * 8kBytes sectors */
+ { 2, 32*1024 }, /* 2 * 32kBytes sectors */
+ { 30, 64*1024 } /* 30 * 64kBytes sectors */
+};
+
+OrgDef OrgAT49BV16x4A[] =
+{
+ { 8, 8*1024 }, /* 8 * 8kBytes sectors */
+ { 31, 64*1024 } /* 31 * 64kBytes sectors */
+};
+
+
#define FLASH_BANK_SIZE 0x200000 /* 2 MB */
#define MAIN_SECT_SIZE 0x10000 /* 64 KB */
flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+/* AT49BV1614A Codes */
+#define FLASH_CODE1 0xAA
+#define FLASH_CODE2 0x55
+#define ID_IN_CODE 0x90
+#define ID_OUT_CODE 0xF0
+
#define CMD_READ_ARRAY 0x00F0
#define CMD_UNLOCK1 0x00AA
@@ -48,6 +77,9 @@ flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
#define MEM_FLASH_ADDR1 (*(volatile u16 *)(CFG_FLASH_BASE + (0x00005555<<1)))
#define MEM_FLASH_ADDR2 (*(volatile u16 *)(CFG_FLASH_BASE + (0x00002AAA<<1)))
+#define IDENT_FLASH_ADDR1 (*(volatile u16 *)(CFG_FLASH_BASE + (0x0000555<<1)))
+#define IDENT_FLASH_ADDR2 (*(volatile u16 *)(CFG_FLASH_BASE + (0x0000AAA<<1)))
+
#define BIT_ERASE_DONE 0x0080
#define BIT_RDY_MASK 0x0080
#define BIT_PROGRAM_ERROR 0x0020
@@ -59,339 +91,375 @@ flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
/*-----------------------------------------------------------------------
*/
-
-ulong flash_init(void)
+void flash_identification (flash_info_t * info)
{
- int i, j;
- ulong size = 0;
-
- for (i = 0; i < CFG_MAX_FLASH_BANKS; i++)
- {
- ulong flashbase = 0;
- flash_info[i].flash_id =
- (ATM_MANUFACT & FLASH_VENDMASK) |
- (ATM_ID_BV1614 & FLASH_TYPEMASK);
- flash_info[i].size = FLASH_BANK_SIZE;
- flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
- memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
- if (i == 0)
- flashbase = PHYS_FLASH_1;
- else
- panic("configured to many flash banks!\n");
- for (j = 0; j < flash_info[i].sector_count; j++)
- {
-
- if (j <= 9)
- {
- /* 1st to 8th are 8 KB */
- if (j <= 7)
- {
- flash_info[i].start[j] = flashbase + j*0x2000;
- }
+ volatile u16 manuf_code, device_code, add_device_code;
- /* 9th and 10th are both 32 KB */
- if ((j == 8) || (j == 9))
- {
- flash_info[i].start[j] = flashbase + 0x10000 + (j-8)*0x8000;
- }
- }
- else
- {
- flash_info[i].start[j] = flashbase + (j-8)*MAIN_SECT_SIZE;
- }
- }
- size += flash_info[i].size;
- }
+ IDENT_FLASH_ADDR1 = FLASH_CODE1;
+ IDENT_FLASH_ADDR2 = FLASH_CODE2;
+ IDENT_FLASH_ADDR1 = ID_IN_CODE;
- flash_protect(FLAG_PROTECT_SET,
- CFG_FLASH_BASE,
- CFG_ENV_ADDR - 1,
- &flash_info[0]);
+ manuf_code = *(volatile u16 *) CFG_FLASH_BASE;
+ device_code = *(volatile u16 *) (CFG_FLASH_BASE + 2);
+ add_device_code = *(volatile u16 *) (CFG_FLASH_BASE + (3 << 1));
- flash_protect(FLAG_PROTECT_SET,
- CFG_ENV_ADDR,
- CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
- &flash_info[0]);
+ IDENT_FLASH_ADDR1 = FLASH_CODE1;
+ IDENT_FLASH_ADDR2 = FLASH_CODE2;
+ IDENT_FLASH_ADDR1 = ID_OUT_CODE;
- return size;
-}
+ /* Vendor type */
+ info->flash_id = ATM_MANUFACT & FLASH_VENDMASK;
+ printf ("Atmel: ");
-/*-----------------------------------------------------------------------
- */
-void flash_print_info (flash_info_t *info)
-{
- int i;
-
- switch (info->flash_id & FLASH_VENDMASK)
- {
- case (ATM_MANUFACT & FLASH_VENDMASK):
- printf("Atmel: ");
- break;
- default:
- printf("Unknown Vendor ");
- break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK)
- {
- case (ATM_ID_BV1614 & FLASH_TYPEMASK):
- printf("AT49BV1614 (16Mbit)\n");
- break;
- default:
- printf("Unknown Chip Type\n");
- goto Done;
- break;
- }
-
- printf(" Size: %ld MB in %d Sectors\n",
- info->size >> 20, info->sector_count);
-
- printf(" Sector Start Addresses:");
- for (i = 0; i < info->sector_count; i++)
- {
- if ((i % 5) == 0)
- {
- printf ("\n ");
- }
- printf (" %08lX%s", info->start[i],
- info->protect[i] ? " (RO)" : " ");
- }
- printf ("\n");
+ if ((device_code & FLASH_TYPEMASK) == (ATM_ID_BV1614 & FLASH_TYPEMASK)) {
+
+ if ((add_device_code & FLASH_TYPEMASK) ==
+ (ATM_ID_BV1614A & FLASH_TYPEMASK)) {
+ info->flash_id |= ATM_ID_BV1614A & FLASH_TYPEMASK;
+ printf ("AT49BV1614A (16Mbit)\n");
+ }
-Done:
+ } else { /* AT49BV1614 Flash */
+ info->flash_id |= ATM_ID_BV1614 & FLASH_TYPEMASK;
+ printf ("AT49BV1614 (16Mbit)\n");
+ }
}
-/*-----------------------------------------------------------------------
- */
-int flash_erase (flash_info_t *info, int s_first, int s_last)
+ulong flash_init (void)
{
- ulong result;
- int iflag, cflag, prot, sect;
- int rc = ERR_OK;
- int chip1;
+ int i, j, k;
+ unsigned int flash_nb_blocks, sector;
+ unsigned int start_address;
+ OrgDef *pOrgDef;
+
+ ulong size = 0;
- /* first look for protection bits */
+ for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
+ ulong flashbase = 0;
- if (info->flash_id == FLASH_UNKNOWN)
- return ERR_UNKNOWN_FLASH_TYPE;
+ flash_identification (&flash_info[i]);
- if ((s_first < 0) || (s_first > s_last)) {
- return ERR_INVAL;
- }
+ flash_info[i].size = FLASH_BANK_SIZE;
- if ((info->flash_id & FLASH_VENDMASK) !=
- (ATM_MANUFACT & FLASH_VENDMASK)) {
- return ERR_UNKNOWN_FLASH_VENDOR;
- }
+ if ((flash_info[i].flash_id & FLASH_TYPEMASK) ==
+ (ATM_ID_BV1614 & FLASH_TYPEMASK)) {
+ flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
+ memset (flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
- prot = 0;
- for (sect=s_first; sect<=s_last; ++sect) {
- if (info->protect[sect]) {
- prot++;
+ pOrgDef = OrgAT49BV16x4;
+ flash_nb_blocks = sizeof (OrgAT49BV16x4) / sizeof (OrgDef);
+ } else { /* AT49BV1614A Flash */
+ flash_info[i].sector_count = CFG_MAX_FLASH_SECT - 1;
+ memset (flash_info[i].protect, 0, CFG_MAX_FLASH_SECT - 1);
+
+ pOrgDef = OrgAT49BV16x4A;
+ flash_nb_blocks = sizeof (OrgAT49BV16x4A) / sizeof (OrgDef);
+ }
+
+ if (i == 0)
+ flashbase = PHYS_FLASH_1;
+ else
+ panic ("configured to many flash banks!\n");
+
+ sector = 0;
+ start_address = flashbase;
+
+ for (j = 0; j < flash_nb_blocks; j++) {
+ for (k = 0; k < pOrgDef[j].sector_number; k++) {
+ flash_info[i].start[sector++] = start_address;
+ start_address += pOrgDef[j].sector_size;
+ }
+ }
+
+ size += flash_info[i].size;
}
- }
- if (prot)
- return ERR_PROTECTED;
-
- /*
- * Disable interrupts which might cause a timeout
- * here. Remember that our exception vectors are
- * at address 0 in the flash, and we don't want a
- * (ticker) exception to happen while the flash
- * chip is in programming mode.
- */
- cflag = icache_status();
- icache_disable();
- iflag = disable_interrupts();
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect<=s_last && !ctrlc(); sect++)
- {
- printf("Erasing sector %2d ... ", sect);
- /* arm simple, non interrupt dependent timer */
- reset_timer_masked();
+ /* Protect binary boot image */
+ flash_protect (FLAG_PROTECT_SET,
+ CFG_FLASH_BASE,
+ CFG_FLASH_BASE + CFG_BOOT_SIZE - 1, &flash_info[0]);
- if (info->protect[sect] == 0)
- { /* not protected */
- volatile u16 *addr = (volatile u16 *)(info->start[sect]);
+ /* Protect environment variables */
+ flash_protect (FLAG_PROTECT_SET,
+ CFG_ENV_ADDR,
+ CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]);
- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
- MEM_FLASH_ADDR2 = CMD_UNLOCK2;
- MEM_FLASH_ADDR1 = CMD_ERASE_SETUP;
+ /* Protect U-Boot gzipped image */
+ flash_protect (FLAG_PROTECT_SET,
+ CFG_U_BOOT_BASE,
+ CFG_U_BOOT_BASE + CFG_U_BOOT_SIZE - 1, &flash_info[0]);
+
+ return size;
+}
- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
- MEM_FLASH_ADDR2 = CMD_UNLOCK2;
- *addr = CMD_ERASE_CONFIRM;
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info (flash_info_t * info)
+{
+ int i;
+
+ switch (info->flash_id & FLASH_VENDMASK) {
+ case (ATM_MANUFACT & FLASH_VENDMASK):
+ printf ("Atmel: ");
+ break;
+ default:
+ printf ("Unknown Vendor ");
+ break;
+ }
- /* wait until flash is ready */
- chip1 = 0;
+ switch (info->flash_id & FLASH_TYPEMASK) {
+ case (ATM_ID_BV1614 & FLASH_TYPEMASK):
+ printf ("AT49BV1614 (16Mbit)\n");
+ break;
+ case (ATM_ID_BV1614A & FLASH_TYPEMASK):
+ printf ("AT49BV1614A (16Mbit)\n");
+ break;
+ default:
+ printf ("Unknown Chip Type\n");
+ goto Done;
+ break;
+ }
- do
- {
- result = *addr;
+ printf (" Size: %ld MB in %d Sectors\n",
+ info->size >> 20, info->sector_count);
- /* check timeout */
- if (get_timer_masked() > CFG_FLASH_ERASE_TOUT)
- {
- MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
- chip1 = TMO;
- break;
+ printf (" Sector Start Addresses:");
+ for (i = 0; i < info->sector_count; i++) {
+ if ((i % 5) == 0) {
+ printf ("\n ");
}
+ printf (" %08lX%s", info->start[i],
+ info->protect[i] ? " (RO)" : " ");
+ }
+ printf ("\n");
- if (!chip1 && (result & 0xFFFF) & BIT_ERASE_DONE)
- chip1 = READY;
+ Done:
+}
- } while (!chip1);
+/*-----------------------------------------------------------------------
+ */
- MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
+int flash_erase (flash_info_t * info, int s_first, int s_last)
+{
+ ulong result;
+ int iflag, cflag, prot, sect;
+ int rc = ERR_OK;
+ int chip1;
- if (chip1 == ERR)
- {
- rc = ERR_PROG_ERROR;
- goto outahere;
- }
- if (chip1 == TMO)
- {
- rc = ERR_TIMOUT;
- goto outahere;
- }
-
- printf("ok.\n");
+ /* first look for protection bits */
+
+ if (info->flash_id == FLASH_UNKNOWN)
+ return ERR_UNKNOWN_FLASH_TYPE;
+
+ if ((s_first < 0) || (s_first > s_last)) {
+ return ERR_INVAL;
}
- else /* it was protected */
- {
- printf("protected!\n");
+
+ if ((info->flash_id & FLASH_VENDMASK) !=
+ (ATM_MANUFACT & FLASH_VENDMASK)) {
+ return ERR_UNKNOWN_FLASH_VENDOR;
}
- }
- if (ctrlc())
- printf("User Interrupt!\n");
+ prot = 0;
+ for (sect = s_first; sect <= s_last; ++sect) {
+ if (info->protect[sect]) {
+ prot++;
+ }
+ }
+ if (prot)
+ return ERR_PROTECTED;
+
+ /*
+ * Disable interrupts which might cause a timeout
+ * here. Remember that our exception vectors are
+ * at address 0 in the flash, and we don't want a
+ * (ticker) exception to happen while the flash
+ * chip is in programming mode.
+ */
+ cflag = icache_status ();
+ icache_disable ();
+ iflag = disable_interrupts ();
+
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect <= s_last && !ctrlc (); sect++) {
+ printf ("Erasing sector %2d ... ", sect);
+
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked ();
+
+ if (info->protect[sect] == 0) { /* not protected */
+ volatile u16 *addr = (volatile u16 *) (info->start[sect]);
+
+ MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+ MEM_FLASH_ADDR2 = CMD_UNLOCK2;
+ MEM_FLASH_ADDR1 = CMD_ERASE_SETUP;
+
+ MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+ MEM_FLASH_ADDR2 = CMD_UNLOCK2;
+ *addr = CMD_ERASE_CONFIRM;
+
+ /* wait until flash is ready */
+ chip1 = 0;
+
+ do {
+ result = *addr;
+
+ /* check timeout */
+ if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) {
+ MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
+ chip1 = TMO;
+ break;
+ }
+
+ if (!chip1 && (result & 0xFFFF) & BIT_ERASE_DONE)
+ chip1 = READY;
+
+ } while (!chip1);
+
+ MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
+
+ if (chip1 == ERR) {
+ rc = ERR_PROG_ERROR;
+ goto outahere;
+ }
+ if (chip1 == TMO) {
+ rc = ERR_TIMOUT;
+ goto outahere;
+ }
+
+ printf ("ok.\n");
+ } else { /* it was protected */
+ printf ("protected!\n");
+ }
+ }
+
+ if (ctrlc ())
+ printf ("User Interrupt!\n");
outahere:
- /* allow flash to settle - wait 10 ms */
- udelay_masked(10000);
+ /* allow flash to settle - wait 10 ms */
+ udelay_masked (10000);
- if (iflag)
- enable_interrupts();
+ if (iflag)
+ enable_interrupts ();
- if (cflag)
- icache_enable();
+ if (cflag)
+ icache_enable ();
- return rc;
+ return rc;
}
/*-----------------------------------------------------------------------
* Copy memory to flash
*/
-volatile static int write_word (flash_info_t *info, ulong dest, ulong data)
+volatile static int write_word (flash_info_t * info, ulong dest,
+ ulong data)
{
- volatile u16 *addr = (volatile u16 *)dest;
- ulong result;
- int rc = ERR_OK;
- int cflag, iflag;
- int chip1;
-
- /*
- * Check if Flash is (sufficiently) erased
- */
- result = *addr;
- if ((result & data) != data)
- return ERR_NOT_ERASED;
-
-
- /*
- * Disable interrupts which might cause a timeout
- * here. Remember that our exception vectors are
- * at address 0 in the flash, and we don't want a
- * (ticker) exception to happen while the flash
- * chip is in programming mode.
- */
- cflag = icache_status();
- icache_disable();
- iflag = disable_interrupts();
-
- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
- MEM_FLASH_ADDR2 = CMD_UNLOCK2;
- MEM_FLASH_ADDR1 = CMD_PROGRAM;
- *addr = data;
-
- /* arm simple, non interrupt dependent timer */
- reset_timer_masked();
-
- /* wait until flash is ready */
- chip1 = 0;
- do
- {
+ volatile u16 *addr = (volatile u16 *) dest;
+ ulong result;
+ int rc = ERR_OK;
+ int cflag, iflag;
+ int chip1;
+
+ /*
+ * Check if Flash is (sufficiently) erased
+ */
result = *addr;
+ if ((result & data) != data)
+ return ERR_NOT_ERASED;
+
+
+ /*
+ * Disable interrupts which might cause a timeout
+ * here. Remember that our exception vectors are
+ * at address 0 in the flash, and we don't want a
+ * (ticker) exception to happen while the flash
+ * chip is in programming mode.
+ */
+ cflag = icache_status ();
+ icache_disable ();
+ iflag = disable_interrupts ();
+
+ MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+ MEM_FLASH_ADDR2 = CMD_UNLOCK2;
+ MEM_FLASH_ADDR1 = CMD_PROGRAM;
+ *addr = data;
- /* check timeout */
- if (get_timer_masked() > CFG_FLASH_ERASE_TOUT)
- {
- chip1 = ERR | TMO;
- break;
- }
- if (!chip1 && ((result & 0x80) == (data & 0x80)))
- chip1 = READY;
+ /* arm simple, non interrupt dependent timer */
+ reset_timer_masked ();
- } while (!chip1);
+ /* wait until flash is ready */
+ chip1 = 0;
+ do {
+ result = *addr;
- *addr = CMD_READ_ARRAY;
+ /* check timeout */
+ if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) {
+ chip1 = ERR | TMO;
+ break;
+ }
+ if (!chip1 && ((result & 0x80) == (data & 0x80)))
+ chip1 = READY;
+
+ } while (!chip1);
- if (chip1 == ERR || *addr != data)
- rc = ERR_PROG_ERROR;
+ *addr = CMD_READ_ARRAY;
+
+ if (chip1 == ERR || *addr != data)
+ rc = ERR_PROG_ERROR;
- if (iflag)
- enable_interrupts();
+ if (iflag)
+ enable_interrupts ();
- if (cflag)
- icache_enable();
+ if (cflag)
+ icache_enable ();
- return rc;
+ return rc;
}
/*-----------------------------------------------------------------------
* Copy memory to flash.
*/
-int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
{
- ulong wp, data;
- int rc;
+ ulong wp, data;
+ int rc;
- if(addr & 1) {
- printf("unaligned destination not supported\n");
- return ERR_ALIGN;
- };
+ if (addr & 1) {
+ printf ("unaligned destination not supported\n");
+ return ERR_ALIGN;
+ };
- if((int)src & 1) {
- printf("unaligned source not supported\n");
- return ERR_ALIGN;
- };
+ if ((int) src & 1) {
+ printf ("unaligned source not supported\n");
+ return ERR_ALIGN;
+ };
- wp = addr;
+ wp = addr;
- while (cnt >= 2) {
- data = *((volatile u16*)src);
- if ((rc = write_word(info, wp, data)) != 0) {
- return (rc);
- }
- src += 2;
- wp += 2;
- cnt -= 2;
- }
-
- if(cnt == 1) {
- data = (*((volatile u8*)src)) | (*((volatile u8*)(wp+1)) << 8);
- if ((rc = write_word(info, wp, data)) != 0) {
- return (rc);
+ while (cnt >= 2) {
+ data = *((volatile u16 *) src);
+ if ((rc = write_word (info, wp, data)) != 0) {
+ return (rc);
+ }
+ src += 2;
+ wp += 2;
+ cnt -= 2;
}
- src += 1;
- wp += 1;
- cnt -= 1;
- };
- return ERR_OK;
+ if (cnt == 1) {
+ data = (*((volatile u8 *) src)) | (*((volatile u8 *) (wp + 1)) <<
+ 8);
+ if ((rc = write_word (info, wp, data)) != 0) {
+ return (rc);
+ }
+ src += 1;
+ wp += 1;
+ cnt -= 1;
+ };
+
+ return ERR_OK;
}
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-10 04:14:53 +0000