[U-Boot] [PATCH 08/12] cmd: qfw: rename qemu_fw_cfg.[c|h] to qfw.[c|h]
Miao Yan
yanmiaobest at gmail.com
Fri May 13 08:29:40 CEST 2016
Make file names aligned with CONFIG_QFW
Signed-off-by: Miao Yan <yanmiaobest at gmail.com>
---
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/cmd_qfw.c | 2 +-
drivers/misc/Makefile | 2 +-
drivers/misc/qemu_fw_cfg.c | 181 -----------------------------------------
drivers/misc/qfw.c | 181 +++++++++++++++++++++++++++++++++++++++++
include/qemu_fw_cfg.h | 176 ---------------------------------------
include/qfw.h | 176 +++++++++++++++++++++++++++++++++++++++
10 files changed, 363 insertions(+), 363 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
diff --git a/arch/x86/cpu/mp_init.c b/arch/x86/cpu/mp_init.c
index 109b3d7..54285fa 100644
--- a/arch/x86/cpu/mp_init.c
+++ b/arch/x86/cpu/mp_init.c
@@ -12,7 +12,7 @@
#include <errno.h>
#include <malloc.h>
#ifdef CONFIG_QFW
-#include <qemu_fw_cfg.h>
+#include <qfw.h>
#endif
#include <asm/atomic.h>
#include <asm/cpu.h>
diff --git a/arch/x86/cpu/qemu/acpi_table.c b/arch/x86/cpu/qemu/acpi_table.c
index 4584fc7..0c54b80 100644
--- a/arch/x86/cpu/qemu/acpi_table.c
+++ b/arch/x86/cpu/qemu/acpi_table.c
@@ -9,7 +9,7 @@
#include <errno.h>
#include <malloc.h>
#ifdef CONFIG_QFW
-#include <qemu_fw_cfg.h>
+#include <qfw.h>
#endif
#include <asm/io.h>
#include <asm/tables.h>
diff --git a/arch/x86/cpu/qemu/cpu.c b/arch/x86/cpu/qemu/cpu.c
index 4d2989a..b1a965e 100644
--- a/arch/x86/cpu/qemu/cpu.c
+++ b/arch/x86/cpu/qemu/cpu.c
@@ -8,7 +8,7 @@
#include <cpu.h>
#include <dm.h>
#include <errno.h>
-#include <qemu_fw_cfg.h>
+#include <qfw.h>
#include <asm/cpu.h>
DECLARE_GLOBAL_DATA_PTR;
diff --git a/arch/x86/cpu/qemu/qemu.c b/arch/x86/cpu/qemu/qemu.c
index 716a0ac..35cd107 100644
--- a/arch/x86/cpu/qemu/qemu.c
+++ b/arch/x86/cpu/qemu/qemu.c
@@ -7,7 +7,7 @@
#include <common.h>
#include <pci.h>
#ifdef CONFIG_QFW
-#include <qemu_fw_cfg.h>
+#include <qfw.h>
#endif
#include <asm/irq.h>
#include <asm/post.h>
diff --git a/cmd/cmd_qfw.c b/cmd/cmd_qfw.c
index eefaf65..aeb576b 100644
--- a/cmd/cmd_qfw.c
+++ b/cmd/cmd_qfw.c
@@ -7,7 +7,7 @@
#include <common.h>
#include <command.h>
#include <errno.h>
-#include <qemu_fw_cfg.h>
+#include <qfw.h>
/*
* This function prepares kernel for zboot. It loads kernel data
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 4893086..98704f2 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 0700641..0000000
--- a/drivers/misc/qemu_fw_cfg.c
+++ /dev/null
@@ -1,181 +0,0 @@
-/*
- * (C) Copyright 2015 Miao Yan <yanmiaobest at gmail.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <command.h>
-#include <errno.h>
-#include <malloc.h>
-#include <qemu_fw_cfg.h>
-#include <asm/io.h>
-#include <linux/list.h>
-
-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 0000000..9f1bb2d
--- /dev/null
+++ b/drivers/misc/qfw.c
@@ -0,0 +1,181 @@
+/*
+ * (C) Copyright 2015 Miao Yan <yanmiaobest at gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <errno.h>
+#include <malloc.h>
+#include <qfw.h>
+#include <asm/io.h>
+#include <linux/list.h>
+
+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 b0b3b59..0000000
--- a/include/qemu_fw_cfg.h
+++ /dev/null
@@ -1,176 +0,0 @@
-/*
- * (C) Copyright 2015 Miao Yan <yanmiaobest at gmail.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#ifndef __FW_CFG__
-#define __FW_CFG__
-
-#include <linux/list.h>
-
-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 0000000..b0b3b59
--- /dev/null
+++ b/include/qfw.h
@@ -0,0 +1,176 @@
+/*
+ * (C) Copyright 2015 Miao Yan <yanmiaobest at gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __FW_CFG__
+#define __FW_CFG__
+
+#include <linux/list.h>
+
+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
--
1.9.1
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