[PATCH v3 13/30] hw/arm/aspeed: Split AST2500 EVB machine into a separate source file for maintainability

[Jamin Lin via <qemu-devel@nongnu.org>]

This commit moves the AST2500 EVB machine implementation out of
aspeed.c into a new standalone file aspeed_ast2500_evb.c.

This refactor continues the modularization effort for Aspeed platform
support, placing each board’s logic in its own dedicated source file.
It improves maintainability, readability, and simplifies future
development for new platforms without cluttering aspeed.c.

Key updates include:

- Moved AST2500_EVB_HW_STRAP1 macro definition into the new file.
- Moved ast2500_evb_i2c_init() I²C initialization logic.
- Moved aspeed_machine_ast2500_evb_class_init() and type registration.
- Added aspeed_ast2500_evb.c to the build system (meson.build).
- Removed all AST2500 EVB–specific code and macros from aspeed.c.

No functional changes.

Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
---
 hw/arm/aspeed.c             | 46 -------------------------
 hw/arm/aspeed_ast2500_evb.c | 68 +++++++++++++++++++++++++++++++++++++
 hw/arm/meson.build          |  1 +
 3 files changed, 69 insertions(+), 46 deletions(-)
 create mode 100644 hw/arm/aspeed_ast2500_evb.c

diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
index e1fa95b2c3..7d26d9241c 100644
--- a/hw/arm/aspeed.c
+++ b/hw/arm/aspeed.c
@@ -71,17 +71,6 @@ static struct arm_boot_info aspeed_board_binfo = {
         SCU_HW_STRAP_VGA_SIZE_SET(VGA_16M_DRAM) |                       \
         SCU_AST2400_HW_STRAP_BOOT_MODE(AST2400_SPI_BOOT))
 
-/* AST2500 evb hardware value: 0xF100C2E6 */
-#define AST2500_EVB_HW_STRAP1 ((                                        \
-        AST2500_HW_STRAP1_DEFAULTS |                                    \
-        SCU_AST2500_HW_STRAP_SPI_AUTOFETCH_ENABLE |                     \
-        SCU_AST2500_HW_STRAP_GPIO_STRAP_ENABLE |                        \
-        SCU_AST2500_HW_STRAP_UART_DEBUG |                               \
-        SCU_AST2500_HW_STRAP_DDR4_ENABLE |                              \
-        SCU_HW_STRAP_MAC1_RGMII |                                       \
-        SCU_HW_STRAP_MAC0_RGMII) &                                      \
-        ~SCU_HW_STRAP_2ND_BOOT_WDT)
-
 /* Quanta-Q71l hardware value */
 #define QUANTA_Q71L_BMC_HW_STRAP1 (                                     \
         SCU_AST2400_HW_STRAP_DRAM_SIZE(DRAM_SIZE_128MB) |               \
@@ -406,19 +395,6 @@ static void quanta_q71l_bmc_i2c_init(AspeedMachineState *bmc)
     /* TODO: i2c-8: Add BMC FRU eeprom@50 */
 }
 
-static void ast2500_evb_i2c_init(AspeedMachineState *bmc)
-{
-    AspeedSoCState *soc = bmc->soc;
-    uint8_t *eeprom_buf = g_malloc0(8 * 1024);
-
-    smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 3), 0x50,
-                          eeprom_buf);
-
-    /* The AST2500 EVB expects a LM75 but a TMP105 is compatible */
-    i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 7),
-                     TYPE_TMP105, 0x4d);
-}
-
 static void ast2600_evb_i2c_init(AspeedMachineState *bmc)
 {
     AspeedSoCState *soc = bmc->soc;
@@ -1177,23 +1153,6 @@ static void aspeed_machine_supermicrox11_bmc_class_init(ObjectClass *oc,
     aspeed_machine_class_init_cpus_defaults(mc);
 }
 
-static void aspeed_machine_ast2500_evb_class_init(ObjectClass *oc,
-                                                  const void *data)
-{
-    MachineClass *mc = MACHINE_CLASS(oc);
-    AspeedMachineClass *amc = ASPEED_MACHINE_CLASS(oc);
-
-    mc->desc       = "Aspeed AST2500 EVB (ARM1176)";
-    amc->soc_name  = "ast2500-a1";
-    amc->hw_strap1 = AST2500_EVB_HW_STRAP1;
-    amc->fmc_model = "mx25l25635e";
-    amc->spi_model = "mx25l25635f";
-    amc->num_cs    = 1;
-    amc->i2c_init  = ast2500_evb_i2c_init;
-    mc->default_ram_size       = 512 * MiB;
-    aspeed_machine_class_init_cpus_defaults(mc);
-};
-
 static void aspeed_machine_ast2600_evb_class_init(ObjectClass *oc,
                                                   const void *data)
 {
@@ -1549,11 +1508,6 @@ static const TypeInfo aspeed_machine_types[] = {
         .parent        = TYPE_ASPEED_MACHINE,
         .class_init    = aspeed_machine_supermicrox11_bmc_class_init,
         .interfaces    = arm_machine_interfaces,
-    }, {
-        .name          = MACHINE_TYPE_NAME("ast2500-evb"),
-        .parent        = TYPE_ASPEED_MACHINE,
-        .class_init    = aspeed_machine_ast2500_evb_class_init,
-        .interfaces    = arm_machine_interfaces,
     }, {
         .name          = MACHINE_TYPE_NAME("ast2600-evb"),
         .parent        = TYPE_ASPEED_MACHINE,
diff --git a/hw/arm/aspeed_ast2500_evb.c b/hw/arm/aspeed_ast2500_evb.c
new file mode 100644
index 0000000000..3131ed6856
--- /dev/null
+++ b/hw/arm/aspeed_ast2500_evb.c
@@ -0,0 +1,68 @@
+/*
+ * ASPEED AST2500 EVB
+ *
+ * Copyright (C) 2025 ASPEED Technology Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "hw/arm/machines-qom.h"
+#include "hw/arm/aspeed.h"
+#include "hw/arm/aspeed_soc.h"
+#include "hw/i2c/smbus_eeprom.h"
+#include "hw/sensor/tmp105.h"
+
+/* AST2500 evb hardware value: 0xF100C2E6 */
+#define AST2500_EVB_HW_STRAP1 ((                                        \
+        AST2500_HW_STRAP1_DEFAULTS |                                    \
+        SCU_AST2500_HW_STRAP_SPI_AUTOFETCH_ENABLE |                     \
+        SCU_AST2500_HW_STRAP_GPIO_STRAP_ENABLE |                        \
+        SCU_AST2500_HW_STRAP_UART_DEBUG |                               \
+        SCU_AST2500_HW_STRAP_DDR4_ENABLE |                              \
+        SCU_HW_STRAP_MAC1_RGMII |                                       \
+        SCU_HW_STRAP_MAC0_RGMII) &                                      \
+        ~SCU_HW_STRAP_2ND_BOOT_WDT)
+
+static void ast2500_evb_i2c_init(AspeedMachineState *bmc)
+{
+    AspeedSoCState *soc = bmc->soc;
+    uint8_t *eeprom_buf = g_malloc0(8 * 1024);
+
+    smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 3), 0x50,
+                          eeprom_buf);
+
+    /* The AST2500 EVB expects a LM75 but a TMP105 is compatible */
+    i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 7),
+                     TYPE_TMP105, 0x4d);
+}
+
+static void aspeed_machine_ast2500_evb_class_init(ObjectClass *oc,
+                                                  const void *data)
+{
+    MachineClass *mc = MACHINE_CLASS(oc);
+    AspeedMachineClass *amc = ASPEED_MACHINE_CLASS(oc);
+
+    mc->desc       = "Aspeed AST2500 EVB (ARM1176)";
+    amc->soc_name  = "ast2500-a1";
+    amc->hw_strap1 = AST2500_EVB_HW_STRAP1;
+    amc->fmc_model = "mx25l25635e";
+    amc->spi_model = "mx25l25635f";
+    amc->num_cs    = 1;
+    amc->i2c_init  = ast2500_evb_i2c_init;
+    mc->default_ram_size       = 512 * MiB;
+    aspeed_machine_class_init_cpus_defaults(mc);
+};
+
+static const TypeInfo aspeed_ast2500_evb_types[] = {
+    {
+        .name          = MACHINE_TYPE_NAME("ast2500-evb"),
+        .parent        = TYPE_ASPEED_MACHINE,
+        .class_init    = aspeed_machine_ast2500_evb_class_init,
+        .interfaces    = arm_machine_interfaces,
+    }
+};
+
+DEFINE_TYPES(aspeed_ast2500_evb_types)
+
diff --git a/hw/arm/meson.build b/hw/arm/meson.build
index 76a456c33f..021daba286 100644
--- a/hw/arm/meson.build
+++ b/hw/arm/meson.build
@@ -44,6 +44,7 @@ arm_ss.add(when: 'CONFIG_ASPEED_SOC', if_true: files(
   'aspeed.c',
   'aspeed_soc_common.c',
   'aspeed_ast2400.c',
+  'aspeed_ast2500_evb.c',
   'aspeed_ast2500_fp5280g2.c',
   'aspeed_ast2500_g220a.c',
   'aspeed_ast2500_romulus.c',
-- 
2.43.0