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LPC812 support

This commit is contained in:
Gareth McMullin 2014-03-08 18:58:39 +13:00
parent 12aeaad441
commit cbb85b6a45
1 changed files with 53 additions and 12 deletions
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63
src/lpc11xx.c
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@ -22,14 +22,14 @@ struct flash_program {
static struct flash_program flash_pgm;
#define MSP 17 // Main stack pointer register number
#define MSP 17 /* Main stack pointer register number */
#define MIN_RAM_SIZE_FOR_LPC8xx 1024
#define MIN_RAM_SIZE_FOR_LPC1xxx 2048
#define RAM_USAGE_FOR_IAP_ROUTINES 32 // IAP routines use 32 bytes at top of ram
#define RAM_USAGE_FOR_IAP_ROUTINES 32 /* IAP routines use 32 bytes at top of ram */
#define IAP_ENTRYPOINT 0x1fff1ff1
#define IAP_RAM_BASE 0x10000000
#define IAP_CMD_PREPARE 50
#define IAP_CMD_PROGRAM 51
#define IAP_CMD_ERASE 52
@ -48,6 +48,8 @@ static struct flash_program flash_pgm;
#define IAP_STATUS_COMPARE_ERROR 10
#define IAP_STATUS_BUSY 11
static const char lpc8xx_driver[] = "lpc8xx";
static const char lpc11xx_driver[] = "lpc11xx";
static void lpc11x_iap_call(struct target_s *target, struct flash_param *param, unsigned param_len);
static int lpc11xx_flash_prepare(struct target_s *target, uint32_t addr, int len);
static int lpc11xx_flash_erase(struct target_s *target, uint32_t addr, int len);
@ -70,6 +72,24 @@ static const char lpc11xx_xml_memory_map[] = "<?xml version=\"1.0\"?>"
" <memory type=\"ram\" start=\"0x10000000\" length=\"0x2000\"/>"
"</memory-map>";
/*
* Memory map for the lpc8xx devices, which otherwise look much like the lpc11xx.
*
* We could decode the RAM/flash sizes, but we just encode the largest possible here.
*
* Note that the LPC810 and LPC811 map their flash oddly; see the NXP LPC800 user
* manual (UM10601) for more details.
*/
static const char lpc8xx_xml_memory_map[] = "<?xml version=\"1.0\"?>"
/* "<!DOCTYPE memory-map "
" PUBLIC \"+//IDN gnu.org//DTD GDB Memory Map V1.0//EN\""
" \"http://sourceware.org/gdb/gdb-memory-map.dtd\">"*/
"<memory-map>"
" <memory type=\"flash\" start=\"0x00000000\" length=\"0x4000\">"
" <property name=\"blocksize\">0x400</property>"
" </memory>"
" <memory type=\"ram\" start=\"0x10000000\" length=\"0x1000\"/>"
"</memory-map>";
bool
lpc11xx_probe(struct target_s *target)
@ -103,11 +123,19 @@ lpc11xx_probe(struct target_s *target)
case 0x2058002B: /* lpc1115 */
case 0x1431102B: /* lpc11c22 */
case 0x1430102B: /* lpc11c24 */
target->driver = "lpc11xx";
target->driver = lpc11xx_driver;
target->xml_mem_map = lpc11xx_xml_memory_map;
target->flash_erase = lpc11xx_flash_erase;
target->flash_write = lpc11xx_flash_write;
return true;
case 0x1812202b: /* LPC812M101FDH20 */
target->driver = lpc8xx_driver;
target->xml_mem_map = lpc8xx_xml_memory_map;
target->flash_erase = lpc11xx_flash_erase;
target->flash_write = lpc11xx_flash_write;
return true;
}
@ -129,7 +157,11 @@ lpc11x_iap_call(struct target_s *target, struct flash_param *param, unsigned par
regs[0] = IAP_RAM_BASE + offsetof(struct flash_param, command);
regs[1] = IAP_RAM_BASE + offsetof(struct flash_param, result);
regs[MSP] = IAP_RAM_BASE + MIN_RAM_SIZE_FOR_LPC1xxx - RAM_USAGE_FOR_IAP_ROUTINES;// stack pointer - top of the smallest ram less 32 for IAP usage
// stack pointer - top of the smallest ram less 32 for IAP usage
if (target->driver == lpc8xx_driver)
regs[MSP] = IAP_RAM_BASE + MIN_RAM_SIZE_FOR_LPC8xx - RAM_USAGE_FOR_IAP_ROUTINES;
else
regs[MSP] = IAP_RAM_BASE + MIN_RAM_SIZE_FOR_LPC1xxx - RAM_USAGE_FOR_IAP_ROUTINES;
regs[14] = IAP_RAM_BASE | 1;
regs[15] = IAP_ENTRYPOINT;
target_regs_write(target, regs);
@ -142,14 +174,22 @@ lpc11x_iap_call(struct target_s *target, struct flash_param *param, unsigned par
target_mem_read_words(target, (void *)param, IAP_RAM_BASE, sizeof(struct flash_param));
}
static int flash_page_size(struct target_s *target)
{
if (target->driver == lpc8xx_driver)
return 1024;
else
return 4096;
}
static int
lpc11xx_flash_prepare(struct target_s *target, uint32_t addr, int len)
{
/* prepare the sector(s) to be erased */
memset(&flash_pgm.p, 0, sizeof(flash_pgm.p));
flash_pgm.p.command[0] = IAP_CMD_PREPARE;
flash_pgm.p.command[1] = addr / 4096;
flash_pgm.p.command[2] = (addr + len - 1) / 4096;
flash_pgm.p.command[1] = addr / flash_page_size(target);
flash_pgm.p.command[2] = (addr + len - 1) / flash_page_size(target);
lpc11x_iap_call(target, &flash_pgm.p, sizeof(flash_pgm.p));
if (flash_pgm.p.result[0] != IAP_STATUS_CMD_SUCCESS) {
@ -163,7 +203,7 @@ static int
lpc11xx_flash_erase(struct target_s *target, uint32_t addr, int len)
{
if (addr % 4096)
if (addr % flash_page_size(target))
return -1;
/* prepare... */
@ -172,8 +212,8 @@ lpc11xx_flash_erase(struct target_s *target, uint32_t addr, int len)
/* and now erase them */
flash_pgm.p.command[0] = IAP_CMD_ERASE;
flash_pgm.p.command[1] = addr / 4096;
flash_pgm.p.command[2] = (addr + len - 1) / 4096;
flash_pgm.p.command[1] = addr / flash_page_size(target);
flash_pgm.p.command[2] = (addr + len - 1) / flash_page_size(target);
flash_pgm.p.command[3] = 12000; /* XXX safe to assume this? */
lpc11x_iap_call(target, &flash_pgm.p, sizeof(flash_pgm.p));
if (flash_pgm.p.result[0] != IAP_STATUS_CMD_SUCCESS) {
@ -217,7 +257,7 @@ lpc11xx_flash_write(struct target_s *target, uint32_t dest, const uint8_t *src,
chunk_offset = 0;
/* if we are programming the vectors, calculate the magic number */
if (chunk * IAP_PGM_CHUNKSIZE == 0) {
if (chunk == 0) {
uint32_t *w = (uint32_t *)(&flash_pgm.data[0]);
uint32_t sum = 0;
@ -248,6 +288,7 @@ lpc11xx_flash_write(struct target_s *target, uint32_t dest, const uint8_t *src,
flash_pgm.p.command[1] = chunk * IAP_PGM_CHUNKSIZE;
flash_pgm.p.command[2] = IAP_RAM_BASE + offsetof(struct flash_program, data);
flash_pgm.p.command[3] = IAP_PGM_CHUNKSIZE;
/* assuming we are running off IRC - safe lower bound */
flash_pgm.p.command[4] = 12000; /* XXX safe to presume this? */
lpc11x_iap_call(target, &flash_pgm.p, sizeof(flash_pgm));
if (flash_pgm.p.result[0] != IAP_STATUS_CMD_SUCCESS) {