The Witherspoon boards are OpenPOWER system hosting POWER9 Processors.
Let's add support for their BMC including a couple of I2C devices as
found on real HW.
Signed-off-by: Cédric Le Goater <c...@kaod.org>
Reviewed-by: Andrew Jeffery <and...@aj.id.au>
---
Changes since v2:
- removed 'ignore_memory_transaction_failures' flag on the machine.
Will require a couple of fixes in the legacy U-Boot accessing wrongly
the bss before the DRAM is initialized.
The HW drops the write access surely because the SMC controller is
configured in autoread mode by default. I don't know how to model
this behavior in QEMU. I think we would need suppport to boot from
a MMIO region.
- Added a comment on the I2C device used.
hw/arm/aspeed.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 49 insertions(+)
diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
index ab895ad490af..5e0b9a184b9c 100644
--- a/hw/arm/aspeed.c
+++ b/hw/arm/aspeed.c
@@ -46,6 +46,7 @@ enum {
PALMETTO_BMC,
AST2500_EVB,
ROMULUS_BMC,
+ WITHERSPOON_BMC,
};
/* Palmetto hardware value: 0x120CE416 */
@@ -83,8 +84,12 @@ enum {
SCU_AST2500_HW_STRAP_ACPI_ENABLE | \
SCU_HW_STRAP_SPI_MODE(SCU_HW_STRAP_SPI_MASTER))
+/* Witherspoon hardware value: 0xF10AD216 (but use romulus definition) */
+#define WITHERSPOON_BMC_HW_STRAP1 ROMULUS_BMC_HW_STRAP1
+
static void palmetto_bmc_i2c_init(AspeedBoardState *bmc);
static void ast2500_evb_i2c_init(AspeedBoardState *bmc);
+static void witherspoon_bmc_i2c_init(AspeedBoardState *bmc);
static const AspeedBoardConfig aspeed_boards[] = {
[PALMETTO_BMC] = {
@@ -110,6 +115,14 @@ static const AspeedBoardConfig aspeed_boards[] = {
.spi_model = "mx66l1g45g",
.num_cs = 2,
},
+ [WITHERSPOON_BMC] = {
+ .soc_name = "ast2500-a1",
+ .hw_strap1 = WITHERSPOON_BMC_HW_STRAP1,
+ .fmc_model = "mx25l25635e",
+ .spi_model = "mx66l1g45g",
+ .num_cs = 2,
+ .i2c_init = witherspoon_bmc_i2c_init,
+ },
};
#define FIRMWARE_ADDR 0x0
@@ -337,11 +350,47 @@ static const TypeInfo romulus_bmc_type = {
.class_init = romulus_bmc_class_init,
};
+static void witherspoon_bmc_i2c_init(AspeedBoardState *bmc)
+{
+ AspeedSoCState *soc = &bmc->soc;
+
+ i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 4), "tmp423", 0x4c);
+ i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 5), "tmp423", 0x4c);
+
+ /* The Witherspoon expects a TMP275 but a TMP105 is compatible */
+ i2c_create_slave(aspeed_i2c_get_bus(DEVICE(&soc->i2c), 9), "tmp105", 0x4a);
+}
+
+static void witherspoon_bmc_init(MachineState *machine)
+{
+ aspeed_board_init(machine, &aspeed_boards[WITHERSPOON_BMC]);
+}
+
+static void witherspoon_bmc_class_init(ObjectClass *oc, void *data)
+{
+ MachineClass *mc = MACHINE_CLASS(oc);
+
+ mc->desc = "OpenPOWER Witherspoon BMC (ARM1176)";
+ mc->init = witherspoon_bmc_init;
+ mc->max_cpus = 1;
+ mc->no_sdcard = 1;
+ mc->no_floppy = 1;
+ mc->no_cdrom = 1;
+ mc->no_parallel = 1;
+}
+
+static const TypeInfo witherspoon_bmc_type = {
+ .name = MACHINE_TYPE_NAME("witherspoon-bmc"),
+ .parent = TYPE_MACHINE,
+ .class_init = witherspoon_bmc_class_init,
+};
+
static void aspeed_machine_init(void)
{
type_register_static(&palmetto_bmc_type);
type_register_static(&ast2500_evb_type);
type_register_static(&romulus_bmc_type);
+ type_register_static(&witherspoon_bmc_type);
}
type_init(aspeed_machine_init)
--
2.13.6
