[PULL 43/46] hw/arm/raspi: Extract the board model from the board revision

[Peter Maydell <peter.maydell@linaro.org>]

From: Philippe Mathieu-Daudé <f4bug@amsat.org>

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

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200208165645.15657-12-f4bug@amsat.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/raspi.c | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/hw/arm/raspi.c b/hw/arm/raspi.c
index f0dcffbc2ef..0537fc0a2d1 100644
--- a/hw/arm/raspi.c
+++ b/hw/arm/raspi.c
@@ -101,6 +101,20 @@ static const char *board_soc_type(uint32_t board_rev)
     return soc_types[proc_id];
 }
 
+static const char *board_type(uint32_t board_rev)
+{
+    static const char *types[] = {
+        "A", "B", "A+", "B+", "2B", "Alpha", "CM1", NULL, "3B", "Zero",
+        "CM3", NULL, "Zero W", "3B+", "3A+", NULL, "CM3+", "4B",
+    };
+    assert(FIELD_EX32(board_rev, REV_CODE, STYLE)); /* Only new style */
+    int bt = FIELD_EX32(board_rev, REV_CODE, TYPE);
+    if (bt >= ARRAY_SIZE(types) || !types[bt]) {
+        return "Unknown";
+    }
+    return types[bt];
+}
+
 static void write_smpboot(ARMCPU *cpu, const struct arm_boot_info *info)
 {
     static const uint32_t smpboot[] = {
@@ -287,7 +301,7 @@ static void raspi2_machine_class_init(ObjectClass *oc, void *data)
     uint32_t board_rev = (uint32_t)(uintptr_t)data;
 
     rmc->board_rev = board_rev;
-    mc->desc = "Raspberry Pi 2B";
+    mc->desc = g_strdup_printf("Raspberry Pi %s", board_type(board_rev));
     mc->init = raspi_machine_init;
     mc->block_default_type = IF_SD;
     mc->no_parallel = 1;
@@ -308,7 +322,7 @@ static void raspi3_machine_class_init(ObjectClass *oc, void *data)
     uint32_t board_rev = (uint32_t)(uintptr_t)data;
 
     rmc->board_rev = board_rev;
-    mc->desc = "Raspberry Pi 3B";
+    mc->desc = g_strdup_printf("Raspberry Pi %s", board_type(board_rev));
     mc->init = raspi_machine_init;
     mc->block_default_type = IF_SD;
     mc->no_parallel = 1;
-- 
2.20.1