64eaa82095
drive_get_next() is basically a bad idea. It returns the "next" block backend of a certain interface type. "Next" means bus=0,unit=N, where subsequent calls count N up from zero, per interface type. This lets you define unit numbers implicitly by execution order. If the order changes, or new calls appear "in the middle", unit numbers change. ABI break. Hard to spot in review. A number of machines connect just one backend with drive_get_next(). Change them to use drive_get() directly. This makes the (zero) unit number explicit in the code. Cc: Beniamino Galvani <b.galvani@gmail.com> Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Subbaraya Sundeep <sundeep.lkml@gmail.com> Cc: Niek Linnenbank <nieklinnenbank@gmail.com> Cc: Andrew Baumann <Andrew.Baumann@microsoft.com> Cc: "Philippe Mathieu-Daudé" <f4bug@amsat.org> Cc: Jean-Christophe Dubois <jcd@tribudubois.net> Cc: Alistair Francis <Alistair.Francis@wdc.com> Cc: Bin Meng <bin.meng@windriver.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Artyom Tarasenko <atar4qemu@gmail.com> Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Cc: Michael Tokarev <mjt@tls.msk.ru> Cc: Laurent Vivier <laurent@vivier.eu> Cc: qemu-arm@nongnu.org Cc: qemu-riscv@nongnu.org Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20211117163409.3587705-3-armbru@redhat.com>
115 lines
3.6 KiB
C
115 lines
3.6 KiB
C
/*
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* cubieboard emulation
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*
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* Copyright (C) 2013 Li Guang
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* Written by Li Guang <lig.fnst@cn.fujitsu.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "hw/boards.h"
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#include "hw/qdev-properties.h"
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#include "hw/arm/allwinner-a10.h"
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static struct arm_boot_info cubieboard_binfo = {
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.loader_start = AW_A10_SDRAM_BASE,
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.board_id = 0x1008,
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};
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static void cubieboard_init(MachineState *machine)
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{
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AwA10State *a10;
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Error *err = NULL;
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DriveInfo *di;
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BlockBackend *blk;
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BusState *bus;
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DeviceState *carddev;
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/* BIOS is not supported by this board */
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if (machine->firmware) {
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error_report("BIOS not supported for this machine");
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exit(1);
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}
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/* This board has fixed size RAM (512MiB or 1GiB) */
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if (machine->ram_size != 512 * MiB &&
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machine->ram_size != 1 * GiB) {
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error_report("This machine can only be used with 512MiB or 1GiB RAM");
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exit(1);
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}
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/* Only allow Cortex-A8 for this board */
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if (strcmp(machine->cpu_type, ARM_CPU_TYPE_NAME("cortex-a8")) != 0) {
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error_report("This board can only be used with cortex-a8 CPU");
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exit(1);
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}
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a10 = AW_A10(object_new(TYPE_AW_A10));
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object_property_add_child(OBJECT(machine), "soc", OBJECT(a10));
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object_unref(OBJECT(a10));
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if (!object_property_set_int(OBJECT(&a10->emac), "phy-addr", 1, &err)) {
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error_reportf_err(err, "Couldn't set phy address: ");
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exit(1);
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}
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if (!object_property_set_int(OBJECT(&a10->timer), "clk0-freq", 32768,
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&err)) {
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error_reportf_err(err, "Couldn't set clk0 frequency: ");
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exit(1);
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}
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if (!object_property_set_int(OBJECT(&a10->timer), "clk1-freq", 24000000,
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&err)) {
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error_reportf_err(err, "Couldn't set clk1 frequency: ");
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exit(1);
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}
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if (!qdev_realize(DEVICE(a10), NULL, &err)) {
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error_reportf_err(err, "Couldn't realize Allwinner A10: ");
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exit(1);
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}
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/* Retrieve SD bus */
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di = drive_get(IF_SD, 0, 0);
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blk = di ? blk_by_legacy_dinfo(di) : NULL;
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bus = qdev_get_child_bus(DEVICE(a10), "sd-bus");
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/* Plug in SD card */
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carddev = qdev_new(TYPE_SD_CARD);
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qdev_prop_set_drive_err(carddev, "drive", blk, &error_fatal);
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qdev_realize_and_unref(carddev, bus, &error_fatal);
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memory_region_add_subregion(get_system_memory(), AW_A10_SDRAM_BASE,
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machine->ram);
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/* TODO create and connect IDE devices for ide_drive_get() */
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cubieboard_binfo.ram_size = machine->ram_size;
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arm_load_kernel(&a10->cpu, machine, &cubieboard_binfo);
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}
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static void cubieboard_machine_init(MachineClass *mc)
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{
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mc->desc = "cubietech cubieboard (Cortex-A8)";
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mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a8");
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mc->default_ram_size = 1 * GiB;
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mc->init = cubieboard_init;
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mc->block_default_type = IF_IDE;
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mc->units_per_default_bus = 1;
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mc->ignore_memory_transaction_failures = true;
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mc->default_ram_id = "cubieboard.ram";
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}
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DEFINE_MACHINE("cubieboard", cubieboard_machine_init)
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