stm32f1: Added support for AT32F435/437

blackmagic-debug · Jul 14, 2023 · 59fd665 · 59fd665
1 parent dc44228
commit 59fd665
Showing 1 changed file with 89 additions and 0 deletions.
diff --git a/src/target/stm32f1.c b/src/target/stm32f1.c
@@ -103,6 +103,8 @@ static bool stm32f1_mass_erase(target_s *target);
 #define AT32F4x_IDCODE_PART_MASK   0x00000fffU
 #define AT32F41_SERIES             0x70030000U
 #define AT32F40_SERIES             0x70050000U
+#define AT32F43_SERIES_4K          0x70084000U
+#define AT32F43_SERIES_2K          0x70083000U
 
 #define DBGMCU_IDCODE_MM32L0 0x40013400U
 #define DBGMCU_IDCODE_MM32F3 0x40007080U
@@ -254,6 +256,91 @@ static bool at32f41_detect(target_s *target, const uint16_t part_id)
 	return true;
 }
 
+static bool at32f43_detect(target_s *target, const uint16_t part_id)
+{
+	/* AT32F435 EOPB0 ZW/NZW split reconfiguration unsupported,
+	 * assuming default split ZW=256 SRAM=384.
+	 * AT32F437 also have a working "EMAC" (Ethernet MAC)
+	 */
+	uint32_t flash_size_kb = 0;
+	uint32_t sector_size = 0;
+	switch (part_id) {
+	// 0x70084000U parts with 4KB sectors:
+	case 0x0540U: // LQFP144
+	case 0x0543U: // LQFP100
+	case 0x0546U: // LQFP64
+	case 0x0549U: // LQFP48
+	case 0x054cU: // QFN48
+	case 0x054fU: // LQFP144 w/Eth
+	case 0x0552U: // LQFP100 w/Eth
+	case 0x0555U: // LQFP64 w/Eth
+		// Flash (G): 4032 KB in 2 banks (2048+1984), 4KB per sector.
+		flash_size_kb = 4032;
+		sector_size = 4096;
+		break;
+	case 0x0598U: // LQFP144
+	case 0x0599U: // LQFP100
+	case 0x059aU: // LQFP64
+	case 0x059bU: // LQFP48
+	case 0x059cU: // QFN48
+	case 0x059dU: // LQFP144 w/Eth
+	case 0x059eU: // LQFP100 w/Eth
+	case 0x059fU: // LQFP64 w/Eth
+		// Flash (D): 448 KB, only bank 1, 4KB per sector.
+		flash_size_kb = 448;
+		sector_size = 4096;
+		break;
+	// 0x70083000U parts with 2KB sectors:
+	case 0x0341U: // LQFP144
+	case 0x0344U: // LQFP100
+	case 0x0347U: // LQFP64
+	case 0x034aU: // LQFP48
+	case 0x034dU: // QFN48
+	case 0x0350U: // LQFP144 w/Eth
+	case 0x0353U: // LQFP100 w/Eth
+	case 0x0356U: // LQFP64 w/Eth
+		// Flash (M): 1024 KB in 2 banks (equal), 2KB per sector.
+		flash_size_kb = 1024;
+		sector_size = 2048;
+		break;
+	case 0x0242U: // LQFP144
+	case 0x0245U: // LQFP100
+	case 0x0248U: // LQFP64
+	case 0x024bU: // LQFP48
+	case 0x024eU: // QFN48
+	case 0x0251U: // LQFP144 w/Eth
+	case 0x0254U: // LQFP100 w/Eth
+	case 0x0257U: // LQFP64 w/Eth
+		// Flash (C): 256 KB, only bank 1, 2KB per sector.
+		flash_size_kb = 256;
+		sector_size = 2048;
+		break;
+	default:
+		return false;
+	}
+	/*
+	 * Arterytek F43x Flash controller has BLKERS (1<<3U).
+	 * Block erase operates on 64 KB at once for all parts.
+	 * Using here only sector erase (page erase) for compatibility.
+	 */
+	stm32f1_add_flash(target, 0x08000000, flash_size_kb * 1024U, sector_size);
+	// SRAM1 (64KB) can be remapped to 0x10000000.
+	target_add_ram(target, 0x20000000, 64U * 1024U);
+	// SRAM2 (384-64=320 KB default).
+	target_add_ram(target, 0x20010000, 320U * 1024U);
+	/*
+	 * SRAM total is adjustable between 128 KB and 512 KB (max).
+	 * Out of 640 KB SRAM present on silicon, at least 128 KB are always
+	 * dedicated to "zero-wait-state Flash". ZW region is limited by
+	 * specific part flash capacity (for 256, 448 KB) or at 512 KB.
+	 * AT32F435ZMT default EOPB0=0xffff05fa, 
+	 * EOPB[0:2]=0b010 for 384 KB SRAM + 256 KB zero-wait-state flash.
+	 */
+	target->driver = "AT32F435";
+	target->mass_erase = stm32f1_mass_erase;
+	return true;
+}
+
 /* Identify AT32F4x devices (Cortex-M4) */
 bool at32fxx_probe(target_s *target)
 {
@@ -270,6 +357,8 @@ bool at32fxx_probe(target_s *target)
 		return at32f40_detect(target, part_id);
 	if (series == AT32F41_SERIES)
 		return at32f41_detect(target, part_id);
+	if (series == AT32F43_SERIES_4K || series == AT32F43_SERIES_2K)
+		return at32f43_detect(target, part_id);
 	return false;
 }