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nubus-device: add romfile property for loading declaration ROMs

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The declaration ROM is located at the top-most address of the standard slot
space.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210924073808.1041-12-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Mark Cave-Ayland 2021-09-24 08:37:59 +01:00 committed by Laurent Vivier
parent 2469dc1dda
commit 3616f424c9
2 changed files with 49 additions and 1 deletions
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44
hw/nubus/nubus-device.c
View File

@ -9,16 +9,21 @@
*/
#include "qemu/osdep.h"
#include "qemu/datadir.h"
#include "hw/loader.h"
#include "hw/nubus/nubus.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
static void nubus_device_realize(DeviceState *dev, Error **errp)
{
NubusBus *nubus = NUBUS_BUS(qdev_get_parent_bus(dev));
NubusDevice *nd = NUBUS_DEVICE(dev);
char *name;
char *name, *path;
hwaddr slot_offset;
int64_t size;
int ret;
/* Super */
slot_offset = nd->slot * NUBUS_SUPER_SLOT_SIZE;
@ -38,10 +43,47 @@ static void nubus_device_realize(DeviceState *dev, Error **errp)
memory_region_add_subregion(&nubus->slot_io, slot_offset,
&nd->slot_mem);
g_free(name);
/* Declaration ROM */
if (nd->romfile != NULL) {
path = qemu_find_file(QEMU_FILE_TYPE_BIOS, nd->romfile);
if (path == NULL) {
path = g_strdup(nd->romfile);
}
size = get_image_size(path);
if (size < 0) {
error_setg(errp, "failed to find romfile \"%s\"", nd->romfile);
g_free(path);
return;
} else if (size == 0) {
error_setg(errp, "romfile \"%s\" is empty", nd->romfile);
g_free(path);
return;
} else if (size > NUBUS_DECL_ROM_MAX_SIZE) {
error_setg(errp, "romfile \"%s\" too large (maximum size 128K)",
nd->romfile);
g_free(path);
return;
}
name = g_strdup_printf("nubus-slot-%x-declaration-rom", nd->slot);
memory_region_init_rom(&nd->decl_rom, OBJECT(dev), name, size,
&error_abort);
ret = load_image_mr(path, &nd->decl_rom);
g_free(path);
if (ret < 0) {
error_setg(errp, "could not load romfile \"%s\"", nd->romfile);
return;
}
memory_region_add_subregion(&nd->slot_mem, NUBUS_SLOT_SIZE - size,
&nd->decl_rom);
}
}
static Property nubus_device_properties[] = {
DEFINE_PROP_INT32("slot", NubusDevice, slot, -1),
DEFINE_PROP_STRING("romfile", NubusDevice, romfile),
DEFINE_PROP_END_OF_LIST()
};

6
include/hw/nubus/nubus.h
View File

@ -12,6 +12,7 @@
#include "hw/qdev-properties.h"
#include "exec/address-spaces.h"
#include "qom/object.h"
#include "qemu/units.h"
#define NUBUS_SUPER_SLOT_SIZE 0x10000000U
#define NUBUS_SUPER_SLOT_NB 0xe
@ -38,12 +39,17 @@ struct NubusBus {
uint16_t slot_available_mask;
};
#define NUBUS_DECL_ROM_MAX_SIZE (128 * KiB)
struct NubusDevice {
DeviceState qdev;
int32_t slot;
MemoryRegion super_slot_mem;
MemoryRegion slot_mem;
char *romfile;
MemoryRegion decl_rom;
};
#endif