On 11/6/20 5:21 AM, Huacai Chen wrote:
> Preparing to add Loongson-3 machine support, add Loongson-3's LEFI (a
> UEFI-like interface for BIOS-Kernel boot parameters) helpers first.
>
> Reviewed-by: Philippe Mathieu-Daudé <f4...@amsat.org>
> Signed-off-by: Huacai Chen <che...@lemote.com>
> Co-developed-by: Jiaxun Yang <jiaxun.y...@flygoat.com>
> Signed-off-by: Jiaxun Yang <jiaxun.y...@flygoat.com>
> ---
> hw/mips/loongson3_bootp.c | 165 +++++++++++++++++++++++++++++++
> hw/mips/loongson3_bootp.h | 241
> ++++++++++++++++++++++++++++++++++++++++++++++
> hw/mips/meson.build | 1 +
> 3 files changed, 407 insertions(+)
> create mode 100644 hw/mips/loongson3_bootp.c
> create mode 100644 hw/mips/loongson3_bootp.h
>
> diff --git a/hw/mips/loongson3_bootp.c b/hw/mips/loongson3_bootp.c
> new file mode 100644
> index 0000000..3a16081
> --- /dev/null
> +++ b/hw/mips/loongson3_bootp.c
> @@ -0,0 +1,165 @@
> +/*
> + * LEFI (a UEFI-like interface for BIOS-Kernel boot parameters) helpers
> + *
> + * Copyright (c) 2018-2020 Huacai Chen (che...@lemote.com)
> + * Copyright (c) 2018-2020 Jiaxun Yang <jiaxun.y...@flygoat.com>
> + *
> + * This program is free software: you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation, either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program. If not, see <https://www.gnu.org/licenses/>.
> + */
> +
> +#include "qemu/osdep.h"
> +#include "qemu/units.h"
> +#include "qemu/cutils.h"
> +#include "cpu.h"
> +#include "hw/boards.h"
> +#include "hw/mips/loongson3_bootp.h"
> +
> +#define LOONGSON3_CORE_PER_NODE 4
> +
> +static struct efi_cpuinfo_loongson *init_cpu_info(void *g_cpuinfo, uint64_t
> cpu_freq)
> +{
> + struct efi_cpuinfo_loongson *c = g_cpuinfo;
> +
> + stl_le_p(&c->cputype, Loongson_3A);
> + stl_le_p(&c->processor_id, MIPS_CPU(first_cpu)->env.CP0_PRid);
Build failing with Clang:
FAILED: libqemu-mips64el-softmmu.fa.p/hw_mips_loongson3_bootp.c.o
hw/mips/loongson3_bootp.c:35:15: error: taking address of packed member
'processor_id' of class or structure 'efi_cpuinfo_loongson' may result
in an unaligned pointer value [-Werror,-Waddress-of-packed-member]
stl_le_p(&c->processor_id, MIPS_CPU(first_cpu)->env.CP0_PRid);
^~~~~~~~~~~~~~~
1 error generated.
> + if (cpu_freq > UINT_MAX) {
> + stl_le_p(&c->cpu_clock_freq, UINT_MAX);
> + } else {
> + stl_le_p(&c->cpu_clock_freq, cpu_freq);
> + }
> +
> + stw_le_p(&c->cpu_startup_core_id, 0);
> + stl_le_p(&c->nr_cpus, current_machine->smp.cpus);
> + stl_le_p(&c->total_node, DIV_ROUND_UP(current_machine->smp.cpus,
> + LOONGSON3_CORE_PER_NODE));
> +
> + return c;
> +}
> +
> +static struct efi_memory_map_loongson *init_memory_map(void *g_map, uint64_t
> ram_size)
> +{
> + struct efi_memory_map_loongson *emap = g_map;
> +
> + stl_le_p(&emap->nr_map, 2);
> + stl_le_p(&emap->mem_freq, 300000000);
> +
> + stl_le_p(&emap->map[0].node_id, 0);
> + stl_le_p(&emap->map[0].mem_type, 1);
> + stq_le_p(&emap->map[0].mem_start, 0x0);
> + stl_le_p(&emap->map[0].mem_size, 240);
> +
> + stl_le_p(&emap->map[1].node_id, 0);
> + stl_le_p(&emap->map[1].mem_type, 2);
> + stq_le_p(&emap->map[1].mem_start, 0x90000000);
> + stl_le_p(&emap->map[1].mem_size, (ram_size / MiB) - 256);
> +
> + return emap;
> +}
> +
> +static struct system_loongson *init_system_loongson(void *g_system)
> +{
> + struct system_loongson *s = g_system;
> +
> + stl_le_p(&s->ccnuma_smp, 0);
> + stl_le_p(&s->sing_double_channel, 1);
> + stl_le_p(&s->nr_uarts, 1);
> + stl_le_p(&s->uarts[0].iotype, 2);
> + stl_le_p(&s->uarts[0].int_offset, 2);
> + stl_le_p(&s->uarts[0].uartclk, 25000000); /* Random value */
> + stq_le_p(&s->uarts[0].uart_base, virt_memmap[VIRT_UART].base);
> +
> + return s;
> +}
> +
> +static struct irq_source_routing_table *init_irq_source(void *g_irq_source)
> +{
> + struct irq_source_routing_table *irq_info = g_irq_source;
> +
> + stl_le_p(&irq_info->node_id, 0);
> + stl_le_p(&irq_info->PIC_type, 0);
> + stw_le_p(&irq_info->dma_mask_bits, 64);
> + stq_le_p(&irq_info->pci_mem_start_addr,
> virt_memmap[VIRT_PCIE_MMIO].base);
> + stq_le_p(&irq_info->pci_mem_end_addr, virt_memmap[VIRT_PCIE_MMIO].base +
> + virt_memmap[VIRT_PCIE_MMIO].size -
> 1);
> + stq_le_p(&irq_info->pci_io_start_addr, virt_memmap[VIRT_PCIE_PIO].base);
> +
> + return irq_info;
> +}
> +
> +static struct interface_info *init_interface_info(void *g_interface)
> +{
> + struct interface_info *interface = g_interface;
> +
> + stw_le_p(&interface->vers, 0x01);
> + strpadcpy(interface->description, 64, "UEFI_Version_v1.0", '\0');
> +
> + return interface;
> +}
> +
> +static struct board_devices *board_devices_info(void *g_board)
> +{
> + struct board_devices *bd = g_board;
> +
> + strpadcpy(bd->name, 64, "Loongson-3A-VIRT-1w-V1.00-demo", '\0');
> +
> + return bd;
> +}
> +
> +static struct loongson_special_attribute *init_special_info(void *g_special)
> +{
> + struct loongson_special_attribute *special = g_special;
> +
> + strpadcpy(special->special_name, 64, "2018-04-01", '\0');
> +
> + return special;
> +}
> +
> +void init_loongson_params(struct loongson_params *lp, void *p,
> + uint64_t cpu_freq, uint64_t ram_size)
> +{
> + stq_le_p(&lp->cpu_offset,
> + (uintptr_t)init_cpu_info(p, cpu_freq) - (uintptr_t)lp);
> + p += ROUND_UP(sizeof(struct efi_cpuinfo_loongson), 64);
> +
> + stq_le_p(&lp->memory_offset,
> + (uintptr_t)init_memory_map(p, ram_size) - (uintptr_t)lp);
> + p += ROUND_UP(sizeof(struct efi_memory_map_loongson), 64);
> +
> + stq_le_p(&lp->system_offset,
> + (uintptr_t)init_system_loongson(p) - (uintptr_t)lp);
> + p += ROUND_UP(sizeof(struct system_loongson), 64);
> +
> + stq_le_p(&lp->irq_offset,
> + (uintptr_t)init_irq_source(p) - (uintptr_t)lp);
> + p += ROUND_UP(sizeof(struct irq_source_routing_table), 64);
> +
> + stq_le_p(&lp->interface_offset,
> + (uintptr_t)init_interface_info(p) - (uintptr_t)lp);
> + p += ROUND_UP(sizeof(struct interface_info), 64);
> +
> + stq_le_p(&lp->boarddev_table_offset,
> + (uintptr_t)board_devices_info(p) - (uintptr_t)lp);
> + p += ROUND_UP(sizeof(struct board_devices), 64);
> +
> + stq_le_p(&lp->special_offset,
> + (uintptr_t)init_special_info(p) - (uintptr_t)lp);
> + p += ROUND_UP(sizeof(struct loongson_special_attribute), 64);
> +}
> +
> +void init_reset_system(struct efi_reset_system_t *reset)
> +{
> + stq_le_p(&reset->Shutdown, 0xffffffffbfc000a8);
> + stq_le_p(&reset->ResetCold, 0xffffffffbfc00080);
> + stq_le_p(&reset->ResetWarm, 0xffffffffbfc00080);
> +}
> diff --git a/hw/mips/loongson3_bootp.h b/hw/mips/loongson3_bootp.h
> new file mode 100644
> index 0000000..bf4fd8c
> --- /dev/null
> +++ b/hw/mips/loongson3_bootp.h
> @@ -0,0 +1,241 @@
> +/*
> + * LEFI (a UEFI-like interface for BIOS-Kernel boot parameters) data
> structrues
> + * defined at arch/mips/include/asm/mach-loongson64/boot_param.h in Linux
> kernel
> + *
> + * Copyright (c) 2017-2020 Huacai Chen (che...@lemote.com)
> + * Copyright (c) 2017-2020 Jiaxun Yang <jiaxun.y...@flygoat.com>
> + *
> + * This program is free software: you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation, either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program. If not, see <https://www.gnu.org/licenses/>.
> + */
> +
> +#ifndef HW_MIPS_LOONGSON3_BOOTP_H
> +#define HW_MIPS_LOONGSON3_BOOTP_H
> +
> +struct efi_memory_map_loongson {
> + uint16_t vers; /* version of efi_memory_map */
> + uint32_t nr_map; /* number of memory_maps */
> + uint32_t mem_freq; /* memory frequence */
> + struct mem_map {
> + uint32_t node_id; /* node_id which memory attached to */
> + uint32_t mem_type; /* system memory, pci memory, pci io, etc.
> */
> + uint64_t mem_start; /* memory map start address */
> + uint32_t mem_size; /* each memory_map size, not the total size
> */
> + } map[128];
> +} QEMU_PACKED;
> +
> +enum loongson_cpu_type {
> + Legacy_2E = 0x0,
> + Legacy_2F = 0x1,
> + Legacy_3A = 0x2,
> + Legacy_3B = 0x3,
> + Legacy_1A = 0x4,
> + Legacy_1B = 0x5,
> + Legacy_2G = 0x6,
> + Legacy_2H = 0x7,
> + Loongson_1A = 0x100,
> + Loongson_1B = 0x101,
> + Loongson_2E = 0x200,
> + Loongson_2F = 0x201,
> + Loongson_2G = 0x202,
> + Loongson_2H = 0x203,
> + Loongson_3A = 0x300,
> + Loongson_3B = 0x301
> +};
> +
> +/*
> + * Capability and feature descriptor structure for MIPS CPU
> + */
> +struct efi_cpuinfo_loongson {
> + uint16_t vers; /* version of efi_cpuinfo_loongson */
> + uint32_t processor_id; /* PRID, e.g. 6305, 6306 */
> + uint32_t cputype; /* Loongson_3A/3B, etc. */
> + uint32_t total_node; /* num of total numa nodes */
> + uint16_t cpu_startup_core_id; /* Boot core id */
> + uint16_t reserved_cores_mask;
> + uint32_t cpu_clock_freq; /* cpu_clock */
> + uint32_t nr_cpus;
> + char cpuname[64];
> +} QEMU_PACKED;
> +
> +#define MAX_UARTS 64
> +struct uart_device {
> + uint32_t iotype;
> + uint32_t uartclk;
> + uint32_t int_offset;
> + uint64_t uart_base;
> +} QEMU_PACKED;
> +
> +#define MAX_SENSORS 64
> +#define SENSOR_TEMPER 0x00000001
> +#define SENSOR_VOLTAGE 0x00000002
> +#define SENSOR_FAN 0x00000004
> +struct sensor_device {
> + char name[32]; /* a formal name */
> + char label[64]; /* a flexible description */
> + uint32_t type; /* SENSOR_* */
> + uint32_t id; /* instance id of a sensor-class */
> + uint32_t fan_policy; /* step speed or constant speed */
> + uint32_t fan_percent;/* only for constant speed policy */
> + uint64_t base_addr; /* base address of device registers */
> +} QEMU_PACKED;
> +
> +struct system_loongson {
> + uint16_t vers; /* version of system_loongson */
> + uint32_t ccnuma_smp; /* 0: no numa; 1: has numa */
> + uint32_t sing_double_channel;/* 1: single; 2: double */
> + uint32_t nr_uarts;
> + struct uart_device uarts[MAX_UARTS];
> + uint32_t nr_sensors;
> + struct sensor_device sensors[MAX_SENSORS];
> + char has_ec;
> + char ec_name[32];
> + uint64_t ec_base_addr;
> + char has_tcm;
> + char tcm_name[32];
> + uint64_t tcm_base_addr;
> + uint64_t workarounds;
> + uint64_t of_dtb_addr; /* NULL if not support */
> +} QEMU_PACKED;
> +
> +struct irq_source_routing_table {
> + uint16_t vers;
> + uint16_t size;
> + uint16_t rtr_bus;
> + uint16_t rtr_devfn;
> + uint32_t vendor;
> + uint32_t device;
> + uint32_t PIC_type; /* conform use HT or PCI to route to
> CPU-PIC */
> + uint64_t ht_int_bit; /* 3A: 1<<24; 3B: 1<<16 */
> + uint64_t ht_enable; /* irqs used in this PIC */
> + uint32_t node_id; /* node id: 0x0-0; 0x1-1; 0x10-2; 0x11-3 */
> + uint64_t pci_mem_start_addr;
> + uint64_t pci_mem_end_addr;
> + uint64_t pci_io_start_addr;
> + uint64_t pci_io_end_addr;
> + uint64_t pci_config_addr;
> + uint16_t dma_mask_bits;
> + uint16_t dma_noncoherent;
> +} QEMU_PACKED;
> +
> +struct interface_info {
> + uint16_t vers; /* version of the specificition */
> + uint16_t size;
> + uint8_t flag;
> + char description[64];
> +} QEMU_PACKED;
> +
> +#define MAX_RESOURCE_NUMBER 128
> +struct resource_loongson {
> + uint64_t start; /* resource start address */
> + uint64_t end; /* resource end address */
> + char name[64];
> + uint32_t flags;
> +};
> +
> +struct archdev_data {}; /* arch specific additions */
> +
> +struct board_devices {
> + char name[64]; /* hold the device name */
> + uint32_t num_resources; /* number of device_resource */
> + /* for each device's resource */
> + struct resource_loongson resource[MAX_RESOURCE_NUMBER];
> + /* arch specific additions */
> + struct archdev_data archdata;
> +};
> +
> +struct loongson_special_attribute {
> + uint16_t vers; /* version of this special */
> + char special_name[64]; /* special_atribute_name */
> + uint32_t loongson_special_type; /* type of special device */
> + /* for each device's resource */
> + struct resource_loongson resource[MAX_RESOURCE_NUMBER];
> +};
> +
> +struct loongson_params {
> + uint64_t memory_offset; /* efi_memory_map_loongson struct offset */
> + uint64_t cpu_offset; /* efi_cpuinfo_loongson struct offset */
> + uint64_t system_offset; /* system_loongson struct offset */
> + uint64_t irq_offset; /* irq_source_routing_table struct offset */
> + uint64_t interface_offset; /* interface_info struct offset */
> + uint64_t special_offset; /* loongson_special_attribute struct offset
> */
> + uint64_t boarddev_table_offset; /* board_devices offset */
> +};
> +
> +struct smbios_tables {
> + uint16_t vers; /* version of smbios */
> + uint64_t vga_bios; /* vga_bios address */
> + struct loongson_params lp;
> +};
> +
> +struct efi_reset_system_t {
> + uint64_t ResetCold;
> + uint64_t ResetWarm;
> + uint64_t ResetType;
> + uint64_t Shutdown;
> + uint64_t DoSuspend; /* NULL if not support */
> +};
> +
> +struct efi_loongson {
> + uint64_t mps; /* MPS table */
> + uint64_t acpi; /* ACPI table (IA64 ext 0.71) */
> + uint64_t acpi20; /* ACPI table (ACPI 2.0) */
> + struct smbios_tables smbios; /* SM BIOS table */
> + uint64_t sal_systab; /* SAL system table */
> + uint64_t boot_info; /* boot info table */
> +};
> +
> +struct boot_params {
> + struct efi_loongson efi;
> + struct efi_reset_system_t reset_system;
> +};
> +
> +/* Overall MMIO & Memory layout */
> +enum {
> + VIRT_LOWMEM,
> + VIRT_PM,
> + VIRT_FW_CFG,
> + VIRT_RTC,
> + VIRT_PCIE_PIO,
> + VIRT_PCIE_ECAM,
> + VIRT_BIOS_ROM,
> + VIRT_UART,
> + VIRT_LIOINTC,
> + VIRT_PCIE_MMIO,
> + VIRT_HIGHMEM
> +};
> +
> +/* Low MEM layout for QEMU kernel loader */
> +enum {
> + LOADER_KERNEL,
> + LOADER_INITRD,
> + LOADER_CMDLINE
> +};
> +
> +/* BIOS ROM layout for QEMU kernel loader */
> +enum {
> + LOADER_BOOTROM,
> + LOADER_PARAM,
> +};
> +
> +struct MemmapEntry {
> + hwaddr base;
> + hwaddr size;
> +};
> +
> +extern const struct MemmapEntry virt_memmap[];
> +void init_loongson_params(struct loongson_params *lp, void *p,
> + uint64_t cpu_freq, uint64_t ram_size);
> +void init_reset_system(struct efi_reset_system_t *reset);
> +
> +#endif
> diff --git a/hw/mips/meson.build b/hw/mips/meson.build
> index 0e9f930..9e58c2b 100644
> --- a/hw/mips/meson.build
> +++ b/hw/mips/meson.build
> @@ -1,6 +1,7 @@
> mips_ss = ss.source_set()
> mips_ss.add(files('addr.c', 'mips_int.c', 'fw_cfg.c'))
> mips_ss.add(when: 'CONFIG_FULOONG', if_true: files('fuloong2e.c'))
> +mips_ss.add(when: 'CONFIG_LOONGSON3V', if_true: files('loongson3_bootp.c'))
> mips_ss.add(when: 'CONFIG_JAZZ', if_true: files('jazz.c'))
> mips_ss.add(when: 'CONFIG_MALTA', if_true: files('gt64xxx_pci.c', 'malta.c'))
> mips_ss.add(when: 'CONFIG_MIPSSIM', if_true: files('mipssim.c'))
>
