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platform: Remove qemu/virt directory

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The OpenSBI generic platform works perfectly fine on the QEMU virt
machine so let's remove dedicated QEMU virt machine platform from
OpenSBI.

All QEMU virt machine related documentation in OpenSBI will now
suggest using OpenSBI generic platform.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Anup Patel
2020-05-01 12:06:56 +05:30
committed by Anup Patel
parent 4f18c6e550
commit 13717a8e53
7 changed files with 28 additions and 215 deletions
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40
platform/qemu/virt/config.mk
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@@ -1,40 +0,0 @@
#
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2019 Western Digital Corporation or its affiliates.
#
# Authors:
# Anup Patel <anup.patel@wdc.com>
#
# Compiler flags
platform-cppflags-y =
platform-cflags-y =
platform-asflags-y =
platform-ldflags-y =
# Command for platform specific "make run"
platform-runcmd = qemu-system-riscv$(PLATFORM_RISCV_XLEN) -M virt -m 256M \
-nographic -kernel $(build_dir)/platform/qemu/virt/firmware/fw_payload.elf
# Blobs to build
FW_TEXT_START=0x80000000
FW_DYNAMIC=y
FW_JUMP=y
ifeq ($(PLATFORM_RISCV_XLEN), 32)
# This needs to be 4MB aligned for 32-bit system
FW_JUMP_ADDR=0x80400000
else
# This needs to be 2MB aligned for 64-bit system
FW_JUMP_ADDR=0x80200000
endif
FW_JUMP_FDT_ADDR=0x82200000
FW_PAYLOAD=y
ifeq ($(PLATFORM_RISCV_XLEN), 32)
# This needs to be 4MB aligned for 32-bit system
FW_PAYLOAD_OFFSET=0x400000
else
# This needs to be 2MB aligned for 64-bit system
FW_PAYLOAD_OFFSET=0x200000
endif
FW_PAYLOAD_FDT_ADDR=0x82200000

10
platform/qemu/virt/objects.mk
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@@ -1,10 +0,0 @@
#
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2019 Western Digital Corporation or its affiliates.
#
# Authors:
# Anup Patel <anup.patel@wdc.com>
#
platform-objs-y += platform.o

135
platform/qemu/virt/platform.c
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@@ -1,135 +0,0 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2019 Western Digital Corporation or its affiliates.
*
* Authors:
* Anup Patel <anup.patel@wdc.com>
* Nick Kossifidis <mick@ics.forth.gr>
*/
#include <sbi/riscv_asm.h>
#include <sbi/riscv_encoding.h>
#include <sbi/riscv_io.h>
#include <sbi/sbi_const.h>
#include <sbi/sbi_hart.h>
#include <sbi/sbi_platform.h>
#include <sbi_utils/fdt/fdt_fixup.h>
#include <sbi_utils/irqchip/plic.h>
#include <sbi_utils/serial/uart8250.h>
#include <sbi_utils/sys/clint.h>
#include <sbi_utils/sys/sifive_test.h>
/* clang-format off */
#define VIRT_HART_COUNT 8
#define VIRT_TEST_ADDR 0x100000
#define VIRT_CLINT_ADDR 0x2000000
#define VIRT_PLIC_ADDR 0xc000000
#define VIRT_PLIC_NUM_SOURCES 127
#define VIRT_PLIC_NUM_PRIORITIES 7
#define VIRT_UART16550_ADDR 0x10000000
#define VIRT_UART_BAUDRATE 115200
#define VIRT_UART_SHIFTREG_ADDR 1843200
/* clang-format on */
static int virt_early_init(bool cold_boot)
{
if (!cold_boot)
return 0;
return sifive_test_init(VIRT_TEST_ADDR);
}
static int virt_final_init(bool cold_boot)
{
void *fdt;
if (!cold_boot)
return 0;
fdt = sbi_scratch_thishart_arg1_ptr();
fdt_fixups(fdt);
return 0;
}
static int virt_console_init(void)
{
return uart8250_init(VIRT_UART16550_ADDR, VIRT_UART_SHIFTREG_ADDR,
VIRT_UART_BAUDRATE, 0, 1);
}
static int virt_irqchip_init(bool cold_boot)
{
int rc;
u32 hartid = current_hartid();
if (cold_boot) {
rc = plic_cold_irqchip_init(
VIRT_PLIC_ADDR, VIRT_PLIC_NUM_SOURCES, VIRT_HART_COUNT);
if (rc)
return rc;
}
return plic_warm_irqchip_init(hartid, (2 * hartid), (2 * hartid + 1));
}
static int virt_ipi_init(bool cold_boot)
{
int rc;
if (cold_boot) {
rc = clint_cold_ipi_init(VIRT_CLINT_ADDR, VIRT_HART_COUNT);
if (rc)
return rc;
}
return clint_warm_ipi_init();
}
static int virt_timer_init(bool cold_boot)
{
int rc;
if (cold_boot) {
rc = clint_cold_timer_init(VIRT_CLINT_ADDR,
VIRT_HART_COUNT, TRUE);
if (rc)
return rc;
}
return clint_warm_timer_init();
}
const struct sbi_platform_operations platform_ops = {
.early_init = virt_early_init,
.final_init = virt_final_init,
.console_putc = uart8250_putc,
.console_getc = uart8250_getc,
.console_init = virt_console_init,
.irqchip_init = virt_irqchip_init,
.ipi_send = clint_ipi_send,
.ipi_clear = clint_ipi_clear,
.ipi_init = virt_ipi_init,
.timer_value = clint_timer_value,
.timer_event_stop = clint_timer_event_stop,
.timer_event_start = clint_timer_event_start,
.timer_init = virt_timer_init,
.system_reset = sifive_test_system_reset,
};
const struct sbi_platform platform = {
.opensbi_version = OPENSBI_VERSION,
.platform_version = SBI_PLATFORM_VERSION(0x0, 0x01),
.name = "QEMU Virt Machine",
.features = SBI_PLATFORM_DEFAULT_FEATURES,
.hart_count = VIRT_HART_COUNT,
.hart_stack_size = SBI_PLATFORM_DEFAULT_HART_STACK_SIZE,
.platform_ops_addr = (unsigned long)&platform_ops
};