haraldwolff/qemu-patch-raspberry4
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pc: convert pc_memory_init() to memory API

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Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Avi Kivity 2011-07-26 14:26:17 +03:00 committed by Anthony Liguori
parent 4aa63af149
commit 00cb2a99f5
2 changed files with 40 additions and 18 deletions
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57
hw/pc.c
View file

@ -41,6 +41,7 @@
#include "sysemu.h" #include "sysemu.h"
#include "blockdev.h" #include "blockdev.h"
#include "ui/qemu-spice.h" #include "ui/qemu-spice.h"
#include "memory.h"
/* output Bochs bios info messages */ /* output Bochs bios info messages */
//#define DEBUG_BIOS //#define DEBUG_BIOS
@ -966,22 +967,30 @@ void pc_memory_init(MemoryRegion *system_memory,
{ {
char *filename; char *filename;
int ret, linux_boot, i; int ret, linux_boot, i;
ram_addr_t ram_addr, bios_offset, option_rom_offset; MemoryRegion *ram, *bios, *isa_bios, *option_rom_mr;
MemoryRegion *ram_below_4g, *ram_above_4g;
int bios_size, isa_bios_size; int bios_size, isa_bios_size;
void *fw_cfg; void *fw_cfg;
linux_boot = (kernel_filename != NULL); linux_boot = (kernel_filename != NULL);
/* allocate RAM */ /* Allocate RAM. We allocate it as a single memory region and use
ram_addr = qemu_ram_alloc(NULL, "pc.ram", * aliases to address portions of it, mostly for backwards compatiblity
below_4g_mem_size + above_4g_mem_size); * with older qemus that used qemu_ram_alloc().
cpu_register_physical_memory(0, 0xa0000, ram_addr); */
cpu_register_physical_memory(0x100000, ram = qemu_malloc(sizeof(*ram));
below_4g_mem_size - 0x100000, memory_region_init_ram(ram, NULL, "pc.ram",
ram_addr + 0x100000); below_4g_mem_size + above_4g_mem_size);
ram_below_4g = qemu_malloc(sizeof(*ram_below_4g));
memory_region_init_alias(ram_below_4g, "ram-below-4g", ram,
0, below_4g_mem_size);
memory_region_add_subregion(system_memory, 0, ram_below_4g);
if (above_4g_mem_size > 0) { if (above_4g_mem_size > 0) {
cpu_register_physical_memory(0x100000000ULL, above_4g_mem_size, ram_above_4g = qemu_malloc(sizeof(*ram_above_4g));
ram_addr + below_4g_mem_size); memory_region_init_alias(ram_above_4g, "ram-above-4g", ram,
below_4g_mem_size, above_4g_mem_size);
memory_region_add_subregion(system_memory, 0x100000000ULL,
ram_above_4g);
} }
/* BIOS load */ /* BIOS load */
@ -997,7 +1006,9 @@ void pc_memory_init(MemoryRegion *system_memory,
(bios_size % 65536) != 0) { (bios_size % 65536) != 0) {
goto bios_error; goto bios_error;
} }
bios_offset = qemu_ram_alloc(NULL, "pc.bios", bios_size); bios = qemu_malloc(sizeof(*bios));
memory_region_init_ram(bios, NULL, "pc.bios", bios_size);
memory_region_set_readonly(bios, true);
ret = rom_add_file_fixed(bios_name, (uint32_t)(-bios_size), -1); ret = rom_add_file_fixed(bios_name, (uint32_t)(-bios_size), -1);
if (ret != 0) { if (ret != 0) {
bios_error: bios_error:
@ -1011,16 +1022,26 @@ void pc_memory_init(MemoryRegion *system_memory,
isa_bios_size = bios_size; isa_bios_size = bios_size;
if (isa_bios_size > (128 * 1024)) if (isa_bios_size > (128 * 1024))
isa_bios_size = 128 * 1024; isa_bios_size = 128 * 1024;
cpu_register_physical_memory(0x100000 - isa_bios_size, isa_bios = qemu_malloc(sizeof(*isa_bios));
isa_bios_size, memory_region_init_alias(isa_bios, "isa-bios", bios,
(bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM); bios_size - isa_bios_size, isa_bios_size);
memory_region_add_subregion_overlap(system_memory,
0x100000 - isa_bios_size,
isa_bios,
1);
memory_region_set_readonly(isa_bios, true);
option_rom_offset = qemu_ram_alloc(NULL, "pc.rom", PC_ROM_SIZE); option_rom_mr = qemu_malloc(sizeof(*option_rom_mr));
cpu_register_physical_memory(PC_ROM_MIN_VGA, PC_ROM_SIZE, option_rom_offset); memory_region_init_ram(option_rom_mr, NULL, "pc.rom", PC_ROM_SIZE);
memory_region_add_subregion_overlap(system_memory,
PC_ROM_MIN_VGA,
option_rom_mr,
1);
/* map all the bios at the top of memory */ /* map all the bios at the top of memory */
cpu_register_physical_memory((uint32_t)(-bios_size), memory_region_add_subregion(system_memory,
bios_size, bios_offset | IO_MEM_ROM); (uint32_t)(-bios_size),
bios);
fw_cfg = bochs_bios_init(); fw_cfg = bochs_bios_init();
rom_set_fw(fw_cfg); rom_set_fw(fw_cfg);

1
hw/pc.h
View file

@ -2,6 +2,7 @@
#define HW_PC_H #define HW_PC_H
#include "qemu-common.h" #include "qemu-common.h"
#include "memory.h"
#include "ioport.h" #include "ioport.h"
#include "isa.h" #include "isa.h"
#include "fdc.h" #include "fdc.h"