[PATCH v2 20/30] hw/arm/raspi: Add the Raspberry Pi Zero machine

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

Add a Raspberry Pi Zero machine.

  $ qemu-system-arm -M raspi0 -serial stdio \
      -kernel raspberrypi/firmware/boot/kernel.img \
      -dtb raspberrypi/firmware/boot/bcm2708-rpi-zero-w.dtb \
      -append 'printk.time=0 earlycon=pl011,0x20201000 console=ttyAMA0'
  [    0.000000] Booting Linux on physical CPU 0x0
  [    0.000000] Linux version 4.19.69+ (dom@buildbot) (gcc version 4.9.3 (crosstool-NG crosstool-ng-1.22.0-88-g8460611)) #1261 Tue Sep 3 20:21:01 BST 2019
  [    0.000000] CPU: ARMv6-compatible processor [410fb767] revision 7 (ARMv7), cr=00c5387d
  [    0.000000] CPU: VIPT aliasing data cache, unknown instruction cache
  [    0.000000] OF: fdt: Machine model: Raspberry Pi Zero W
  [    0.000000] earlycon: pl11 at MMIO 0x20201000 (options '')
  [    0.000000] bootconsole [pl11] enabled
  [    0.000000] Memory policy: Data cache writeback
  [    0.000000] cma: Reserved 8 MiB at 0x1b800000
  [    0.000000] random: get_random_bytes called from start_kernel+0x8c/0x49c with crng_init=0
  [    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 113680
  [    0.000000] Kernel command line: printk.time=0 earlycon=pl011,0x20201000 console=ttyAMA0 root=/dev/mmcblk0 rootwait
  Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
  Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
  Memory: 434380K/458752K available (6971K kernel code, 635K rwdata, 2080K rodata, 464K init, 797K bss, 16180K reserved, 8192K cma-reserved)
  Virtual kernel memory layout:
      vector  : 0xffff0000 - 0xffff1000   (   4 kB)
      fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
      vmalloc : 0xdc800000 - 0xff800000   ( 560 MB)
      lowmem  : 0xc0000000 - 0xdc000000   ( 448 MB)
      modules : 0xbf000000 - 0xc0000000   (  16 MB)
        .text : 0x(ptrval) - 0x(ptrval)   (6973 kB)
        .init : 0x(ptrval) - 0x(ptrval)   ( 464 kB)
        .data : 0x(ptrval) - 0x(ptrval)   ( 636 kB)
         .bss : 0x(ptrval) - 0x(ptrval)   ( 798 kB)
  SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
  ftrace: allocating 25193 entries in 74 pages
  NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
  sched_clock: 32 bits at 1000kHz, resolution 1000ns, wraps every 2147483647500ns
  clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275 ns
  bcm2835: system timer (irq = 27)
  Console: colour dummy device 80x30
  ...

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
TODO: Add acceptance test
---
 hw/arm/raspi.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/hw/arm/raspi.c b/hw/arm/raspi.c
index 4f7e5ecfab..0d1f15e08c 100644
--- a/hw/arm/raspi.c
+++ b/hw/arm/raspi.c
@@ -88,7 +88,7 @@ static int board_version(uint32_t board_rev)
 static const char *board_soc_type(uint32_t board_rev)
 {
     static const char *soc_types[] = {
-        NULL, TYPE_BCM2836, TYPE_BCM2837,
+        TYPE_BCM2835, TYPE_BCM2836, TYPE_BCM2837,
     };
     int proc_id = board_processor_id(board_rev);
 
@@ -103,7 +103,7 @@ static const char *board_soc_type(uint32_t board_rev)
 static int cores_count(uint32_t board_rev)
 {
     static const int soc_cores_count[] = {
-        0, BCM283X_NCPUS, BCM283X_NCPUS,
+        1, BCM283X_NCPUS, BCM283X_NCPUS,
     };
     int proc_id = board_processor_id(board_rev);
 
@@ -330,6 +330,11 @@ static void raspi_machine_class_init(ObjectClass *oc, void *data)
 
 static const TypeInfo raspi_machine_types[] = {
     {
+        .name           = MACHINE_TYPE_NAME("raspi0"),
+        .parent         = TYPE_RASPI_MACHINE,
+        .class_init     = raspi_machine_class_init,
+        .class_data     = (void *)0x9000c1,
+    }, {
         .name           = MACHINE_TYPE_NAME("raspi2"),
         .parent         = TYPE_RASPI_MACHINE,
         .class_init     = raspi_machine_class_init,
-- 
2.21.1