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[stm32h7] add revision command which reads the `DBGMCU_IDC` register 

blackmagic PR #476
This commit is contained in:
Richard Meadows 2019-05-21 20:57:01 +01:00 committed by UweBonnes
parent c336c300a3
commit 24a7b8b2bf
1 changed files with 44 additions and 0 deletions
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44
src/target/stm32h7.c
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@ -35,6 +35,7 @@ static bool stm32h7_cmd_erase_mass(target *t);
static bool stm32h7_uid(target *t);
static bool stm32h7_crc(target *t);
static bool stm32h7_cmd_psize(target *t, int argc, char *argv[]);
static bool stm32h7_cmd_rev(target *t);
const struct command_s stm32h7_cmd_list[] = {
{"erase_mass", (cmd_handler)stm32h7_cmd_erase_mass,
@ -45,6 +46,8 @@ const struct command_s stm32h7_cmd_list[] = {
"Configure flash write parallelism: (x8|x16|x32|x64(default))"},
{"uid", (cmd_handler)stm32h7_uid, "Print unique device ID"},
{"crc", (cmd_handler)stm32h7_crc, "Print CRC of both banks"},
{"revision", (cmd_handler)stm32h7_cmd_rev,
"Returns the Device ID and Revision"},
{NULL, NULL, NULL}
};
@ -127,6 +130,7 @@ enum stm32h7_regs
#define DBGMCU_IDCODE 0x5c001000
/* Access via 0xe00e1000 does not show device! */
#define DBGMCU_IDC (DBGMCU_IDCODE + 0)
#define DBGMCU_CR (DBGMCU_IDCODE + 4)
#define DBGSLEEP_D1 (1 << 0)
#define DBGSTOP_D1 (1 << 1)
@ -515,3 +519,43 @@ static bool stm32h7_cmd_psize(target *t, int argc, char *argv[])
}
return true;
}
static const struct stm32h7xx_rev {
uint32_t rev_id;
char revision;
} stm32h7xx_revisions[] = {
{ 0x1000, 'A' },
{ 0x1001, 'Z' },
{ 0x1003, 'Y' },
{ 0x2001, 'X' },
{ 0x2003, 'V' }
};
static bool stm32h7_cmd_rev(target *t)
{
/* DBGMCU identity code register */
uint32_t dbgmcu_idc = target_mem_read32(t, DBGMCU_IDC);
uint16_t rev_id = (dbgmcu_idc >> 16) & 0xFFFF;
uint16_t dev_id = dbgmcu_idc & 0xFFF;
/* Print device */
switch (dev_id) {
case 0x450:
tc_printf(t, "STM32H742/743/753/750\n");
break;
default:
tc_printf(t, "Unknown STM32H7. This driver may not support it!\n");
}
/* Print revision */
char rev = '?';
for (size_t i = 0;
i < sizeof(stm32h7xx_revisions)/sizeof(struct stm32h7xx_rev); i++) {
/* Check for matching revision */
if (stm32h7xx_revisions[i].rev_id == rev_id) {
rev = stm32h7xx_revisions[i].revision;
}
}
tc_printf(t, "Revision %c\n", rev);
return true;
}