hw/arm/aspeed: Split Palmetto machine into a separate source file for maintainability

This commit moves the OpenPOWER Palmetto BMC machine implementation out of
aspeed.c into a new standalone file aspeed_ast2400_palmetto.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 PALMETTO_BMC_HW_STRAP1 macro definition from into the new file.
- Moved palmetto_bmc_i2c_init() I²C initialization logic into the new file.
- Moved aspeed_machine_palmetto_class_init() and type registration.
- Added aspeed_ast2400_palmetto.c to the build system (meson.build).
- Removed all Palmetto-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>
Link: https://lore.kernel.org/qemu-devel/20251104031325.146374-17-jamin_lin@aspeedtech.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>

diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
index fbd27020bd2db82f1925909d45fab42a9ee0aa08..15d3b045ac444e8822938dd2ebbcd204e2c6932c 100644 (file)
--- a/hw/arm/aspeed.c
+++ b/hw/arm/aspeed.c
@@ -43,20 +43,6 @@ static struct arm_boot_info aspeed_board_binfo = {
 #define ASPEED_RAM_SIZE(sz) (sz)
 #endif
 
-/* Palmetto hardware value: 0x120CE416 */
-#define PALMETTO_BMC_HW_STRAP1 (                                        \
-        SCU_AST2400_HW_STRAP_DRAM_SIZE(DRAM_SIZE_256MB) |               \
-        SCU_AST2400_HW_STRAP_DRAM_CONFIG(2 /* DDR3 with CL=6, CWL=5 */) | \
-        SCU_AST2400_HW_STRAP_ACPI_DIS |                                 \
-        SCU_AST2400_HW_STRAP_SET_CLK_SOURCE(AST2400_CLK_48M_IN) |       \
-        SCU_HW_STRAP_VGA_CLASS_CODE |                                   \
-        SCU_HW_STRAP_LPC_RESET_PIN |                                    \
-        SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_M_S_EN) |                \
-        SCU_AST2400_HW_STRAP_SET_CPU_AHB_RATIO(AST2400_CPU_AHB_RATIO_2_1) | \
-        SCU_HW_STRAP_SPI_WIDTH |                                        \
-        SCU_HW_STRAP_VGA_SIZE_SET(VGA_16M_DRAM) |                       \
-        SCU_AST2400_HW_STRAP_BOOT_MODE(AST2400_SPI_BOOT))
-
 /* AST2600 evb hardware value */
 #define AST2600_EVB_HW_STRAP1 0x000000C0
 #define AST2600_EVB_HW_STRAP2 0x00000003
@@ -312,30 +298,6 @@ static void aspeed_machine_init(MachineState *machine)
     arm_load_kernel(ARM_CPU(first_cpu), machine, &aspeed_board_binfo);
 }
 
-static void palmetto_bmc_i2c_init(AspeedMachineState *bmc)
-{
-    AspeedSoCState *soc = bmc->soc;
-    DeviceState *dev;
-    uint8_t *eeprom_buf = g_malloc0(32 * 1024);
-
-    /*
-     * The palmetto platform expects a ds3231 RTC but a ds1338 is
-     * enough to provide basic RTC features. Alarms will be missing
-     */
-    i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 0), "ds1338", 0x68);
-
-    smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 0), 0x50,
-                          eeprom_buf);
-
-    /* add a TMP423 temperature sensor */
-    dev = DEVICE(i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 2),
-                                         "tmp423", 0x4c));
-    object_property_set_int(OBJECT(dev), "temperature0", 31000, &error_abort);
-    object_property_set_int(OBJECT(dev), "temperature1", 28000, &error_abort);
-    object_property_set_int(OBJECT(dev), "temperature2", 20000, &error_abort);
-    object_property_set_int(OBJECT(dev), "temperature3", 110000, &error_abort);
-}
-
 static void ast2600_evb_i2c_init(AspeedMachineState *bmc)
 {
     AspeedSoCState *soc = bmc->soc;
@@ -1042,23 +1004,6 @@ static void aspeed_machine_class_init(ObjectClass *oc, const void *data)
     aspeed_machine_class_props_init(oc);
 }
 
-static void aspeed_machine_palmetto_class_init(ObjectClass *oc,
-                                               const void *data)
-{
-    MachineClass *mc = MACHINE_CLASS(oc);
-    AspeedMachineClass *amc = ASPEED_MACHINE_CLASS(oc);
-
-    mc->desc       = "OpenPOWER Palmetto BMC (ARM926EJ-S)";
-    amc->soc_name  = "ast2400-a1";
-    amc->hw_strap1 = PALMETTO_BMC_HW_STRAP1;
-    amc->fmc_model = "n25q256a";
-    amc->spi_model = "mx25l25635f";
-    amc->num_cs    = 1;
-    amc->i2c_init  = palmetto_bmc_i2c_init;
-    mc->default_ram_size       = 256 * MiB;
-    aspeed_machine_class_init_cpus_defaults(mc);
-};
-
 static void aspeed_machine_ast2600_evb_class_init(ObjectClass *oc,
                                                   const void *data)
 {
@@ -1405,11 +1350,6 @@ static void aspeed_machine_qcom_firework_class_init(ObjectClass *oc,
 
 static const TypeInfo aspeed_machine_types[] = {
     {
-        .name          = MACHINE_TYPE_NAME("palmetto-bmc"),
-        .parent        = TYPE_ASPEED_MACHINE,
-        .class_init    = aspeed_machine_palmetto_class_init,
-        .interfaces    = arm_machine_interfaces,
-    }, {
         .name          = MACHINE_TYPE_NAME("ast2600-evb"),
         .parent        = TYPE_ASPEED_MACHINE,
         .class_init    = aspeed_machine_ast2600_evb_class_init,

diff --git a/hw/arm/aspeed_ast2400_palmetto.c b/hw/arm/aspeed_ast2400_palmetto.c
new file mode 100644 (file)
index 0000000..776aa43
--- /dev/null
+++ b/hw/arm/aspeed_ast2400_palmetto.c
@@ -0,0 +1,80 @@
+/*
+ * OpenPOWER Palmetto
+ *
+ * Copyright 2016 IBM Corp.
+ *
+ * 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"
+
+/* Palmetto hardware value: 0x120CE416 */
+#define PALMETTO_BMC_HW_STRAP1 (                                        \
+        SCU_AST2400_HW_STRAP_DRAM_SIZE(DRAM_SIZE_256MB) |               \
+        SCU_AST2400_HW_STRAP_DRAM_CONFIG(2 /* DDR3 with CL=6, CWL=5 */) | \
+        SCU_AST2400_HW_STRAP_ACPI_DIS |                                 \
+        SCU_AST2400_HW_STRAP_SET_CLK_SOURCE(AST2400_CLK_48M_IN) |       \
+        SCU_HW_STRAP_VGA_CLASS_CODE |                                   \
+        SCU_HW_STRAP_LPC_RESET_PIN |                                    \
+        SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_M_S_EN) |                \
+        SCU_AST2400_HW_STRAP_SET_CPU_AHB_RATIO(AST2400_CPU_AHB_RATIO_2_1) | \
+        SCU_HW_STRAP_SPI_WIDTH |                                        \
+        SCU_HW_STRAP_VGA_SIZE_SET(VGA_16M_DRAM) |                       \
+        SCU_AST2400_HW_STRAP_BOOT_MODE(AST2400_SPI_BOOT))
+
+static void palmetto_bmc_i2c_init(AspeedMachineState *bmc)
+{
+    AspeedSoCState *soc = bmc->soc;
+    DeviceState *dev;
+    uint8_t *eeprom_buf = g_malloc0(32 * 1024);
+
+    /*
+     * The palmetto platform expects a ds3231 RTC but a ds1338 is
+     * enough to provide basic RTC features. Alarms will be missing
+     */
+    i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 0), "ds1338", 0x68);
+
+    smbus_eeprom_init_one(aspeed_i2c_get_bus(&soc->i2c, 0), 0x50,
+                          eeprom_buf);
+
+    /* add a TMP423 temperature sensor */
+    dev = DEVICE(i2c_slave_create_simple(aspeed_i2c_get_bus(&soc->i2c, 2),
+                                         "tmp423", 0x4c));
+    object_property_set_int(OBJECT(dev), "temperature0", 31000, &error_abort);
+    object_property_set_int(OBJECT(dev), "temperature1", 28000, &error_abort);
+    object_property_set_int(OBJECT(dev), "temperature2", 20000, &error_abort);
+    object_property_set_int(OBJECT(dev), "temperature3", 110000, &error_abort);
+}
+
+static void aspeed_machine_palmetto_class_init(ObjectClass *oc,
+                                               const void *data)
+{
+    MachineClass *mc = MACHINE_CLASS(oc);
+    AspeedMachineClass *amc = ASPEED_MACHINE_CLASS(oc);
+
+    mc->desc       = "OpenPOWER Palmetto BMC (ARM926EJ-S)";
+    amc->soc_name  = "ast2400-a1";
+    amc->hw_strap1 = PALMETTO_BMC_HW_STRAP1;
+    amc->fmc_model = "n25q256a";
+    amc->spi_model = "mx25l25635f";
+    amc->num_cs    = 1;
+    amc->i2c_init  = palmetto_bmc_i2c_init;
+    mc->default_ram_size       = 256 * MiB;
+    aspeed_machine_class_init_cpus_defaults(mc);
+};
+
+static const TypeInfo aspeed_ast2400_palmetto_types[] = {
+    {
+        .name          = MACHINE_TYPE_NAME("palmetto-bmc"),
+        .parent        = TYPE_ASPEED_MACHINE,
+        .class_init    = aspeed_machine_palmetto_class_init,
+        .interfaces    = arm_machine_interfaces,
+    }
+};
+
+DEFINE_TYPES(aspeed_ast2400_palmetto_types)

diff --git a/hw/arm/meson.build b/hw/arm/meson.build
index ea2d24af88a03c22e2c04fd82c53d8ff7a18af3f..e52901108be2d53501e8feea09b185c0ad81018a 100644 (file)
--- 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_ast2400_palmetto.c',
   'aspeed_ast2400_quanta-q71l.c',
   'aspeed_ast2400_supermicrox11.c',
   'aspeed_ast2500_evb.c',