hw/arm/raspi: Extract the processor type from the board revision

The board revision encode the processor type. Add a helper
to extract the type, and use it.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200208165645.15657-6-f4bug@amsat.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 16 insertions, 2 deletions

diff --git a/hw/arm/raspi.c b/hw/arm/raspi.c
index dcd8d2d..7a2ca97 100644
--- a/hw/arm/raspi.c
+++ b/hw/arm/raspi.c
@@ -67,6 +67,21 @@ static int board_version(uint32_t board_rev)
     return board_processor_id(board_rev) + 1;
 }
 
+static const char *board_soc_type(uint32_t board_rev)
+{
+    static const char *soc_types[] = {
+        NULL, TYPE_BCM2836, TYPE_BCM2837,
+    };
+    int proc_id = board_processor_id(board_rev);
+
+    if (proc_id >= ARRAY_SIZE(soc_types) || !soc_types[proc_id]) {
+        error_report("Unsupported processor id '%d' (board revision: 0x%x)",
+                     proc_id, board_rev);
+        exit(1);
+    }
+    return soc_types[proc_id];
+}
+
 static void write_smpboot(ARMCPU *cpu, const struct arm_boot_info *info)
 {
     static const uint32_t smpboot[] = {
@@ -213,8 +228,7 @@ static void raspi_init(MachineState *machine, uint32_t board_rev)
     }
 
     object_initialize_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc),
-                            version == 3 ? TYPE_BCM2837 : TYPE_BCM2836,
-                            &error_abort, NULL);
+                            board_soc_type(board_rev), &error_abort, NULL);
 
     /* Allocate and map RAM */
     memory_region_allocate_system_memory(&s->ram, OBJECT(machine), "ram",