[PATCH v2 8/8] aspeed: Add AST2600 (BMC) to fby35

[Peter Delevoryas]

You can test booting the BMC with both '-device loader' and '-drive
file'. This is necessary because of how the fb-openbmc boot sequence
works (jump to 0x20000000 after U-Boot SPL).

    wget 
https://github.com/facebook/openbmc/releases/download/openbmc-e2294ff5d31d/fby35.mtd
    qemu-system-arm -machine fby35 -nographic \
        -device loader,file=fby35.mtd,addr=0,cpu-num=0 -drive 
file=fby35.mtd,format=raw,if=mtd

Signed-off-by: Peter Delevoryas <p...@fb.com>
---
 hw/arm/fby35.c | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/hw/arm/fby35.c b/hw/arm/fby35.c
index dc1ae8e62a..1e24cbf3f8 100644
--- a/hw/arm/fby35.c
+++ b/hw/arm/fby35.c
@@ -21,17 +21,53 @@
  */
 
 #include "qemu/osdep.h"
+#include "qemu/units.h"
+#include "qapi/error.h"
 #include "hw/boards.h"
+#include "hw/arm/aspeed_soc.h"
 
 #define TYPE_FBY35 MACHINE_TYPE_NAME("fby35")
 OBJECT_DECLARE_SIMPLE_TYPE(Fby35State, FBY35);
 
 struct Fby35State {
     MachineState parent_obj;
+
+    MemoryRegion bmc_memory;
+    MemoryRegion bmc_dram;
+    MemoryRegion bmc_boot_rom;
+
+    AspeedSoCState bmc;
 };
 
+static void fby35_bmc_init(Fby35State *s)
+{
+    uint32_t boot_rom_size;
+
+    memory_region_init(&s->bmc_memory, OBJECT(s), "bmc-memory", UINT64_MAX);
+    memory_region_init_ram(&s->bmc_dram, OBJECT(s), "bmc-dram", 2 * GiB, 
&error_abort);
+
+    object_initialize_child(OBJECT(s), "bmc", &s->bmc, "ast2600-a3");
+    object_property_set_int(OBJECT(&s->bmc), "ram-size", s->bmc_dram.size, 
&error_abort);
+    object_property_set_link(OBJECT(&s->bmc), "memory", 
OBJECT(&s->bmc_memory), &error_abort);
+    object_property_set_link(OBJECT(&s->bmc), "dram", OBJECT(&s->bmc_dram), 
&error_abort);
+    object_property_set_int(OBJECT(&s->bmc), "hw-strap1", 0x000000C0, 
&error_abort);
+    object_property_set_int(OBJECT(&s->bmc), "hw-strap2", 0x00000003, 
&error_abort);
+    object_property_set_int(OBJECT(&s->bmc), "uart-default", ASPEED_DEV_UART5, 
&error_abort);
+    qdev_realize(DEVICE(&s->bmc), NULL, &error_abort);
+
+    boot_rom_size = ASPEED_SMC_GET_CLASS(&s->bmc.fmc)->segments[0].size;
+
+    memory_region_init_rom(&s->bmc_boot_rom, OBJECT(s), "bmc-boot-rom", 
boot_rom_size, &error_abort);
+    memory_region_add_subregion(&s->bmc_memory, 0, &s->bmc_boot_rom);
+
+    aspeed_board_init_flashes(&s->bmc.fmc, "n25q00", 2, 0);
+}
+
 static void fby35_init(MachineState *machine)
 {
+    Fby35State *s = FBY35(machine);
+
+    fby35_bmc_init(s);
 }
 
 static void fby35_class_init(ObjectClass *oc, void *data)
@@ -40,6 +76,9 @@ static void fby35_class_init(ObjectClass *oc, void *data)
 
     mc->desc = "Meta Platforms fby35";
     mc->init = fby35_init;
+    mc->no_floppy = 1;
+    mc->no_cdrom = 1;
+    mc->min_cpus = mc->max_cpus = mc->default_cpus = 2;
 }
 
 static const TypeInfo fby35_types[] = {
-- 
2.30.2