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authorblueswir1 <blueswir1@c046a42c-6fe2-441c-8c8c-71466251a162>2008-09-18 18:27:29 +0000
committerblueswir1 <blueswir1@c046a42c-6fe2-441c-8c8c-71466251a162>2008-09-18 18:27:29 +0000
commit3cce62435ccdab61336c6b0ec709252c79f553ba (patch)
treee5eac803b085d5354ada0a8dfb3339b9f9c4de64
parentb03d0971b3744cf5778264c9aedb4084f779c774 (diff)
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Key/value based qemu<->guest firmware communication mechanism (Gleb Natapov)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5256 c046a42c-6fe2-441c-8c8c-71466251a162
-rw-r--r--Makefile.target1
-rw-r--r--hw/fw_cfg.c289
-rw-r--r--hw/fw_cfg.h28
-rw-r--r--hw/pc.c7
-rw-r--r--hw/sun4m.c14
-rw-r--r--hw/sun4u.c5
6 files changed, 344 insertions, 0 deletions
diff --git a/Makefile.target b/Makefile.target
index ac99df1..88e877f 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -474,6 +474,7 @@ endif #CONFIG_DARWIN_USER
ifndef CONFIG_USER_ONLY
OBJS=vl.o osdep.o monitor.o pci.o loader.o isa_mmio.o machine.o net-checksum.o
+OBJS+=fw_cfg.o
ifdef CONFIG_WIN32
OBJS+=block-raw-win32.o
else
diff --git a/hw/fw_cfg.c b/hw/fw_cfg.c
new file mode 100644
index 0000000..db5f0bd
--- /dev/null
+++ b/hw/fw_cfg.c
@@ -0,0 +1,289 @@
+/*
+ * QEMU Firmware configuration device emulation
+ *
+ * Copyright (c) 2008 Gleb Natapov
+ *
+ * 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 "hw.h"
+#include "isa.h"
+#include "fw_cfg.h"
+
+/* debug firmware config */
+//#define DEBUG_FW_CFG
+
+#ifdef DEBUG_FW_CFG
+#define FW_CFG_DPRINTF(fmt, args...) \
+ do { printf("FW_CFG: " fmt , ##args); } while (0)
+#else
+#define FW_CFG_DPRINTF(fmt, args...)
+#endif
+
+#define FW_CFG_SIZE 2
+
+typedef struct _FWCfgEntry {
+ uint16_t len;
+ uint8_t *data;
+ void *callback_opaque;
+ FWCfgCallback callback;
+} FWCfgEntry;
+
+typedef struct _FWCfgState {
+ FWCfgEntry entries[2][FW_CFG_MAX_ENTRY];
+ uint16_t cur_entry;
+ uint16_t cur_offset;
+} FWCfgState;
+
+static void fw_cfg_write(FWCfgState *s, uint8_t value)
+{
+ int arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL);
+ FWCfgEntry *e = &s->entries[arch][s->cur_entry & FW_CFG_ENTRY_MASK];
+
+ FW_CFG_DPRINTF("write %d\n", value);
+
+ if (s->cur_entry & FW_CFG_WRITE_CHANNEL && s->cur_offset < e->len) {
+ e->data[s->cur_offset++] = value;
+ if (s->cur_offset == e->len) {
+ e->callback(e->callback_opaque, e->data);
+ s->cur_offset = 0;
+ }
+ }
+}
+
+static int fw_cfg_select(FWCfgState *s, uint16_t key)
+{
+ int ret;
+
+ s->cur_offset = 0;
+ if ((key & FW_CFG_ENTRY_MASK) >= FW_CFG_MAX_ENTRY) {
+ s->cur_entry = FW_CFG_INVALID;
+ ret = 0;
+ } else {
+ s->cur_entry = key;
+ ret = 1;
+ }
+
+ FW_CFG_DPRINTF("select key %d (%sfound)\n", key, ret ? "" : "not ");
+
+ return ret;
+}
+
+static uint8_t fw_cfg_read(FWCfgState *s)
+{
+ int arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL);
+ FWCfgEntry *e = &s->entries[arch][s->cur_entry & FW_CFG_ENTRY_MASK];
+ uint8_t ret;
+
+ if (s->cur_entry == FW_CFG_INVALID || !e->data || s->cur_offset >= e->len)
+ ret = 0;
+ else
+ ret = e->data[s->cur_offset++];
+
+ FW_CFG_DPRINTF("read %d\n", ret);
+
+ return ret;
+}
+
+static uint32_t fw_cfg_io_readb(void *opaque, uint32_t addr)
+{
+ return fw_cfg_read(opaque);
+}
+
+static void fw_cfg_io_writeb(void *opaque, uint32_t addr, uint32_t value)
+{
+ return fw_cfg_write(opaque, (uint8_t)value);
+}
+
+static void fw_cfg_io_writew(void *opaque, uint32_t addr, uint32_t value)
+{
+ fw_cfg_select(opaque, (uint16_t)value);
+}
+
+static uint32_t fw_cfg_mem_readb(void *opaque, target_phys_addr_t addr)
+{
+ return fw_cfg_read(opaque);
+}
+
+static void fw_cfg_mem_writeb(void *opaque, target_phys_addr_t addr,
+ uint32_t value)
+{
+ return fw_cfg_write(opaque, (uint8_t)value);
+}
+
+static void fw_cfg_mem_writew(void *opaque, target_phys_addr_t addr,
+ uint32_t value)
+{
+ fw_cfg_select(opaque, (uint16_t)value);
+}
+
+static CPUReadMemoryFunc *fw_cfg_ctl_mem_read[3] = {
+ NULL,
+ NULL,
+ NULL,
+};
+
+static CPUWriteMemoryFunc *fw_cfg_ctl_mem_write[3] = {
+ NULL,
+ fw_cfg_mem_writew,
+ NULL,
+};
+
+static CPUReadMemoryFunc *fw_cfg_data_mem_read[3] = {
+ fw_cfg_mem_readb,
+ NULL,
+ NULL,
+};
+
+static CPUWriteMemoryFunc *fw_cfg_data_mem_write[3] = {
+ fw_cfg_mem_writeb,
+ NULL,
+ NULL,
+};
+
+static void fw_cfg_reset(void *opaque)
+{
+ FWCfgState *s = opaque;
+
+ fw_cfg_select(s, 0);
+}
+
+static void fw_cfg_save(QEMUFile *f, void *opaque)
+{
+ FWCfgState *s = opaque;
+
+ qemu_put_be16s(f, &s->cur_entry);
+ qemu_put_be16s(f, &s->cur_offset);
+}
+
+static int fw_cfg_load(QEMUFile *f, void *opaque, int version_id)
+{
+ FWCfgState *s = opaque;
+
+ if (version_id > 1)
+ return -EINVAL;
+
+ qemu_get_be16s(f, &s->cur_entry);
+ qemu_get_be16s(f, &s->cur_offset);
+
+ return 0;
+}
+
+int fw_cfg_add_bytes(void *opaque, uint16_t key, uint8_t *data, uint16_t len)
+{
+ FWCfgState *s = opaque;
+ int arch = !!(key & FW_CFG_ARCH_LOCAL);
+
+ key &= FW_CFG_ENTRY_MASK;
+
+ if (key >= FW_CFG_MAX_ENTRY)
+ return 0;
+
+ s->entries[arch][key].data = data;
+ s->entries[arch][key].len = len;
+
+ return 1;
+}
+
+int fw_cfg_add_i16(void *opaque, uint16_t key, uint16_t value)
+{
+ uint16_t *copy;
+
+ copy = qemu_malloc(sizeof(value));
+ if (!copy)
+ return 0;
+ *copy = cpu_to_le16(value);
+ return fw_cfg_add_bytes(opaque, key, (uint8_t *)copy, sizeof(value));
+}
+
+int fw_cfg_add_i32(void *opaque, uint16_t key, uint32_t value)
+{
+ uint32_t *copy;
+
+ copy = qemu_malloc(sizeof(value));
+ if (!copy)
+ return 0;
+ *copy = cpu_to_le32(value);
+ return fw_cfg_add_bytes(opaque, key, (uint8_t *)copy, sizeof(value));
+}
+
+int fw_cfg_add_i64(void *opaque, uint16_t key, uint64_t value)
+{
+ uint64_t *copy;
+
+ copy = qemu_malloc(sizeof(value));
+ if (!copy)
+ return 0;
+ *copy = cpu_to_le64(value);
+ return fw_cfg_add_bytes(opaque, key, (uint8_t *)copy, sizeof(value));
+}
+
+int fw_cfg_add_callback(void *opaque, uint16_t key, FWCfgCallback callback,
+ void *callback_opaque, uint8_t *data, size_t len)
+{
+ FWCfgState *s = opaque;
+ int arch = !!(key & FW_CFG_ARCH_LOCAL);
+
+ key &= FW_CFG_ENTRY_MASK;
+
+ if (key >= FW_CFG_MAX_ENTRY || !(key & FW_CFG_WRITE_CHANNEL)
+ || len > 65535)
+ return 0;
+
+ s->entries[arch][key].data = data;
+ s->entries[arch][key].len = len;
+ s->entries[arch][key].callback_opaque = callback_opaque;
+ s->entries[arch][key].callback = callback;
+
+ return 1;
+}
+
+void *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
+ target_phys_addr_t ctl_addr, target_phys_addr_t data_addr)
+{
+ FWCfgState *s;
+ int io_ctl_memory, io_data_memory;
+
+ s = qemu_mallocz(sizeof(FWCfgState));
+ if (!s)
+ return NULL;
+
+ if (ctl_port) {
+ register_ioport_write(ctl_port, 2, 2, fw_cfg_io_writew, s);
+ }
+ if (data_port) {
+ register_ioport_read(data_port, 1, 1, fw_cfg_io_readb, s);
+ register_ioport_write(data_port, 1, 1, fw_cfg_io_writeb, s);
+ }
+ if (ctl_addr) {
+ io_ctl_memory = cpu_register_io_memory(0, fw_cfg_ctl_mem_read,
+ fw_cfg_ctl_mem_write, s);
+ cpu_register_physical_memory(ctl_addr, FW_CFG_SIZE, io_ctl_memory);
+ }
+ if (data_addr) {
+ io_data_memory = cpu_register_io_memory(0, fw_cfg_data_mem_read,
+ fw_cfg_data_mem_write, s);
+ cpu_register_physical_memory(data_addr, FW_CFG_SIZE, io_data_memory);
+ }
+ fw_cfg_add_bytes(s, FW_CFG_SIGNATURE, (uint8_t *)"QEMU", 4);
+ register_savevm("fw_cfg", -1, 1, fw_cfg_save, fw_cfg_load, s);
+ qemu_register_reset(fw_cfg_reset, s);
+ fw_cfg_reset(s);
+
+ return s;
+}
diff --git a/hw/fw_cfg.h b/hw/fw_cfg.h
new file mode 100644
index 0000000..b949c70
--- /dev/null
+++ b/hw/fw_cfg.h
@@ -0,0 +1,28 @@
+#ifndef FW_CFG_H
+#define FW_CFG_H
+
+#define FW_CFG_SIGNATURE 0x00
+#define FW_CFG_ID 0x01
+#define FW_CFG_MAX_ENTRY 0x10
+
+#define FW_CFG_WRITE_CHANNEL 0x4000
+#define FW_CFG_ARCH_LOCAL 0x8000
+#define FW_CFG_ENTRY_MASK ~(FW_CFG_WRITE_CHANNEL | FW_CFG_ARCH_LOCAL)
+
+#define FW_CFG_INVALID 0xffff
+
+#ifndef NO_QEMU_PROTOS
+typedef void (*FWCfgCallback)(void *opaque, uint8_t *data);
+
+int fw_cfg_add_bytes(void *opaque, uint16_t key, uint8_t *data, uint16_t len);
+int fw_cfg_add_i16(void *opaque, uint16_t key, uint16_t value);
+int fw_cfg_add_i32(void *opaque, uint16_t key, uint32_t value);
+int fw_cfg_add_i64(void *opaque, uint16_t key, uint64_t value);
+int fw_cfg_add_callback(void *opaque, uint16_t key, FWCfgCallback callback,
+ void *callback_opaque, uint8_t *data, size_t len);
+void *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
+ target_phys_addr_t crl_addr, target_phys_addr_t data_addr);
+
+#endif /* NO_QEMU_PROTOS */
+
+#endif
diff --git a/hw/pc.c b/hw/pc.c
index 9fd1bdf..12b8119 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -32,6 +32,7 @@
#include "smbus.h"
#include "boards.h"
#include "console.h"
+#include "fw_cfg.h"
/* output Bochs bios info messages */
//#define DEBUG_BIOS
@@ -44,6 +45,7 @@
/* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */
#define ACPI_DATA_SIZE 0x10000
+#define BIOS_CFG_IOPORT 0x510
#define MAX_IDE_BUS 2
@@ -416,6 +418,8 @@ static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
static void bochs_bios_init(void)
{
+ void *fw_cfg;
+
register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL);
register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL);
register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL);
@@ -426,6 +430,9 @@ static void bochs_bios_init(void)
register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL);
register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL);
register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL);
+
+ fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
}
/* Generate an initial boot sector which sets state and jump to
diff --git a/hw/sun4m.c b/hw/sun4m.c
index 21f8899..9f2351a 100644
--- a/hw/sun4m.c
+++ b/hw/sun4m.c
@@ -34,6 +34,7 @@
#include "scsi.h"
#include "pc.h"
#include "isa.h"
+#include "fw_cfg.h"
//#define DEBUG_IRQ
@@ -78,6 +79,7 @@
#define PROM_SIZE_MAX (512 * 1024)
#define PROM_VADDR 0xffd00000
#define PROM_FILENAME "openbios-sparc32"
+#define CFG_ADDR 0xd00000510ULL
// Control plane, 8-bit and 24-bit planes
#define TCX_SIZE (9 * 1024 * 1024)
@@ -410,6 +412,7 @@ static void sun4m_hw_init(const struct hwdef *hwdef, ram_addr_t RAM_size,
char buf[1024];
BlockDriverState *fd[MAX_FD];
int drive_index;
+ void *fw_cfg;
/* init CPUs */
if (!cpu_model)
@@ -570,6 +573,9 @@ static void sun4m_hw_init(const struct hwdef *hwdef, ram_addr_t RAM_size,
if (hwdef->ecc_base != (target_phys_addr_t)-1)
ecc_init(hwdef->ecc_base, slavio_irq[hwdef->ecc_irq],
hwdef->ecc_version);
+
+ fw_cfg = fw_cfg_init(0, 0, CFG_ADDR, CFG_ADDR + 2);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
}
static void sun4c_hw_init(const struct hwdef *hwdef, ram_addr_t RAM_size,
@@ -589,6 +595,7 @@ static void sun4c_hw_init(const struct hwdef *hwdef, ram_addr_t RAM_size,
char buf[1024];
BlockDriverState *fd[MAX_FD];
int drive_index;
+ void *fw_cfg;
/* init CPU */
if (!cpu_model)
@@ -715,6 +722,9 @@ static void sun4c_hw_init(const struct hwdef *hwdef, ram_addr_t RAM_size,
nvram_init(nvram, (uint8_t *)&nd_table[0].macaddr, kernel_cmdline,
boot_device, RAM_size, kernel_size, graphic_width,
graphic_height, graphic_depth, hwdef->machine_id, "Sun4c");
+
+ fw_cfg = fw_cfg_init(0, 0, CFG_ADDR, CFG_ADDR + 2);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
}
static const struct hwdef hwdefs[] = {
@@ -1405,6 +1415,7 @@ static void sun4d_hw_init(const struct sun4d_hwdef *hwdef, ram_addr_t RAM_size,
int ret;
char buf[1024];
int drive_index;
+ void *fw_cfg;
/* init CPUs */
if (!cpu_model)
@@ -1528,6 +1539,9 @@ static void sun4d_hw_init(const struct sun4d_hwdef *hwdef, ram_addr_t RAM_size,
nvram_init(nvram, (uint8_t *)&nd_table[0].macaddr, kernel_cmdline,
boot_device, RAM_size, kernel_size, graphic_width,
graphic_height, graphic_depth, hwdef->machine_id, "Sun4d");
+
+ fw_cfg = fw_cfg_init(0, 0, CFG_ADDR, CFG_ADDR + 2);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
}
/* SPARCserver 1000 hardware initialisation */
diff --git a/hw/sun4u.c b/hw/sun4u.c
index 42a765d..82ead81 100644
--- a/hw/sun4u.c
+++ b/hw/sun4u.c
@@ -31,6 +31,7 @@
#include "sysemu.h"
#include "boards.h"
#include "firmware_abi.h"
+#include "fw_cfg.h"
#define KERNEL_LOAD_ADDR 0x00404000
#define CMDLINE_ADDR 0x003ff000
@@ -44,6 +45,7 @@
#define PROM_FILENAME "openbios-sparc64"
#define NVRAM_SIZE 0x2000
#define MAX_IDE_BUS 2
+#define BIOS_CFG_IOPORT 0x510
struct hwdef {
const char * const default_cpu_model;
@@ -270,6 +272,7 @@ static void sun4uv_init(ram_addr_t RAM_size, int vga_ram_size,
int drive_index;
BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
BlockDriverState *fd[MAX_FD];
+ void *fw_cfg;
linux_boot = (kernel_filename != NULL);
@@ -415,6 +418,8 @@ static void sun4uv_init(ram_addr_t RAM_size, int vga_ram_size,
graphic_width, graphic_height, graphic_depth,
(uint8_t *)&nd_table[0].macaddr);
+ fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0);
+ fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
}
static const struct hwdef hwdefs[] = {