On Wed, 10 Jan 2018 18:22:02 -0800
Michael Clark <m...@sifive.com> wrote:
> This provides a RISC-V Board compatible with the the SiFive E300 SDK.
> The following machine is implemented:
>
> - 'sifive_e300'; CLINT, PLIC, UART, AON, GPIO, QSPI, PWM
>
> Signed-off-by: Michael Clark <m...@sifive.com>
> ---
> hw/riscv/sifive_e300.c | 232
> +++++++++++++++++++++++++++++++++++++++++
> include/hw/riscv/sifive_e300.h | 79 ++++++++++++++
> 2 files changed, 311 insertions(+)
> create mode 100644 hw/riscv/sifive_e300.c
> create mode 100644 include/hw/riscv/sifive_e300.h
>
> diff --git a/hw/riscv/sifive_e300.c b/hw/riscv/sifive_e300.c
> new file mode 100644
> index 0000000..bbea55a
> --- /dev/null
> +++ b/hw/riscv/sifive_e300.c
> @@ -0,0 +1,232 @@
> +/*
> + * QEMU RISC-V Board Compatible with SiFive E300 SDK
> + *
> + * Copyright (c) 2017 SiFive, Inc.
> + *
> + * Provides a board compatible with the bsp in the SiFive E300 SDK:
> + *
> + * 0) UART
> + * 1) CLINT (Core Level Interruptor)
> + * 2) PLIC (Platform Level Interrupt Controller)
> + * 3) PRCI (Power, Reset, Clock, Interrupt)
> + * 4) Registers emulated as RAM: AON, GPIO, QSPI, PWM
> + * 5) Flash memory emulated as RAM
> + *
> + * The Mask ROM reset vector jumps to the flash payload at 0x2040_0000.
> + * The OTP ROM and Flash boot code will be emulated in a future version.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> copy
> + * of this software and associated documentation files (the "Software"), to
> deal
> + * in the Software without restriction, including without limitation the
> rights
> + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
> + * copies of the Software, and to permit persons to whom the Software is
> + * furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> FROM,
> + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
> + * THE SOFTWARE.
> + */
> +
> +#include "qemu/osdep.h"
> +#include "qemu/log.h"
> +#include "qemu/error-report.h"
> +#include "hw/hw.h"
> +#include "hw/boards.h"
> +#include "hw/loader.h"
> +#include "hw/sysbus.h"
> +#include "hw/char/serial.h"
> +#include "target/riscv/cpu.h"
> +#include "hw/riscv/riscv_hart.h"
> +#include "hw/riscv/sifive_plic.h"
> +#include "hw/riscv/sifive_clint.h"
> +#include "hw/riscv/sifive_prci.h"
> +#include "hw/riscv/sifive_uart.h"
> +#include "hw/riscv/sifive_e300.h"
> +#include "chardev/char.h"
> +#include "sysemu/arch_init.h"
> +#include "exec/address-spaces.h"
> +#include "elf.h"
> +
> +static const struct MemmapEntry {
> + hwaddr base;
> + hwaddr size;
> +} sifive_e300_memmap[] = {
> + [SIFIVE_E300_DEBUG] = { 0x0, 0x100 },
> + [SIFIVE_E300_MROM] = { 0x1000, 0x2000 },
> + [SIFIVE_E300_OTP] = { 0x20000, 0x2000 },
> + [SIFIVE_E300_CLINT] = { 0x2000000, 0x10000 },
> + [SIFIVE_E300_PLIC] = { 0xc000000, 0x4000000 },
> + [SIFIVE_E300_AON] = { 0x10000000, 0x8000 },
> + [SIFIVE_E300_PRCI] = { 0x10008000, 0x8000 },
> + [SIFIVE_E300_OTP_CTRL] = { 0x10010000, 0x1000 },
> + [SIFIVE_E300_GPIO0] = { 0x10012000, 0x1000 },
> + [SIFIVE_E300_UART0] = { 0x10013000, 0x1000 },
> + [SIFIVE_E300_QSPI0] = { 0x10014000, 0x1000 },
> + [SIFIVE_E300_PWM0] = { 0x10015000, 0x1000 },
> + [SIFIVE_E300_UART1] = { 0x10023000, 0x1000 },
> + [SIFIVE_E300_QSPI1] = { 0x10024000, 0x1000 },
> + [SIFIVE_E300_PWM1] = { 0x10025000, 0x1000 },
> + [SIFIVE_E300_QSPI2] = { 0x10034000, 0x1000 },
> + [SIFIVE_E300_PWM2] = { 0x10035000, 0x1000 },
> + [SIFIVE_E300_XIP] = { 0x20000000, 0x20000000 },
> + [SIFIVE_E300_DTIM] = { 0x80000000, 0x4000 }
> +};
> +
> +static uint64_t identity_translate(void *opaque, uint64_t addr)
> +{
> + return addr;
> +}
> +
> +static uint64_t load_kernel(const char *kernel_filename)
> +{
> + uint64_t kernel_entry, kernel_high;
> +
> + if (load_elf(kernel_filename, identity_translate, NULL,
> + &kernel_entry, NULL, &kernel_high,
> + /* little_endian = */ 0, ELF_MACHINE, 1, 0) < 0) {
"little_endian =" is misleading.
Actually it's "big_endian = 0".
The same comment is present in the U500 code.
--
Best regards,
Antony Pavlov
