flash/stm32l4: add support of STM32G4 category 4 devices (G491/G4A1)

STM32G4 cat.4 devices are up to 512 KB of flash memory (single bank)
organized into pages of 2KB each.

Reference: RM0440 rev.4

Change-Id: I0f510e2806c8f824fff8083e2d4f90d68f01046b
Signed-off-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
Reviewed-on: http://openocd.zylin.com/5793
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>

diff --git a/src/flash/nor/stm32l4x.c b/src/flash/nor/stm32l4x.c
index 379f1b4b38691b4ac189186cf710c2ca56b3eb4a..9bdc2dbcad78dbceef063b5d3a906a92375e51f4 100644 (file)
--- a/src/flash/nor/stm32l4x.c
+++ b/src/flash/nor/stm32l4x.c
@@ -94,7 +94,7 @@
 /*
  * STM32G4xxx series for reference.
  *
- * RM0440 (STM32G43x/44x/47x/48x)
+ * RM0440 (STM32G43x/44x/47x/48x/49x/4Ax)
  * http://www.st.com/resource/en/reference_manual/dm00355726.pdf
  *
  * Cat. 2 devices have single bank only, page size is 2kByte.
@@ -104,6 +104,8 @@
  *
  * Bank mode is controlled by bit 22 (DBANK) in option bytes register.
  * Both banks are treated as a single OpenOCD bank.
+ *
+ * Cat. 4 devices have single bank only, page size is 2kByte.
  */
 
 /* Erase time can be as high as 25ms, 10x this and assume it's toast... */
@@ -184,6 +186,10 @@ static const struct stm32l4_rev stm32_471_revs[] = {
        { 0x1001, "Z" },
 };
 
+static const struct stm32l4_rev stm32_479_revs[] = {
+       { 0x1000, "A" },
+};
+
 static const struct stm32l4_rev stm32_495_revs[] = {
        { 0x2001, "2.1" },
 };
@@ -307,6 +313,16 @@ static const struct stm32l4_part_info stm32l4_parts[] = {
          .flash_regs_base       = 0x40022000,
          .fsize_addr            = 0x1FFF75E0,
        },
+       {
+         .id                    = 0x479,
+         .revs                  = stm32_479_revs,
+         .num_revs              = ARRAY_SIZE(stm32_479_revs),
+         .device_str            = "STM32G49/G4Axx",
+         .max_flash_size_kb     = 512,
+         .has_dual_bank         = false,
+         .flash_regs_base       = 0x40022000,
+         .fsize_addr            = 0x1FFF75E0,
+       },
        {
          .id                    = 0x495,
          .revs                  = stm32_495_revs,
@@ -952,6 +968,7 @@ static int stm32l4_probe(struct flash_bank *bank)
        case 0x464: /* STM32L41/L42xx */
        case 0x466: /* STM32G03/G04xx */
        case 0x468: /* STM32G43/G44xx */
+       case 0x479: /* STM32G49/G4Axx */
        case 0x497: /* STM32WLEx */
                /* single bank flash */
                page_size_kb = 2;