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4eba69b463
fdt_node_offset_by_compatible(fdt, -1, compat) only finds the first match. If the blob has more than one node with the same compatible string, extra nodes will remain active. Remove all the matching nodes, using the same loop as imx8mp-evk.c does for this purpose. Signed-off-by: Osama Abdelkader <osama.abdelkader@gmail.com> Message-id: 20260420162114.308519-1-osama.abdelkader@gmail.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
138 lines
4.2 KiB
C
138 lines
4.2 KiB
C
/*
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* Raspberry Pi 4B emulation
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*
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* Copyright (C) 2022 Ovchinnikov Vitalii <vitalii.ovchinnikov@auriga.com>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "qemu/osdep.h"
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#include "qemu/units.h"
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#include "qemu/cutils.h"
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#include "qapi/error.h"
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#include "qapi/visitor.h"
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#include "hw/arm/machines-qom.h"
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#include "hw/arm/raspi_platform.h"
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#include "hw/display/bcm2835_fb.h"
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#include "hw/core/registerfields.h"
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#include "qemu/error-report.h"
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#include "system/device_tree.h"
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#include "hw/core/boards.h"
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#include "hw/core/loader.h"
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#include "hw/arm/boot.h"
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#include "qom/object.h"
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#include "hw/arm/bcm2838.h"
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#include <libfdt.h>
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#define TYPE_RASPI4B_MACHINE MACHINE_TYPE_NAME("raspi4b")
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OBJECT_DECLARE_SIMPLE_TYPE(Raspi4bMachineState, RASPI4B_MACHINE)
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struct Raspi4bMachineState {
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RaspiBaseMachineState parent_obj;
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BCM2838State soc;
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};
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/*
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* Add second memory region if board RAM amount exceeds VC base address
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* (see https://datasheets.raspberrypi.com/bcm2711/bcm2711-peripherals.pdf
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* 1.2 Address Map)
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*/
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static void raspi_add_memory_node(void *fdt, hwaddr mem_base, hwaddr mem_len)
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{
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uint32_t acells, scells;
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char *nodename = g_strdup_printf("/memory@%" PRIx64, mem_base);
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acells = qemu_fdt_getprop_cell(fdt, "/", "#address-cells",
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NULL, &error_fatal);
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scells = qemu_fdt_getprop_cell(fdt, "/", "#size-cells",
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NULL, &error_fatal);
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/* validated by arm_load_dtb */
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g_assert(acells && scells);
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qemu_fdt_add_subnode(fdt, nodename);
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qemu_fdt_setprop_string(fdt, nodename, "device_type", "memory");
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qemu_fdt_setprop_sized_cells(fdt, nodename, "reg",
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acells, mem_base,
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scells, mem_len);
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g_free(nodename);
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}
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static void raspi4_modify_dtb(const struct arm_boot_info *info, void *fdt)
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{
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uint64_t ram_size;
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/* Temporarily disable following devices until they are implemented */
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const char *nodes_to_remove[] = {
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"brcm,bcm2711-pcie",
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"brcm,bcm2711-rng200",
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"brcm,bcm2711-thermal",
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"brcm,bcm2711-genet-v5",
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};
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for (int i = 0; i < ARRAY_SIZE(nodes_to_remove); i++) {
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const char *dev_str = nodes_to_remove[i];
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int offset;
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offset = fdt_node_offset_by_compatible(fdt, -1, dev_str);
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while (offset >= 0) {
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if (fdt_nop_node(fdt, offset) == 0) {
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warn_report("bcm2711 dtb: %s has been disabled!", dev_str);
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}
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offset = fdt_node_offset_by_compatible(fdt, offset, dev_str);
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}
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}
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ram_size = board_ram_size(info->board_id);
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if (info->ram_size > UPPER_RAM_BASE) {
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raspi_add_memory_node(fdt, UPPER_RAM_BASE, ram_size - UPPER_RAM_BASE);
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}
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}
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static void raspi4b_machine_init(MachineState *machine)
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{
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Raspi4bMachineState *s = RASPI4B_MACHINE(machine);
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RaspiBaseMachineState *s_base = RASPI_BASE_MACHINE(machine);
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RaspiBaseMachineClass *mc = RASPI_BASE_MACHINE_GET_CLASS(machine);
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BCM2838State *soc = &s->soc;
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s_base->binfo.modify_dtb = raspi4_modify_dtb;
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s_base->binfo.board_id = mc->board_rev;
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object_initialize_child(OBJECT(machine), "soc", soc,
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board_soc_type(mc->board_rev));
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raspi_base_machine_init(machine, &soc->parent_obj);
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}
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static void raspi4b_machine_class_init(ObjectClass *oc, const void *data)
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{
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MachineClass *mc = MACHINE_CLASS(oc);
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RaspiBaseMachineClass *rmc = RASPI_BASE_MACHINE_CLASS(oc);
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#if HOST_LONG_BITS == 32
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rmc->board_rev = 0xa03111; /* Revision 1.1, 1 Gb RAM */
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#else
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rmc->board_rev = 0xb03115; /* Revision 1.5, 2 Gb RAM */
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#endif
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raspi_machine_class_common_init(mc, rmc->board_rev);
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mc->auto_create_sdcard = true;
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mc->init = raspi4b_machine_init;
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}
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static const TypeInfo raspi4b_machine_type = {
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.name = TYPE_RASPI4B_MACHINE,
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.parent = TYPE_RASPI_BASE_MACHINE,
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.instance_size = sizeof(Raspi4bMachineState),
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.class_init = raspi4b_machine_class_init,
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.interfaces = aarch64_machine_interfaces,
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};
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static void raspi4b_machine_register_type(void)
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{
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type_register_static(&raspi4b_machine_type);
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}
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type_init(raspi4b_machine_register_type)
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