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[PATCH v4 45/80] lm32/milkymist: use memdev for RAM
From: |
Igor Mammedov |
Subject: |
[PATCH v4 45/80] lm32/milkymist: use memdev for RAM |
Date: |
Fri, 31 Jan 2020 16:09:15 +0100 |
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 <address@hidden>
Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
---
v2:
* fix format string causing build failure on 32-bit host
(Philippe Mathieu-Daudé <address@hidden>)
v3:
* use size_to_str() to pretty print size in MiB
(Philippe Mathieu-Daudé <address@hidden>)
CC: address@hidden
---
hw/lm32/milkymist.c | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)
diff --git a/hw/lm32/milkymist.c b/hw/lm32/milkymist.c
index 6d46134..5c72266 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)
--
2.7.4
- [PATCH v4 35/80] arm/xilinx_zynq: use memdev for RAM, (continued)
- [PATCH v4 35/80] arm/xilinx_zynq: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 37/80] arm/xlnx-zcu102: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 33/80] arm/virt: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 39/80] null-machine: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 34/80] arm/xilinx_zynq: drop RAM size fixup, Igor Mammedov, 2020/01/31
- [PATCH v4 38/80] s390x/s390-virtio-ccw: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 40/80] cris/axis_dev88: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 41/80] hppa: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 42/80] x86/microvm: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 43/80] x86/pc: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 45/80] lm32/milkymist: use memdev for RAM,
Igor Mammedov <=
- [PATCH v4 49/80] m68k/next-cube: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 50/80] mips/boston: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 44/80] lm32/lm32_boards: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 46/80] m68k/an5206: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 47/80] m68k/q800: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 48/80] m68k/mcf5208: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 51/80] mips/mips_fulong2e: drop RAM size fixup, Igor Mammedov, 2020/01/31
- [PATCH v4 55/80] mips/mips_mipssim: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 52/80] mips/mips_fulong2e: use memdev for RAM, Igor Mammedov, 2020/01/31
- [PATCH v4 53/80] mips/mips_jazz: use memdev for RAM, Igor Mammedov, 2020/01/31