From dd6f3abbb81d4d0f8883a523e26fd45833a6b0d3 Mon Sep 17 00:00:00 2001 From: Tom Rini Date: Fri, 6 May 2016 10:40:22 -0400 Subject: x86: qemu: Move qfw command over to cmd and add Kconfig entry - Move the command portion of arch/x86/cpu/qemu/fw_cfg.c into cmd/qemu_fw_cfg.c - Move arch/x86/include/asm/fw_cfg.h to include/qemu_fw_cfg.h - Rename ACPI table portion to arch/x86/cpu/qemu/acpi_table.c Signed-off-by: Tom Rini Reviewed-by: Bin Meng --- cmd/Makefile | 1 + 1 file changed, 1 insertion(+) (limited to 'cmd/Makefile') diff --git a/cmd/Makefile b/cmd/Makefile index e3e0c74ffc6..d4432c84d9a 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -105,6 +105,7 @@ endif obj-y += pcmcia.o obj-$(CONFIG_CMD_PORTIO) += portio.o obj-$(CONFIG_CMD_PXE) += pxe.o +obj-$(CONFIG_CMD_QEMU_FW_CFG) += qemu_fw_cfg.o obj-$(CONFIG_CMD_READ) += read.o obj-$(CONFIG_CMD_REGINFO) += reginfo.o obj-$(CONFIG_CMD_REISER) += reiser.o -- cgit v1.3.1 From fcf5c04193b48c3f5e2d337a85d28c4026f90ac3 Mon Sep 17 00:00:00 2001 From: Miao Yan Date: Sun, 22 May 2016 19:37:14 -0700 Subject: x86: qemu: split qfw command interface and qfw core This patch splits qfw command interface and qfw core function into two files, and introduces a new Kconfig option (CONFIG_QFW) for qfw core. Now when qfw command interface is enabled, it will automatically select qfw core. This patch also makes the ACPI table generation select CONFIG_QFW. Signed-off-by: Miao Yan Reviewed-by: Bin Meng --- arch/x86/Kconfig | 2 +- arch/x86/cpu/mp_init.c | 4 +- arch/x86/cpu/qemu/Makefile | 3 +- arch/x86/cpu/qemu/qemu.c | 2 + cmd/Kconfig | 1 + cmd/Makefile | 2 +- cmd/qemu_fw_cfg.c | 353 --------------------------------------------- cmd/qfw.c | 181 +++++++++++++++++++++++ drivers/misc/Kconfig | 6 + drivers/misc/Makefile | 1 + drivers/misc/qemu_fw_cfg.c | 184 +++++++++++++++++++++++ 11 files changed, 381 insertions(+), 358 deletions(-) delete mode 100644 cmd/qemu_fw_cfg.c create mode 100644 cmd/qfw.c create mode 100644 drivers/misc/qemu_fw_cfg.c (limited to 'cmd/Makefile') diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 5a1e7a58e8f..9d0f5021614 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -439,7 +439,7 @@ config GENERATE_MP_TABLE config GENERATE_ACPI_TABLE bool "Generate an ACPI (Advanced Configuration and Power Interface) table" default n - select CMD_QEMU_FW_CFG if QEMU + select QFW if QEMU help The Advanced Configuration and Power Interface (ACPI) specification provides an open standard for device configuration and management diff --git a/arch/x86/cpu/mp_init.c b/arch/x86/cpu/mp_init.c index 13bec7ae1ed..c44a286e5bb 100644 --- a/arch/x86/cpu/mp_init.c +++ b/arch/x86/cpu/mp_init.c @@ -420,7 +420,7 @@ static int init_bsp(struct udevice **devp) return 0; } -#ifdef CONFIG_QEMU +#ifdef CONFIG_QFW static int qemu_cpu_fixup(void) { int ret; @@ -496,7 +496,7 @@ int mp_init(struct mp_params *p) if (ret) return ret; -#ifdef CONFIG_QEMU +#ifdef CONFIG_QFW ret = qemu_cpu_fixup(); if (ret) return ret; diff --git a/arch/x86/cpu/qemu/Makefile b/arch/x86/cpu/qemu/Makefile index 43ee4bde19b..7c08c3d79fa 100644 --- a/arch/x86/cpu/qemu/Makefile +++ b/arch/x86/cpu/qemu/Makefile @@ -7,5 +7,6 @@ ifndef CONFIG_EFI_STUB obj-y += car.o dram.o endif -obj-y += cpu.o qemu.o +obj-y += qemu.o +obj-$(CONFIG_QFW) += cpu.o obj-$(CONFIG_GENERATE_ACPI_TABLE) += acpi_table.o diff --git a/arch/x86/cpu/qemu/qemu.c b/arch/x86/cpu/qemu/qemu.c index b41e4ecbec2..32a43518744 100644 --- a/arch/x86/cpu/qemu/qemu.c +++ b/arch/x86/cpu/qemu/qemu.c @@ -88,7 +88,9 @@ static void qemu_chipset_init(void) enable_pm_ich9(); } +#ifdef CONFIG_QFW qemu_fwcfg_init(); +#endif } int arch_cpu_init(void) diff --git a/cmd/Kconfig b/cmd/Kconfig index c0fffe305c0..08b761f6db9 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -596,6 +596,7 @@ config CMD_SOUND config CMD_QEMU_FW_CFG bool "qfw" depends on X86 + select QFW help This provides access to the QEMU firmware interface. The main feature is to allow easy loading of files passed to qemu-system diff --git a/cmd/Makefile b/cmd/Makefile index d4432c84d9a..ff4fc5b98e8 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -105,7 +105,7 @@ endif obj-y += pcmcia.o obj-$(CONFIG_CMD_PORTIO) += portio.o obj-$(CONFIG_CMD_PXE) += pxe.o -obj-$(CONFIG_CMD_QEMU_FW_CFG) += qemu_fw_cfg.o +obj-$(CONFIG_CMD_QEMU_FW_CFG) += qfw.o obj-$(CONFIG_CMD_READ) += read.o obj-$(CONFIG_CMD_REGINFO) += reginfo.o obj-$(CONFIG_CMD_REISER) += reiser.o diff --git a/cmd/qemu_fw_cfg.c b/cmd/qemu_fw_cfg.c deleted file mode 100644 index aab6b1a4526..00000000000 --- a/cmd/qemu_fw_cfg.c +++ /dev/null @@ -1,353 +0,0 @@ -/* - * (C) Copyright 2015 Miao Yan - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include -#include -#include -#include -#include - -static bool fwcfg_present; -static bool fwcfg_dma_present; - -static LIST_HEAD(fw_list); - -/* Read configuration item using fw_cfg PIO interface */ -static void qemu_fwcfg_read_entry_pio(uint16_t entry, - uint32_t size, void *address) -{ - uint32_t i = 0; - uint8_t *data = address; - - /* - * writting FW_CFG_INVALID will cause read operation to resume at - * last offset, otherwise read will start at offset 0 - */ - if (entry != FW_CFG_INVALID) - outw(entry, FW_CONTROL_PORT); - while (size--) - data[i++] = inb(FW_DATA_PORT); -} - -/* Read configuration item using fw_cfg DMA interface */ -static void qemu_fwcfg_read_entry_dma(uint16_t entry, - uint32_t size, void *address) -{ - struct fw_cfg_dma_access dma; - - dma.length = cpu_to_be32(size); - dma.address = cpu_to_be64((uintptr_t)address); - dma.control = cpu_to_be32(FW_CFG_DMA_READ); - - /* - * writting FW_CFG_INVALID will cause read operation to resume at - * last offset, otherwise read will start at offset 0 - */ - if (entry != FW_CFG_INVALID) - dma.control |= cpu_to_be32(FW_CFG_DMA_SELECT | (entry << 16)); - - barrier(); - - debug("qemu_fwcfg_dma_read_entry: addr %p, length %u control 0x%x\n", - address, size, be32_to_cpu(dma.control)); - - outl(cpu_to_be32((uint32_t)&dma), FW_DMA_PORT_HIGH); - - while (be32_to_cpu(dma.control) & ~FW_CFG_DMA_ERROR) - __asm__ __volatile__ ("pause"); -} - -bool qemu_fwcfg_present(void) -{ - return fwcfg_present; -} - -bool qemu_fwcfg_dma_present(void) -{ - return fwcfg_dma_present; -} - -void qemu_fwcfg_read_entry(uint16_t entry, uint32_t length, void *address) -{ - if (fwcfg_dma_present) - qemu_fwcfg_read_entry_dma(entry, length, address); - else - qemu_fwcfg_read_entry_pio(entry, length, address); -} - -int qemu_fwcfg_online_cpus(void) -{ - uint16_t nb_cpus; - - if (!fwcfg_present) - return -ENODEV; - - qemu_fwcfg_read_entry(FW_CFG_NB_CPUS, 2, &nb_cpus); - - return le16_to_cpu(nb_cpus); -} - -/* - * This function prepares kernel for zboot. It loads kernel data - * to 'load_addr', initrd to 'initrd_addr' and kernel command - * line using qemu fw_cfg interface. - */ -static int qemu_fwcfg_setup_kernel(void *load_addr, void *initrd_addr) -{ - char *data_addr; - uint32_t setup_size, kernel_size, cmdline_size, initrd_size; - - qemu_fwcfg_read_entry(FW_CFG_SETUP_SIZE, 4, &setup_size); - qemu_fwcfg_read_entry(FW_CFG_KERNEL_SIZE, 4, &kernel_size); - - if (setup_size == 0 || kernel_size == 0) { - printf("warning: no kernel available\n"); - return -1; - } - - data_addr = load_addr; - qemu_fwcfg_read_entry(FW_CFG_SETUP_DATA, - le32_to_cpu(setup_size), data_addr); - data_addr += le32_to_cpu(setup_size); - - qemu_fwcfg_read_entry(FW_CFG_KERNEL_DATA, - le32_to_cpu(kernel_size), data_addr); - data_addr += le32_to_cpu(kernel_size); - - data_addr = initrd_addr; - qemu_fwcfg_read_entry(FW_CFG_INITRD_SIZE, 4, &initrd_size); - if (initrd_size == 0) { - printf("warning: no initrd available\n"); - } else { - qemu_fwcfg_read_entry(FW_CFG_INITRD_DATA, - le32_to_cpu(initrd_size), data_addr); - data_addr += le32_to_cpu(initrd_size); - } - - qemu_fwcfg_read_entry(FW_CFG_CMDLINE_SIZE, 4, &cmdline_size); - if (cmdline_size) { - qemu_fwcfg_read_entry(FW_CFG_CMDLINE_DATA, - le32_to_cpu(cmdline_size), data_addr); - /* - * if kernel cmdline only contains '\0', (e.g. no -append - * when invoking qemu), do not update bootargs - */ - if (*data_addr != '\0') { - if (setenv("bootargs", data_addr) < 0) - printf("warning: unable to change bootargs\n"); - } - } - - printf("loading kernel to address %p size %x", load_addr, - le32_to_cpu(kernel_size)); - if (initrd_size) - printf(" initrd %p size %x\n", - initrd_addr, - le32_to_cpu(initrd_size)); - else - printf("\n"); - - return 0; -} - -int qemu_fwcfg_read_firmware_list(void) -{ - int i; - uint32_t count; - struct fw_file *file; - struct list_head *entry; - - /* don't read it twice */ - if (!list_empty(&fw_list)) - return 0; - - qemu_fwcfg_read_entry(FW_CFG_FILE_DIR, 4, &count); - if (!count) - return 0; - - count = be32_to_cpu(count); - for (i = 0; i < count; i++) { - file = malloc(sizeof(*file)); - if (!file) { - printf("error: allocating resource\n"); - goto err; - } - qemu_fwcfg_read_entry(FW_CFG_INVALID, - sizeof(struct fw_cfg_file), &file->cfg); - file->addr = 0; - list_add_tail(&file->list, &fw_list); - } - - return 0; - -err: - list_for_each(entry, &fw_list) { - file = list_entry(entry, struct fw_file, list); - free(file); - } - - return -ENOMEM; -} - -struct fw_file *qemu_fwcfg_find_file(const char *name) -{ - struct list_head *entry; - struct fw_file *file; - - list_for_each(entry, &fw_list) { - file = list_entry(entry, struct fw_file, list); - if (!strcmp(file->cfg.name, name)) - return file; - } - - return NULL; -} - -struct fw_file *qemu_fwcfg_file_iter_init(struct fw_cfg_file_iter *iter) -{ - iter->entry = fw_list.next; - return list_entry(iter->entry, struct fw_file, list); -} - -struct fw_file *qemu_fwcfg_file_iter_next(struct fw_cfg_file_iter *iter) -{ - iter->entry = iter->entry->next; - return list_entry(iter->entry, struct fw_file, list); -} - -bool qemu_fwcfg_file_iter_end(struct fw_cfg_file_iter *iter) -{ - return iter->entry == &fw_list; -} - -static int qemu_fwcfg_list_firmware(void) -{ - int ret; - struct fw_cfg_file_iter iter; - struct fw_file *file; - - /* make sure fw_list is loaded */ - ret = qemu_fwcfg_read_firmware_list(); - if (ret) - return ret; - - - for (file = qemu_fwcfg_file_iter_init(&iter); - !qemu_fwcfg_file_iter_end(&iter); - file = qemu_fwcfg_file_iter_next(&iter)) { - printf("%-56s\n", file->cfg.name); - } - - return 0; -} - -void qemu_fwcfg_init(void) -{ - uint32_t qemu; - uint32_t dma_enabled; - - fwcfg_present = false; - fwcfg_dma_present = false; - - qemu_fwcfg_read_entry_pio(FW_CFG_SIGNATURE, 4, &qemu); - if (be32_to_cpu(qemu) == QEMU_FW_CFG_SIGNATURE) - fwcfg_present = true; - - if (fwcfg_present) { - qemu_fwcfg_read_entry_pio(FW_CFG_ID, 1, &dma_enabled); - if (dma_enabled & FW_CFG_DMA_ENABLED) - fwcfg_dma_present = true; - } -} - -static int qemu_fwcfg_do_list(cmd_tbl_t *cmdtp, int flag, - int argc, char * const argv[]) -{ - if (qemu_fwcfg_list_firmware() < 0) - return CMD_RET_FAILURE; - - return 0; -} - -static int qemu_fwcfg_do_cpus(cmd_tbl_t *cmdtp, int flag, - int argc, char * const argv[]) -{ - int ret = qemu_fwcfg_online_cpus(); - if (ret < 0) { - printf("QEMU fw_cfg interface not found\n"); - return CMD_RET_FAILURE; - } - - printf("%d cpu(s) online\n", qemu_fwcfg_online_cpus()); - - return 0; -} - -static int qemu_fwcfg_do_load(cmd_tbl_t *cmdtp, int flag, - int argc, char * const argv[]) -{ - char *env; - void *load_addr; - void *initrd_addr; - - env = getenv("loadaddr"); - load_addr = env ? - (void *)simple_strtoul(env, NULL, 16) : - (void *)CONFIG_LOADADDR; - - env = getenv("ramdiskaddr"); - initrd_addr = env ? - (void *)simple_strtoul(env, NULL, 16) : - (void *)CONFIG_RAMDISK_ADDR; - - if (argc == 2) { - load_addr = (void *)simple_strtoul(argv[0], NULL, 16); - initrd_addr = (void *)simple_strtoul(argv[1], NULL, 16); - } else if (argc == 1) { - load_addr = (void *)simple_strtoul(argv[0], NULL, 16); - } - - return qemu_fwcfg_setup_kernel(load_addr, initrd_addr); -} - -static cmd_tbl_t fwcfg_commands[] = { - U_BOOT_CMD_MKENT(list, 0, 1, qemu_fwcfg_do_list, "", ""), - U_BOOT_CMD_MKENT(cpus, 0, 1, qemu_fwcfg_do_cpus, "", ""), - U_BOOT_CMD_MKENT(load, 2, 1, qemu_fwcfg_do_load, "", ""), -}; - -static int do_qemu_fw(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - int ret; - cmd_tbl_t *fwcfg_cmd; - - if (!qemu_fwcfg_present()) { - printf("QEMU fw_cfg interface not found\n"); - return CMD_RET_USAGE; - } - - fwcfg_cmd = find_cmd_tbl(argv[1], fwcfg_commands, - ARRAY_SIZE(fwcfg_commands)); - argc -= 2; - argv += 2; - if (!fwcfg_cmd || argc > fwcfg_cmd->maxargs) - return CMD_RET_USAGE; - - ret = fwcfg_cmd->cmd(fwcfg_cmd, flag, argc, argv); - - return cmd_process_error(fwcfg_cmd, ret); -} - -U_BOOT_CMD( - qfw, 4, 1, do_qemu_fw, - "QEMU firmware interface", - "\n" - " - list : print firmware(s) currently loaded\n" - " - cpus : print online cpu number\n" - " - load : load kernel and initrd (if any), and setup for zboot\n" -) diff --git a/cmd/qfw.c b/cmd/qfw.c new file mode 100644 index 00000000000..37f1aa6fc7b --- /dev/null +++ b/cmd/qfw.c @@ -0,0 +1,181 @@ +/* + * (C) Copyright 2015 Miao Yan + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include + +/* + * This function prepares kernel for zboot. It loads kernel data + * to 'load_addr', initrd to 'initrd_addr' and kernel command + * line using qemu fw_cfg interface. + */ +static int qemu_fwcfg_setup_kernel(void *load_addr, void *initrd_addr) +{ + char *data_addr; + uint32_t setup_size, kernel_size, cmdline_size, initrd_size; + + qemu_fwcfg_read_entry(FW_CFG_SETUP_SIZE, 4, &setup_size); + qemu_fwcfg_read_entry(FW_CFG_KERNEL_SIZE, 4, &kernel_size); + + if (setup_size == 0 || kernel_size == 0) { + printf("warning: no kernel available\n"); + return -1; + } + + data_addr = load_addr; + qemu_fwcfg_read_entry(FW_CFG_SETUP_DATA, + le32_to_cpu(setup_size), data_addr); + data_addr += le32_to_cpu(setup_size); + + qemu_fwcfg_read_entry(FW_CFG_KERNEL_DATA, + le32_to_cpu(kernel_size), data_addr); + data_addr += le32_to_cpu(kernel_size); + + data_addr = initrd_addr; + qemu_fwcfg_read_entry(FW_CFG_INITRD_SIZE, 4, &initrd_size); + if (initrd_size == 0) { + printf("warning: no initrd available\n"); + } else { + qemu_fwcfg_read_entry(FW_CFG_INITRD_DATA, + le32_to_cpu(initrd_size), data_addr); + data_addr += le32_to_cpu(initrd_size); + } + + qemu_fwcfg_read_entry(FW_CFG_CMDLINE_SIZE, 4, &cmdline_size); + if (cmdline_size) { + qemu_fwcfg_read_entry(FW_CFG_CMDLINE_DATA, + le32_to_cpu(cmdline_size), data_addr); + /* + * if kernel cmdline only contains '\0', (e.g. no -append + * when invoking qemu), do not update bootargs + */ + if (*data_addr != '\0') { + if (setenv("bootargs", data_addr) < 0) + printf("warning: unable to change bootargs\n"); + } + } + + printf("loading kernel to address %p size %x", load_addr, + le32_to_cpu(kernel_size)); + if (initrd_size) + printf(" initrd %p size %x\n", + initrd_addr, + le32_to_cpu(initrd_size)); + else + printf("\n"); + + return 0; +} + +static int qemu_fwcfg_list_firmware(void) +{ + int ret; + struct fw_cfg_file_iter iter; + struct fw_file *file; + + /* make sure fw_list is loaded */ + ret = qemu_fwcfg_read_firmware_list(); + if (ret) + return ret; + + + for (file = qemu_fwcfg_file_iter_init(&iter); + !qemu_fwcfg_file_iter_end(&iter); + file = qemu_fwcfg_file_iter_next(&iter)) { + printf("%-56s\n", file->cfg.name); + } + + return 0; +} + +static int qemu_fwcfg_do_list(cmd_tbl_t *cmdtp, int flag, + int argc, char * const argv[]) +{ + if (qemu_fwcfg_list_firmware() < 0) + return CMD_RET_FAILURE; + + return 0; +} + +static int qemu_fwcfg_do_cpus(cmd_tbl_t *cmdtp, int flag, + int argc, char * const argv[]) +{ + int ret = qemu_fwcfg_online_cpus(); + if (ret < 0) { + printf("QEMU fw_cfg interface not found\n"); + return CMD_RET_FAILURE; + } + + printf("%d cpu(s) online\n", qemu_fwcfg_online_cpus()); + + return 0; +} + +static int qemu_fwcfg_do_load(cmd_tbl_t *cmdtp, int flag, + int argc, char * const argv[]) +{ + char *env; + void *load_addr; + void *initrd_addr; + + env = getenv("loadaddr"); + load_addr = env ? + (void *)simple_strtoul(env, NULL, 16) : + (void *)CONFIG_LOADADDR; + + env = getenv("ramdiskaddr"); + initrd_addr = env ? + (void *)simple_strtoul(env, NULL, 16) : + (void *)CONFIG_RAMDISK_ADDR; + + if (argc == 2) { + load_addr = (void *)simple_strtoul(argv[0], NULL, 16); + initrd_addr = (void *)simple_strtoul(argv[1], NULL, 16); + } else if (argc == 1) { + load_addr = (void *)simple_strtoul(argv[0], NULL, 16); + } + + return qemu_fwcfg_setup_kernel(load_addr, initrd_addr); +} + +static cmd_tbl_t fwcfg_commands[] = { + U_BOOT_CMD_MKENT(list, 0, 1, qemu_fwcfg_do_list, "", ""), + U_BOOT_CMD_MKENT(cpus, 0, 1, qemu_fwcfg_do_cpus, "", ""), + U_BOOT_CMD_MKENT(load, 2, 1, qemu_fwcfg_do_load, "", ""), +}; + +static int do_qemu_fw(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + int ret; + cmd_tbl_t *fwcfg_cmd; + + if (!qemu_fwcfg_present()) { + printf("QEMU fw_cfg interface not found\n"); + return CMD_RET_USAGE; + } + + fwcfg_cmd = find_cmd_tbl(argv[1], fwcfg_commands, + ARRAY_SIZE(fwcfg_commands)); + argc -= 2; + argv += 2; + if (!fwcfg_cmd || argc > fwcfg_cmd->maxargs) + return CMD_RET_USAGE; + + ret = fwcfg_cmd->cmd(fwcfg_cmd, flag, argc, argv); + + return cmd_process_error(fwcfg_cmd, ret); +} + +U_BOOT_CMD( + qfw, 4, 1, do_qemu_fw, + "QEMU firmware interface", + "\n" + " - list : print firmware(s) currently loaded\n" + " - cpus : print online cpu number\n" + " - load : load kernel and initrd (if any), and setup for zboot\n" +) diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index af8667f030c..fa537002d4b 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -138,4 +138,10 @@ config WINBOND_W83627 legacy UART or other devices in the Winbond Super IO chips on X86 platforms. +config QFW + bool + help + Hidden option to enable QEMU fw_cfg interface. This will be selected by + either CONFIG_CMD_QEMU_FW_CFG or CONFIG_GENERATE_ACPI_TABLE. + endmenu diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index 5969d344441..4893086b72c 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -43,3 +43,4 @@ obj-$(CONFIG_PCA9551_LED) += pca9551_led.o obj-$(CONFIG_RESET) += reset-uclass.o obj-$(CONFIG_FSL_DEVICE_DISABLE) += fsl_devdis.o obj-$(CONFIG_WINBOND_W83627) += winbond_w83627.o +obj-$(CONFIG_QFW) += qemu_fw_cfg.o diff --git a/drivers/misc/qemu_fw_cfg.c b/drivers/misc/qemu_fw_cfg.c new file mode 100644 index 00000000000..a574bd1ec18 --- /dev/null +++ b/drivers/misc/qemu_fw_cfg.c @@ -0,0 +1,184 @@ +/* + * (C) Copyright 2015 Miao Yan + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include + +static bool fwcfg_present; +static bool fwcfg_dma_present; + +static LIST_HEAD(fw_list); + +/* Read configuration item using fw_cfg PIO interface */ +static void qemu_fwcfg_read_entry_pio(uint16_t entry, + uint32_t size, void *address) +{ + uint32_t i = 0; + uint8_t *data = address; + + /* + * writting FW_CFG_INVALID will cause read operation to resume at + * last offset, otherwise read will start at offset 0 + */ + if (entry != FW_CFG_INVALID) + outw(entry, FW_CONTROL_PORT); + while (size--) + data[i++] = inb(FW_DATA_PORT); +} + +/* Read configuration item using fw_cfg DMA interface */ +static void qemu_fwcfg_read_entry_dma(uint16_t entry, + uint32_t size, void *address) +{ + struct fw_cfg_dma_access dma; + + dma.length = cpu_to_be32(size); + dma.address = cpu_to_be64((uintptr_t)address); + dma.control = cpu_to_be32(FW_CFG_DMA_READ); + + /* + * writting FW_CFG_INVALID will cause read operation to resume at + * last offset, otherwise read will start at offset 0 + */ + if (entry != FW_CFG_INVALID) + dma.control |= cpu_to_be32(FW_CFG_DMA_SELECT | (entry << 16)); + + barrier(); + + debug("qemu_fwcfg_dma_read_entry: addr %p, length %u control 0x%x\n", + address, size, be32_to_cpu(dma.control)); + + outl(cpu_to_be32((uint32_t)&dma), FW_DMA_PORT_HIGH); + + while (be32_to_cpu(dma.control) & ~FW_CFG_DMA_ERROR) + __asm__ __volatile__ ("pause"); +} + +bool qemu_fwcfg_present(void) +{ + return fwcfg_present; +} + +bool qemu_fwcfg_dma_present(void) +{ + return fwcfg_dma_present; +} + +void qemu_fwcfg_read_entry(uint16_t entry, uint32_t length, void *address) +{ + if (fwcfg_dma_present) + qemu_fwcfg_read_entry_dma(entry, length, address); + else + qemu_fwcfg_read_entry_pio(entry, length, address); +} + +int qemu_fwcfg_online_cpus(void) +{ + uint16_t nb_cpus; + + if (!fwcfg_present) + return -ENODEV; + + qemu_fwcfg_read_entry(FW_CFG_NB_CPUS, 2, &nb_cpus); + + return le16_to_cpu(nb_cpus); +} + +int qemu_fwcfg_read_firmware_list(void) +{ + int i; + uint32_t count; + struct fw_file *file; + struct list_head *entry; + + /* don't read it twice */ + if (!list_empty(&fw_list)) + return 0; + + qemu_fwcfg_read_entry(FW_CFG_FILE_DIR, 4, &count); + if (!count) + return 0; + + count = be32_to_cpu(count); + for (i = 0; i < count; i++) { + file = malloc(sizeof(*file)); + if (!file) { + printf("error: allocating resource\n"); + goto err; + } + qemu_fwcfg_read_entry(FW_CFG_INVALID, + sizeof(struct fw_cfg_file), &file->cfg); + file->addr = 0; + list_add_tail(&file->list, &fw_list); + } + + return 0; + +err: + list_for_each(entry, &fw_list) { + file = list_entry(entry, struct fw_file, list); + free(file); + } + + return -ENOMEM; +} + +struct fw_file *qemu_fwcfg_find_file(const char *name) +{ + struct list_head *entry; + struct fw_file *file; + + list_for_each(entry, &fw_list) { + file = list_entry(entry, struct fw_file, list); + if (!strcmp(file->cfg.name, name)) + return file; + } + + return NULL; +} + +struct fw_file *qemu_fwcfg_file_iter_init(struct fw_cfg_file_iter *iter) +{ + iter->entry = fw_list.next; + return list_entry((struct list_head *)iter->entry, + struct fw_file, list); +} + +struct fw_file *qemu_fwcfg_file_iter_next(struct fw_cfg_file_iter *iter) +{ + iter->entry = ((struct list_head *)iter->entry)->next; + return list_entry((struct list_head *)iter->entry, + struct fw_file, list); +} + +bool qemu_fwcfg_file_iter_end(struct fw_cfg_file_iter *iter) +{ + return iter->entry == &fw_list; +} + +void qemu_fwcfg_init(void) +{ + uint32_t qemu; + uint32_t dma_enabled; + + fwcfg_present = false; + fwcfg_dma_present = false; + + qemu_fwcfg_read_entry_pio(FW_CFG_SIGNATURE, 4, &qemu); + if (be32_to_cpu(qemu) == QEMU_FW_CFG_SIGNATURE) + fwcfg_present = true; + + if (fwcfg_present) { + qemu_fwcfg_read_entry_pio(FW_CFG_ID, 1, &dma_enabled); + if (dma_enabled & FW_CFG_DMA_ENABLED) + fwcfg_dma_present = true; + } +} -- cgit v1.3.1 From 1868659002a6b7ab3b1da7be74f53d3e10e915be Mon Sep 17 00:00:00 2001 From: Miao Yan Date: Sun, 22 May 2016 19:37:17 -0700 Subject: cmd: qfw: rename qemu_fw_cfg.[c|h] to qfw.[c|h] Make file names consistent with CONFIG_QFW and CONFIG_CMD_QFW Signed-off-by: Miao Yan Reviewed-by: Bin Meng --- arch/x86/cpu/mp_init.c | 2 +- arch/x86/cpu/qemu/acpi_table.c | 2 +- arch/x86/cpu/qemu/cpu.c | 2 +- arch/x86/cpu/qemu/qemu.c | 2 +- cmd/Kconfig | 2 +- cmd/Makefile | 2 +- cmd/qfw.c | 2 +- configs/qemu-x86_defconfig | 2 +- drivers/misc/Kconfig | 2 +- drivers/misc/Makefile | 2 +- drivers/misc/qemu_fw_cfg.c | 180 ----------------------------------------- drivers/misc/qfw.c | 180 +++++++++++++++++++++++++++++++++++++++++ include/qemu_fw_cfg.h | 176 ---------------------------------------- include/qfw.h | 176 ++++++++++++++++++++++++++++++++++++++++ 14 files changed, 366 insertions(+), 366 deletions(-) delete mode 100644 drivers/misc/qemu_fw_cfg.c create mode 100644 drivers/misc/qfw.c delete mode 100644 include/qemu_fw_cfg.h create mode 100644 include/qfw.h (limited to 'cmd/Makefile') diff --git a/arch/x86/cpu/mp_init.c b/arch/x86/cpu/mp_init.c index c44a286e5bb..8207274879c 100644 --- a/arch/x86/cpu/mp_init.c +++ b/arch/x86/cpu/mp_init.c @@ -11,7 +11,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/arch/x86/cpu/qemu/acpi_table.c b/arch/x86/cpu/qemu/acpi_table.c index b17fa03bc89..5bb1756c530 100644 --- a/arch/x86/cpu/qemu/acpi_table.c +++ b/arch/x86/cpu/qemu/acpi_table.c @@ -8,7 +8,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/arch/x86/cpu/qemu/cpu.c b/arch/x86/cpu/qemu/cpu.c index 4d2989a7084..b1a965e7156 100644 --- a/arch/x86/cpu/qemu/cpu.c +++ b/arch/x86/cpu/qemu/cpu.c @@ -8,7 +8,7 @@ #include #include #include -#include +#include #include DECLARE_GLOBAL_DATA_PTR; diff --git a/arch/x86/cpu/qemu/qemu.c b/arch/x86/cpu/qemu/qemu.c index c29add39b26..680e558ee8b 100644 --- a/arch/x86/cpu/qemu/qemu.c +++ b/arch/x86/cpu/qemu/qemu.c @@ -6,7 +6,7 @@ #include #include -#include +#include #include #include #include diff --git a/cmd/Kconfig b/cmd/Kconfig index 08b761f6db9..c5a7a590644 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -593,7 +593,7 @@ config CMD_SOUND sound init - set up sound system sound play - play a sound -config CMD_QEMU_FW_CFG +config CMD_QFW bool "qfw" depends on X86 select QFW diff --git a/cmd/Makefile b/cmd/Makefile index ff4fc5b98e8..9ce7861f822 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -105,7 +105,7 @@ endif obj-y += pcmcia.o obj-$(CONFIG_CMD_PORTIO) += portio.o obj-$(CONFIG_CMD_PXE) += pxe.o -obj-$(CONFIG_CMD_QEMU_FW_CFG) += qfw.o +obj-$(CONFIG_CMD_QFW) += qfw.o obj-$(CONFIG_CMD_READ) += read.o obj-$(CONFIG_CMD_REGINFO) += reginfo.o obj-$(CONFIG_CMD_REISER) += reiser.o diff --git a/cmd/qfw.c b/cmd/qfw.c index 37f1aa6fc7b..c6730bf2d3e 100644 --- a/cmd/qfw.c +++ b/cmd/qfw.c @@ -7,7 +7,7 @@ #include #include #include -#include +#include /* * This function prepares kernel for zboot. It loads kernel data diff --git a/configs/qemu-x86_defconfig b/configs/qemu-x86_defconfig index a813e5b4389..45bb3ec0e9e 100644 --- a/configs/qemu-x86_defconfig +++ b/configs/qemu-x86_defconfig @@ -20,7 +20,7 @@ CONFIG_CMD_DHCP=y # CONFIG_CMD_NFS is not set CONFIG_CMD_PING=y CONFIG_CMD_TIME=y -CONFIG_CMD_QEMU_FW_CFG=y +CONFIG_CMD_QFW=y CONFIG_CMD_BOOTSTAGE=y CONFIG_CMD_EXT2=y CONFIG_CMD_EXT4=y diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index fa537002d4b..c40f6b577f3 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -142,6 +142,6 @@ config QFW bool help Hidden option to enable QEMU fw_cfg interface. This will be selected by - either CONFIG_CMD_QEMU_FW_CFG or CONFIG_GENERATE_ACPI_TABLE. + either CONFIG_CMD_QFW or CONFIG_GENERATE_ACPI_TABLE. endmenu diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index 4893086b72c..98704f2085d 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -43,4 +43,4 @@ obj-$(CONFIG_PCA9551_LED) += pca9551_led.o obj-$(CONFIG_RESET) += reset-uclass.o obj-$(CONFIG_FSL_DEVICE_DISABLE) += fsl_devdis.o obj-$(CONFIG_WINBOND_W83627) += winbond_w83627.o -obj-$(CONFIG_QFW) += qemu_fw_cfg.o +obj-$(CONFIG_QFW) += qfw.o diff --git a/drivers/misc/qemu_fw_cfg.c b/drivers/misc/qemu_fw_cfg.c deleted file mode 100644 index 0f72549321c..00000000000 --- a/drivers/misc/qemu_fw_cfg.c +++ /dev/null @@ -1,180 +0,0 @@ -/* - * (C) Copyright 2015 Miao Yan - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include -#include -#include -#include -#include - -static bool fwcfg_present; -static bool fwcfg_dma_present; -static struct fw_cfg_arch_ops *fwcfg_arch_ops; - -static LIST_HEAD(fw_list); - -/* Read configuration item using fw_cfg PIO interface */ -static void qemu_fwcfg_read_entry_pio(uint16_t entry, - uint32_t size, void *address) -{ - debug("qemu_fwcfg_read_entry_pio: entry 0x%x, size %u address %p\n", - entry, size, address); - - return fwcfg_arch_ops->arch_read_pio(entry, size, address); -} - -/* Read configuration item using fw_cfg DMA interface */ -static void qemu_fwcfg_read_entry_dma(uint16_t entry, - uint32_t size, void *address) -{ - struct fw_cfg_dma_access dma; - - dma.length = cpu_to_be32(size); - dma.address = cpu_to_be64((uintptr_t)address); - dma.control = cpu_to_be32(FW_CFG_DMA_READ); - - /* - * writting FW_CFG_INVALID will cause read operation to resume at - * last offset, otherwise read will start at offset 0 - */ - if (entry != FW_CFG_INVALID) - dma.control |= cpu_to_be32(FW_CFG_DMA_SELECT | (entry << 16)); - - barrier(); - - debug("qemu_fwcfg_read_entry_dma: entry 0x%x, size %u address %p, control 0x%x\n", - entry, size, address, be32_to_cpu(dma.control)); - - fwcfg_arch_ops->arch_read_dma(&dma); -} - -bool qemu_fwcfg_present(void) -{ - return fwcfg_present; -} - -bool qemu_fwcfg_dma_present(void) -{ - return fwcfg_dma_present; -} - -void qemu_fwcfg_read_entry(uint16_t entry, uint32_t length, void *address) -{ - if (fwcfg_dma_present) - qemu_fwcfg_read_entry_dma(entry, length, address); - else - qemu_fwcfg_read_entry_pio(entry, length, address); -} - -int qemu_fwcfg_online_cpus(void) -{ - uint16_t nb_cpus; - - if (!fwcfg_present) - return -ENODEV; - - qemu_fwcfg_read_entry(FW_CFG_NB_CPUS, 2, &nb_cpus); - - return le16_to_cpu(nb_cpus); -} - -int qemu_fwcfg_read_firmware_list(void) -{ - int i; - uint32_t count; - struct fw_file *file; - struct list_head *entry; - - /* don't read it twice */ - if (!list_empty(&fw_list)) - return 0; - - qemu_fwcfg_read_entry(FW_CFG_FILE_DIR, 4, &count); - if (!count) - return 0; - - count = be32_to_cpu(count); - for (i = 0; i < count; i++) { - file = malloc(sizeof(*file)); - if (!file) { - printf("error: allocating resource\n"); - goto err; - } - qemu_fwcfg_read_entry(FW_CFG_INVALID, - sizeof(struct fw_cfg_file), &file->cfg); - file->addr = 0; - list_add_tail(&file->list, &fw_list); - } - - return 0; - -err: - list_for_each(entry, &fw_list) { - file = list_entry(entry, struct fw_file, list); - free(file); - } - - return -ENOMEM; -} - -struct fw_file *qemu_fwcfg_find_file(const char *name) -{ - struct list_head *entry; - struct fw_file *file; - - list_for_each(entry, &fw_list) { - file = list_entry(entry, struct fw_file, list); - if (!strcmp(file->cfg.name, name)) - return file; - } - - return NULL; -} - -struct fw_file *qemu_fwcfg_file_iter_init(struct fw_cfg_file_iter *iter) -{ - iter->entry = fw_list.next; - return list_entry((struct list_head *)iter->entry, - struct fw_file, list); -} - -struct fw_file *qemu_fwcfg_file_iter_next(struct fw_cfg_file_iter *iter) -{ - iter->entry = ((struct list_head *)iter->entry)->next; - return list_entry((struct list_head *)iter->entry, - struct fw_file, list); -} - -bool qemu_fwcfg_file_iter_end(struct fw_cfg_file_iter *iter) -{ - return iter->entry == &fw_list; -} - -void qemu_fwcfg_init(struct fw_cfg_arch_ops *ops) -{ - uint32_t qemu; - uint32_t dma_enabled; - - fwcfg_present = false; - fwcfg_dma_present = false; - fwcfg_arch_ops = NULL; - - if (!ops || !ops->arch_read_pio || !ops->arch_read_dma) - return; - fwcfg_arch_ops = ops; - - qemu_fwcfg_read_entry_pio(FW_CFG_SIGNATURE, 4, &qemu); - if (be32_to_cpu(qemu) == QEMU_FW_CFG_SIGNATURE) - fwcfg_present = true; - - if (fwcfg_present) { - qemu_fwcfg_read_entry_pio(FW_CFG_ID, 1, &dma_enabled); - if (dma_enabled & FW_CFG_DMA_ENABLED) - fwcfg_dma_present = true; - } -} diff --git a/drivers/misc/qfw.c b/drivers/misc/qfw.c new file mode 100644 index 00000000000..59d9376d768 --- /dev/null +++ b/drivers/misc/qfw.c @@ -0,0 +1,180 @@ +/* + * (C) Copyright 2015 Miao Yan + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include + +static bool fwcfg_present; +static bool fwcfg_dma_present; +static struct fw_cfg_arch_ops *fwcfg_arch_ops; + +static LIST_HEAD(fw_list); + +/* Read configuration item using fw_cfg PIO interface */ +static void qemu_fwcfg_read_entry_pio(uint16_t entry, + uint32_t size, void *address) +{ + debug("qemu_fwcfg_read_entry_pio: entry 0x%x, size %u address %p\n", + entry, size, address); + + return fwcfg_arch_ops->arch_read_pio(entry, size, address); +} + +/* Read configuration item using fw_cfg DMA interface */ +static void qemu_fwcfg_read_entry_dma(uint16_t entry, + uint32_t size, void *address) +{ + struct fw_cfg_dma_access dma; + + dma.length = cpu_to_be32(size); + dma.address = cpu_to_be64((uintptr_t)address); + dma.control = cpu_to_be32(FW_CFG_DMA_READ); + + /* + * writting FW_CFG_INVALID will cause read operation to resume at + * last offset, otherwise read will start at offset 0 + */ + if (entry != FW_CFG_INVALID) + dma.control |= cpu_to_be32(FW_CFG_DMA_SELECT | (entry << 16)); + + barrier(); + + debug("qemu_fwcfg_read_entry_dma: entry 0x%x, size %u address %p, control 0x%x\n", + entry, size, address, be32_to_cpu(dma.control)); + + fwcfg_arch_ops->arch_read_dma(&dma); +} + +bool qemu_fwcfg_present(void) +{ + return fwcfg_present; +} + +bool qemu_fwcfg_dma_present(void) +{ + return fwcfg_dma_present; +} + +void qemu_fwcfg_read_entry(uint16_t entry, uint32_t length, void *address) +{ + if (fwcfg_dma_present) + qemu_fwcfg_read_entry_dma(entry, length, address); + else + qemu_fwcfg_read_entry_pio(entry, length, address); +} + +int qemu_fwcfg_online_cpus(void) +{ + uint16_t nb_cpus; + + if (!fwcfg_present) + return -ENODEV; + + qemu_fwcfg_read_entry(FW_CFG_NB_CPUS, 2, &nb_cpus); + + return le16_to_cpu(nb_cpus); +} + +int qemu_fwcfg_read_firmware_list(void) +{ + int i; + uint32_t count; + struct fw_file *file; + struct list_head *entry; + + /* don't read it twice */ + if (!list_empty(&fw_list)) + return 0; + + qemu_fwcfg_read_entry(FW_CFG_FILE_DIR, 4, &count); + if (!count) + return 0; + + count = be32_to_cpu(count); + for (i = 0; i < count; i++) { + file = malloc(sizeof(*file)); + if (!file) { + printf("error: allocating resource\n"); + goto err; + } + qemu_fwcfg_read_entry(FW_CFG_INVALID, + sizeof(struct fw_cfg_file), &file->cfg); + file->addr = 0; + list_add_tail(&file->list, &fw_list); + } + + return 0; + +err: + list_for_each(entry, &fw_list) { + file = list_entry(entry, struct fw_file, list); + free(file); + } + + return -ENOMEM; +} + +struct fw_file *qemu_fwcfg_find_file(const char *name) +{ + struct list_head *entry; + struct fw_file *file; + + list_for_each(entry, &fw_list) { + file = list_entry(entry, struct fw_file, list); + if (!strcmp(file->cfg.name, name)) + return file; + } + + return NULL; +} + +struct fw_file *qemu_fwcfg_file_iter_init(struct fw_cfg_file_iter *iter) +{ + iter->entry = fw_list.next; + return list_entry((struct list_head *)iter->entry, + struct fw_file, list); +} + +struct fw_file *qemu_fwcfg_file_iter_next(struct fw_cfg_file_iter *iter) +{ + iter->entry = ((struct list_head *)iter->entry)->next; + return list_entry((struct list_head *)iter->entry, + struct fw_file, list); +} + +bool qemu_fwcfg_file_iter_end(struct fw_cfg_file_iter *iter) +{ + return iter->entry == &fw_list; +} + +void qemu_fwcfg_init(struct fw_cfg_arch_ops *ops) +{ + uint32_t qemu; + uint32_t dma_enabled; + + fwcfg_present = false; + fwcfg_dma_present = false; + fwcfg_arch_ops = NULL; + + if (!ops || !ops->arch_read_pio || !ops->arch_read_dma) + return; + fwcfg_arch_ops = ops; + + qemu_fwcfg_read_entry_pio(FW_CFG_SIGNATURE, 4, &qemu); + if (be32_to_cpu(qemu) == QEMU_FW_CFG_SIGNATURE) + fwcfg_present = true; + + if (fwcfg_present) { + qemu_fwcfg_read_entry_pio(FW_CFG_ID, 1, &dma_enabled); + if (dma_enabled & FW_CFG_DMA_ENABLED) + fwcfg_dma_present = true; + } +} diff --git a/include/qemu_fw_cfg.h b/include/qemu_fw_cfg.h deleted file mode 100644 index b0b3b5945ef..00000000000 --- a/include/qemu_fw_cfg.h +++ /dev/null @@ -1,176 +0,0 @@ -/* - * (C) Copyright 2015 Miao Yan - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#ifndef __FW_CFG__ -#define __FW_CFG__ - -#include - -enum qemu_fwcfg_items { - FW_CFG_SIGNATURE = 0x00, - FW_CFG_ID = 0x01, - FW_CFG_UUID = 0x02, - FW_CFG_RAM_SIZE = 0x03, - FW_CFG_NOGRAPHIC = 0x04, - FW_CFG_NB_CPUS = 0x05, - FW_CFG_MACHINE_ID = 0x06, - FW_CFG_KERNEL_ADDR = 0x07, - FW_CFG_KERNEL_SIZE = 0x08, - FW_CFG_KERNEL_CMDLINE = 0x09, - FW_CFG_INITRD_ADDR = 0x0a, - FW_CFG_INITRD_SIZE = 0x0b, - FW_CFG_BOOT_DEVICE = 0x0c, - FW_CFG_NUMA = 0x0d, - FW_CFG_BOOT_MENU = 0x0e, - FW_CFG_MAX_CPUS = 0x0f, - FW_CFG_KERNEL_ENTRY = 0x10, - FW_CFG_KERNEL_DATA = 0x11, - FW_CFG_INITRD_DATA = 0x12, - FW_CFG_CMDLINE_ADDR = 0x13, - FW_CFG_CMDLINE_SIZE = 0x14, - FW_CFG_CMDLINE_DATA = 0x15, - FW_CFG_SETUP_ADDR = 0x16, - FW_CFG_SETUP_SIZE = 0x17, - FW_CFG_SETUP_DATA = 0x18, - FW_CFG_FILE_DIR = 0x19, - FW_CFG_FILE_FIRST = 0x20, - FW_CFG_WRITE_CHANNEL = 0x4000, - FW_CFG_ARCH_LOCAL = 0x8000, - FW_CFG_INVALID = 0xffff, -}; - -enum { - BIOS_LINKER_LOADER_COMMAND_ALLOCATE = 0x1, - BIOS_LINKER_LOADER_COMMAND_ADD_POINTER = 0x2, - BIOS_LINKER_LOADER_COMMAND_ADD_CHECKSUM = 0x3, -}; - -enum { - BIOS_LINKER_LOADER_ALLOC_ZONE_HIGH = 0x1, - BIOS_LINKER_LOADER_ALLOC_ZONE_FSEG = 0x2, -}; - -#define FW_CFG_FILE_SLOTS 0x10 -#define FW_CFG_MAX_ENTRY (FW_CFG_FILE_FIRST + FW_CFG_FILE_SLOTS) -#define FW_CFG_ENTRY_MASK ~(FW_CFG_WRITE_CHANNEL | FW_CFG_ARCH_LOCAL) - -#define FW_CFG_MAX_FILE_PATH 56 -#define BIOS_LINKER_LOADER_FILESZ FW_CFG_MAX_FILE_PATH - -#define QEMU_FW_CFG_SIGNATURE (('Q' << 24) | ('E' << 16) | ('M' << 8) | 'U') - -#define FW_CFG_DMA_ERROR (1 << 0) -#define FW_CFG_DMA_READ (1 << 1) -#define FW_CFG_DMA_SKIP (1 << 2) -#define FW_CFG_DMA_SELECT (1 << 3) - -#define FW_CFG_DMA_ENABLED (1 << 1) - -struct fw_cfg_file { - __be32 size; - __be16 select; - __be16 reserved; - char name[FW_CFG_MAX_FILE_PATH]; -}; - -struct fw_file { - struct fw_cfg_file cfg; /* firmware file information */ - unsigned long addr; /* firmware file in-memory address */ - struct list_head list; /* list node to link to fw_list */ -}; - -struct fw_cfg_file_iter { - struct list_head *entry; /* structure to iterate file list */ -}; - -struct fw_cfg_dma_access { - __be32 control; - __be32 length; - __be64 address; -}; - -struct fw_cfg_arch_ops { - void (*arch_read_pio)(uint16_t selector, uint32_t size, - void *address); - void (*arch_read_dma)(struct fw_cfg_dma_access *dma); -}; - -struct bios_linker_entry { - __le32 command; - union { - /* - * COMMAND_ALLOCATE - allocate a table from @alloc.file - * subject to @alloc.align alignment (must be power of 2) - * and @alloc.zone (can be HIGH or FSEG) requirements. - * - * Must appear exactly once for each file, and before - * this file is referenced by any other command. - */ - struct { - char file[BIOS_LINKER_LOADER_FILESZ]; - __le32 align; - uint8_t zone; - } alloc; - - /* - * COMMAND_ADD_POINTER - patch the table (originating from - * @dest_file) at @pointer.offset, by adding a pointer to the - * table originating from @src_file. 1,2,4 or 8 byte unsigned - * addition is used depending on @pointer.size. - */ - struct { - char dest_file[BIOS_LINKER_LOADER_FILESZ]; - char src_file[BIOS_LINKER_LOADER_FILESZ]; - __le32 offset; - uint8_t size; - } pointer; - - /* - * COMMAND_ADD_CHECKSUM - calculate checksum of the range - * specified by @cksum_start and @cksum_length fields, - * and then add the value at @cksum.offset. - * Checksum simply sums -X for each byte X in the range - * using 8-bit math. - */ - struct { - char file[BIOS_LINKER_LOADER_FILESZ]; - __le32 offset; - __le32 start; - __le32 length; - } cksum; - - /* padding */ - char pad[124]; - }; -} __packed; - -/** - * Initialize QEMU fw_cfg interface - * - * @ops: arch specific read operations - */ -void qemu_fwcfg_init(struct fw_cfg_arch_ops *ops); - -void qemu_fwcfg_read_entry(uint16_t entry, uint32_t length, void *address); -int qemu_fwcfg_read_firmware_list(void); -struct fw_file *qemu_fwcfg_find_file(const char *name); - -/** - * Get system cpu number - * - * @return: cpu number in system - */ -int qemu_fwcfg_online_cpus(void); - -/* helper functions to iterate firmware file list */ -struct fw_file *qemu_fwcfg_file_iter_init(struct fw_cfg_file_iter *iter); -struct fw_file *qemu_fwcfg_file_iter_next(struct fw_cfg_file_iter *iter); -bool qemu_fwcfg_file_iter_end(struct fw_cfg_file_iter *iter); - -bool qemu_fwcfg_present(void); -bool qemu_fwcfg_dma_present(void); - -#endif diff --git a/include/qfw.h b/include/qfw.h new file mode 100644 index 00000000000..b0b3b5945ef --- /dev/null +++ b/include/qfw.h @@ -0,0 +1,176 @@ +/* + * (C) Copyright 2015 Miao Yan + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __FW_CFG__ +#define __FW_CFG__ + +#include + +enum qemu_fwcfg_items { + FW_CFG_SIGNATURE = 0x00, + FW_CFG_ID = 0x01, + FW_CFG_UUID = 0x02, + FW_CFG_RAM_SIZE = 0x03, + FW_CFG_NOGRAPHIC = 0x04, + FW_CFG_NB_CPUS = 0x05, + FW_CFG_MACHINE_ID = 0x06, + FW_CFG_KERNEL_ADDR = 0x07, + FW_CFG_KERNEL_SIZE = 0x08, + FW_CFG_KERNEL_CMDLINE = 0x09, + FW_CFG_INITRD_ADDR = 0x0a, + FW_CFG_INITRD_SIZE = 0x0b, + FW_CFG_BOOT_DEVICE = 0x0c, + FW_CFG_NUMA = 0x0d, + FW_CFG_BOOT_MENU = 0x0e, + FW_CFG_MAX_CPUS = 0x0f, + FW_CFG_KERNEL_ENTRY = 0x10, + FW_CFG_KERNEL_DATA = 0x11, + FW_CFG_INITRD_DATA = 0x12, + FW_CFG_CMDLINE_ADDR = 0x13, + FW_CFG_CMDLINE_SIZE = 0x14, + FW_CFG_CMDLINE_DATA = 0x15, + FW_CFG_SETUP_ADDR = 0x16, + FW_CFG_SETUP_SIZE = 0x17, + FW_CFG_SETUP_DATA = 0x18, + FW_CFG_FILE_DIR = 0x19, + FW_CFG_FILE_FIRST = 0x20, + FW_CFG_WRITE_CHANNEL = 0x4000, + FW_CFG_ARCH_LOCAL = 0x8000, + FW_CFG_INVALID = 0xffff, +}; + +enum { + BIOS_LINKER_LOADER_COMMAND_ALLOCATE = 0x1, + BIOS_LINKER_LOADER_COMMAND_ADD_POINTER = 0x2, + BIOS_LINKER_LOADER_COMMAND_ADD_CHECKSUM = 0x3, +}; + +enum { + BIOS_LINKER_LOADER_ALLOC_ZONE_HIGH = 0x1, + BIOS_LINKER_LOADER_ALLOC_ZONE_FSEG = 0x2, +}; + +#define FW_CFG_FILE_SLOTS 0x10 +#define FW_CFG_MAX_ENTRY (FW_CFG_FILE_FIRST + FW_CFG_FILE_SLOTS) +#define FW_CFG_ENTRY_MASK ~(FW_CFG_WRITE_CHANNEL | FW_CFG_ARCH_LOCAL) + +#define FW_CFG_MAX_FILE_PATH 56 +#define BIOS_LINKER_LOADER_FILESZ FW_CFG_MAX_FILE_PATH + +#define QEMU_FW_CFG_SIGNATURE (('Q' << 24) | ('E' << 16) | ('M' << 8) | 'U') + +#define FW_CFG_DMA_ERROR (1 << 0) +#define FW_CFG_DMA_READ (1 << 1) +#define FW_CFG_DMA_SKIP (1 << 2) +#define FW_CFG_DMA_SELECT (1 << 3) + +#define FW_CFG_DMA_ENABLED (1 << 1) + +struct fw_cfg_file { + __be32 size; + __be16 select; + __be16 reserved; + char name[FW_CFG_MAX_FILE_PATH]; +}; + +struct fw_file { + struct fw_cfg_file cfg; /* firmware file information */ + unsigned long addr; /* firmware file in-memory address */ + struct list_head list; /* list node to link to fw_list */ +}; + +struct fw_cfg_file_iter { + struct list_head *entry; /* structure to iterate file list */ +}; + +struct fw_cfg_dma_access { + __be32 control; + __be32 length; + __be64 address; +}; + +struct fw_cfg_arch_ops { + void (*arch_read_pio)(uint16_t selector, uint32_t size, + void *address); + void (*arch_read_dma)(struct fw_cfg_dma_access *dma); +}; + +struct bios_linker_entry { + __le32 command; + union { + /* + * COMMAND_ALLOCATE - allocate a table from @alloc.file + * subject to @alloc.align alignment (must be power of 2) + * and @alloc.zone (can be HIGH or FSEG) requirements. + * + * Must appear exactly once for each file, and before + * this file is referenced by any other command. + */ + struct { + char file[BIOS_LINKER_LOADER_FILESZ]; + __le32 align; + uint8_t zone; + } alloc; + + /* + * COMMAND_ADD_POINTER - patch the table (originating from + * @dest_file) at @pointer.offset, by adding a pointer to the + * table originating from @src_file. 1,2,4 or 8 byte unsigned + * addition is used depending on @pointer.size. + */ + struct { + char dest_file[BIOS_LINKER_LOADER_FILESZ]; + char src_file[BIOS_LINKER_LOADER_FILESZ]; + __le32 offset; + uint8_t size; + } pointer; + + /* + * COMMAND_ADD_CHECKSUM - calculate checksum of the range + * specified by @cksum_start and @cksum_length fields, + * and then add the value at @cksum.offset. + * Checksum simply sums -X for each byte X in the range + * using 8-bit math. + */ + struct { + char file[BIOS_LINKER_LOADER_FILESZ]; + __le32 offset; + __le32 start; + __le32 length; + } cksum; + + /* padding */ + char pad[124]; + }; +} __packed; + +/** + * Initialize QEMU fw_cfg interface + * + * @ops: arch specific read operations + */ +void qemu_fwcfg_init(struct fw_cfg_arch_ops *ops); + +void qemu_fwcfg_read_entry(uint16_t entry, uint32_t length, void *address); +int qemu_fwcfg_read_firmware_list(void); +struct fw_file *qemu_fwcfg_find_file(const char *name); + +/** + * Get system cpu number + * + * @return: cpu number in system + */ +int qemu_fwcfg_online_cpus(void); + +/* helper functions to iterate firmware file list */ +struct fw_file *qemu_fwcfg_file_iter_init(struct fw_cfg_file_iter *iter); +struct fw_file *qemu_fwcfg_file_iter_next(struct fw_cfg_file_iter *iter); +bool qemu_fwcfg_file_iter_end(struct fw_cfg_file_iter *iter); + +bool qemu_fwcfg_present(void); +bool qemu_fwcfg_dma_present(void); + +#endif -- cgit v1.3.1