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authorIgor Mammedov2020-02-19 17:09:19 +0100
committerPatchew Importer2020-02-19 17:49:58 +0100
commitdc8953c6be147853f0e4598211e3d8827199283f (patch)
tree2926b692522445e7f30cb192662ed3eb8010a239 /hw/lm32
parentlm32/lm32_boards: use memdev for RAM (diff)
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lm32/milkymist: use memdev for RAM
memory_region_allocate_system_memory() API is going away, so replace it with memdev allocated MemoryRegion. The later is initialized by generic code, so board only needs to opt in to memdev scheme by providing MachineClass::default_ram_id and using MachineState::ram instead of manually initializing RAM memory region. PS: while at it add check for user supplied RAM size and error out if it mismatches board expected value. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200219160953.13771-46-imammedo@redhat.com>
Diffstat (limited to 'hw/lm32')
-rw-r--r--hw/lm32/milkymist.c21
1 files changed, 14 insertions, 7 deletions
diff --git a/hw/lm32/milkymist.c b/hw/lm32/milkymist.c
index 6d46134232..5c72266e58 100644
--- a/hw/lm32/milkymist.c
+++ b/hw/lm32/milkymist.c
@@ -36,6 +36,7 @@
#include "hw/display/milkymist_tmu2.h"
#include "lm32.h"
#include "exec/address-spaces.h"
+#include "qemu/cutils.h"
#define BIOS_FILENAME "mmone-bios.bin"
#define BIOS_OFFSET 0x00860000
@@ -82,6 +83,7 @@ static void main_cpu_reset(void *opaque)
static void
milkymist_init(MachineState *machine)
{
+ MachineClass *mc = MACHINE_GET_CLASS(machine);
const char *kernel_filename = machine->kernel_filename;
const char *kernel_cmdline = machine->kernel_cmdline;
const char *initrd_filename = machine->initrd_filename;
@@ -90,22 +92,27 @@ milkymist_init(MachineState *machine)
int kernel_size;
DriveInfo *dinfo;
MemoryRegion *address_space_mem = get_system_memory();
- MemoryRegion *phys_sdram = g_new(MemoryRegion, 1);
qemu_irq irq[32];
int i;
char *bios_filename;
ResetInfo *reset_info;
+ if (machine->ram_size != mc->default_ram_size) {
+ char *sz = size_to_str(mc->default_ram_size);
+ error_report("Invalid RAM size, should be %s", sz);
+ g_free(sz);
+ exit(EXIT_FAILURE);
+ }
+
/* memory map */
hwaddr flash_base = 0x00000000;
size_t flash_sector_size = 128 * KiB;
size_t flash_size = 32 * MiB;
hwaddr sdram_base = 0x40000000;
- size_t sdram_size = 128 * MiB;
hwaddr initrd_base = sdram_base + 0x1002000;
hwaddr cmdline_base = sdram_base + 0x1000000;
- size_t initrd_max = sdram_size - 0x1002000;
+ size_t initrd_max = machine->ram_size - 0x1002000;
reset_info = g_malloc0(sizeof(ResetInfo));
@@ -116,9 +123,7 @@ milkymist_init(MachineState *machine)
cpu_lm32_set_phys_msb_ignore(env, 1);
- memory_region_allocate_system_memory(phys_sdram, NULL, "milkymist.sdram",
- sdram_size);
- memory_region_add_subregion(address_space_mem, sdram_base, phys_sdram);
+ memory_region_add_subregion(address_space_mem, sdram_base, machine->ram);
dinfo = drive_get(IF_PFLASH, 0, 0);
/* Numonyx JS28F256J3F105 */
@@ -183,7 +188,7 @@ milkymist_init(MachineState *machine)
if (kernel_size < 0) {
kernel_size = load_image_targphys(kernel_filename, sdram_base,
- sdram_size);
+ machine->ram_size);
reset_info->bootstrap_pc = sdram_base;
}
@@ -216,6 +221,8 @@ static void milkymist_machine_init(MachineClass *mc)
mc->init = milkymist_init;
mc->is_default = 0;
mc->default_cpu_type = LM32_CPU_TYPE_NAME("lm32-full");
+ mc->default_ram_size = 128 * MiB;
+ mc->default_ram_id = "milkymist.sdram";
}
DEFINE_MACHINE("milkymist", milkymist_machine_init)