[PULL 03/25] aspeed: Add Supermicro X11 SPI machine type

[Cédric Le Goater]

From: Guenter Roeck <linux@roeck-us.net>

supermicrox11-bmc is configured with ast2400-a1 SoC. This does not match
the Supermicro documentation for X11 BMCs, and it does not match the
devicetree file in the Linux kernel.

As it turns out, some Supermicro X11 motherboards use AST2400 SoCs,
while others use AST2500.

Introduce new machine type supermicrox11-spi-bmc with AST2500 SoC
to match the devicetree description in the Linux kernel. Hardware
configuration details for this machine type are guesswork and taken
from defaults as well as from the Linux kernel devicetree file.

The new machine type was tested with aspeed-bmc-supermicro-x11spi.dts
from the Linux kernel and with Linux versions 6.0.3 and 6.1-rc2.
Linux booted successfully from initrd and from both SPI interfaces.
Ethernet interfaces were confirmed to be operational.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Link: https://lore.kernel.org/r/20221025165109.1226001-1-linux@roeck-us.net
[ clg: Renamed machine to 'supermicro-x11spi-bmc' ]
Message-Id: <20221025165109.1226001-1-linux@roeck-us.net>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 hw/arm/aspeed.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
index 55f114ef72..0c8c3be413 100644
--- a/hw/arm/aspeed.c
+++ b/hw/arm/aspeed.c
@@ -71,6 +71,16 @@ struct AspeedMachineState {
         SCU_HW_STRAP_VGA_SIZE_SET(VGA_16M_DRAM) |                       \
         SCU_AST2400_HW_STRAP_BOOT_MODE(AST2400_SPI_BOOT))
 
+/* TODO: Find the actual hardware value */
+#define SUPERMICRO_X11SPI_BMC_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_SPI_WIDTH |                                        \
+        SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_M_S_EN))
+
 /* AST2500 evb hardware value: 0xF100C2E6 */
 #define AST2500_EVB_HW_STRAP1 ((                                        \
         AST2500_HW_STRAP1_DEFAULTS |                                    \
@@ -1141,6 +1151,25 @@ static void 
aspeed_machine_supermicrox11_bmc_class_init(ObjectClass *oc,
     mc->default_ram_size = 256 * MiB;
 }
 
+static void aspeed_machine_supermicro_x11spi_bmc_class_init(ObjectClass *oc,
+                                                            void *data)
+{
+    MachineClass *mc = MACHINE_CLASS(oc);
+    AspeedMachineClass *amc = ASPEED_MACHINE_CLASS(oc);
+
+    mc->desc       = "Supermicro X11 SPI BMC (ARM1176)";
+    amc->soc_name  = "ast2500-a1";
+    amc->hw_strap1 = SUPERMICRO_X11SPI_BMC_HW_STRAP1;
+    amc->fmc_model = "mx25l25635e";
+    amc->spi_model = "mx25l25635e";
+    amc->num_cs    = 1;
+    amc->macs_mask = ASPEED_MAC0_ON | ASPEED_MAC1_ON;
+    amc->i2c_init  = palmetto_bmc_i2c_init;
+    mc->default_ram_size = 512 * MiB;
+    mc->default_cpus = mc->min_cpus = mc->max_cpus =
+        aspeed_soc_num_cpus(amc->soc_name);
+}
+
 static void aspeed_machine_ast2500_evb_class_init(ObjectClass *oc, void *data)
 {
     MachineClass *mc = MACHINE_CLASS(oc);
@@ -1522,6 +1551,10 @@ static const TypeInfo aspeed_machine_types[] = {
         .name          = MACHINE_TYPE_NAME("supermicrox11-bmc"),
         .parent        = TYPE_ASPEED_MACHINE,
         .class_init    = aspeed_machine_supermicrox11_bmc_class_init,
+    }, {
+        .name          = MACHINE_TYPE_NAME("supermicro-x11spi-bmc"),
+        .parent        = TYPE_ASPEED_MACHINE,
+        .class_init    = aspeed_machine_supermicro_x11spi_bmc_class_init,
     }, {
         .name          = MACHINE_TYPE_NAME("ast2500-evb"),
         .parent        = TYPE_ASPEED_MACHINE,
-- 
2.39.1