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arm: drop intermediate cpu_model -> cpu type parsing and use cpu type directly

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there are 2 use cases to deal with:
  1: fixed CPU models per board/soc
  2: boards with user configurable cpu_model and fallback to
     default cpu_model if user hasn't specified one explicitly

For the 1st
  drop intermediate cpu_model parsing and use const cpu type
  directly, which replaces:
     typename = object_class_get_name(
           cpu_class_by_name(TYPE_ARM_CPU, cpu_model))
     object_new(typename)
  with
     object_new(FOO_CPU_TYPE_NAME)
  or
     cpu_generic_init(BASE_CPU_TYPE, "my cpu model")
  with
     cpu_create(FOO_CPU_TYPE_NAME)

as result 1st use case doesn't have to invoke not necessary
translation and not needed code is removed.

For the 2nd
 1: set default cpu type with MachineClass::default_cpu_type and
 2: use generic cpu_model parsing that done before machine_init()
    is run and:
    2.1: drop custom cpu_model parsing where pattern is:
       typename = object_class_get_name(
           cpu_class_by_name(TYPE_ARM_CPU, cpu_model))
       [parse_features(typename, cpu_model, &err) ]

    2.2: or replace cpu_generic_init() which does what
         2.1 does + create_cpu(typename) with just
         create_cpu(machine->cpu_type)
as result cpu_name -> cpu_type translation is done using
generic machine code one including parsing optional features
if supported/present (removes a bunch of duplicated cpu_model
parsing code) and default cpu type is defined in an uniform way
within machine_class_init callbacks instead of adhoc places
in boadr's machine_init code.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <1505318697-77161-6-git-send-email-imammedo@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Igor Mammedov 2017-09-13 18:04:57 +02:00 • committed by Eduardo Habkost
parent 311ca98d16
commit ba1ba5cca3
33 changed files with 115 additions and 265 deletions
Download patch file Download diff file Expand all files Collapse all files

10
hw/arm/strongarm.c
View file

@ -1581,23 +1581,19 @@ static const TypeInfo strongarm_ssp_info = {
/* Main CPU functions */
StrongARMState *sa1110_init(MemoryRegion *sysmem,
unsigned int sdram_size, const char *rev)
unsigned int sdram_size, const char *cpu_type)
{
StrongARMState *s;
int i;
s = g_new0(StrongARMState, 1);
if (!rev) {
rev = "sa1110-b5";
}
if (strncmp(rev, "sa1110", 6)) {
if (strncmp(cpu_type, "sa1110", 6)) {
error_report("Machine requires a SA1110 processor.");
exit(1);
}
s->cpu = ARM_CPU(cpu_generic_init(TYPE_ARM_CPU, rev));
s->cpu = ARM_CPU(cpu_create(cpu_type));
memory_region_allocate_system_memory(&s->sdram, NULL, "strongarm.sdram",
sdram_size);