From 48354cc5a3744c9a56462e5053e1f267a0ce69de Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Sun, 18 Aug 2013 17:02:33 +0300 Subject: loader: support for unmapped ROM blobs Support ROM blobs not mapped into guest memory: same as ROM files really but use caller's buffer. Support invoking callback on access and return memory pointer making it easier for caller to update memory if necessary. Reviewed-by: Gerd Hoffmann Tested-by: Gerd Hoffmann Reviewed-by: Laszlo Ersek Reviewed-by: Igor Mammedov Tested-by: Igor Mammedov Signed-off-by: Michael S. Tsirkin --- hw/core/loader.c | 23 ++++++++++++++++++++--- hw/lm32/lm32_hwsetup.h | 2 +- include/hw/loader.h | 7 ++++--- 3 files changed, 25 insertions(+), 7 deletions(-) diff --git a/hw/core/loader.c b/hw/core/loader.c index 7b3d3ee6a0..449bd4c90a 100644 --- a/hw/core/loader.c +++ b/hw/core/loader.c @@ -700,10 +700,12 @@ err: return -1; } -int rom_add_blob(const char *name, const void *blob, size_t len, - hwaddr addr) +void *rom_add_blob(const char *name, const void *blob, size_t len, + hwaddr addr, const char *fw_file_name, + FWCfgReadCallback fw_callback, void *callback_opaque) { Rom *rom; + void *data = NULL; rom = g_malloc0(sizeof(*rom)); rom->name = g_strdup(name); @@ -713,7 +715,22 @@ int rom_add_blob(const char *name, const void *blob, size_t len, rom->data = g_malloc0(rom->datasize); memcpy(rom->data, blob, len); rom_insert(rom); - return 0; + if (fw_file_name && fw_cfg) { + char devpath[100]; + + snprintf(devpath, sizeof(devpath), "/rom@%s", fw_file_name); + + if (rom_file_in_ram) { + data = rom_set_mr(rom, OBJECT(fw_cfg), devpath); + } else { + data = rom->data; + } + + fw_cfg_add_file_callback(fw_cfg, fw_file_name, + fw_callback, callback_opaque, + data, rom->romsize); + } + return data; } /* This function is specific for elf program because we don't need to allocate diff --git a/hw/lm32/lm32_hwsetup.h b/hw/lm32/lm32_hwsetup.h index 3449bd8dfc..9fd5e697a7 100644 --- a/hw/lm32/lm32_hwsetup.h +++ b/hw/lm32/lm32_hwsetup.h @@ -73,7 +73,7 @@ static inline void hwsetup_free(HWSetup *hw) static inline void hwsetup_create_rom(HWSetup *hw, hwaddr base) { - rom_add_blob("hwsetup", hw->data, TARGET_PAGE_SIZE, base); + rom_add_blob("hwsetup", hw->data, TARGET_PAGE_SIZE, base, NULL, NULL, NULL); } static inline void hwsetup_add_u8(HWSetup *hw, uint8_t u) diff --git a/include/hw/loader.h b/include/hw/loader.h index 61457360f6..e0c576b5e7 100644 --- a/include/hw/loader.h +++ b/include/hw/loader.h @@ -40,8 +40,9 @@ extern bool rom_file_in_ram; int rom_add_file(const char *file, const char *fw_dir, hwaddr addr, int32_t bootindex); -int rom_add_blob(const char *name, const void *blob, size_t len, - hwaddr addr); +void *rom_add_blob(const char *name, const void *blob, size_t len, + hwaddr addr, const char *fw_file_name, + FWCfgReadCallback fw_callback, void *callback_opaque); int rom_add_elf_program(const char *name, void *data, size_t datasize, size_t romsize, hwaddr addr); int rom_load_all(void); @@ -53,7 +54,7 @@ void do_info_roms(Monitor *mon, const QDict *qdict); #define rom_add_file_fixed(_f, _a, _i) \ rom_add_file(_f, NULL, _a, _i) #define rom_add_blob_fixed(_f, _b, _l, _a) \ - rom_add_blob(_f, _b, _l, _a) + (rom_add_blob(_f, _b, _l, _a, NULL, NULL, NULL) ? 0 : -1) #define PC_ROM_MIN_VGA 0xc0000 #define PC_ROM_MIN_OPTION 0xc8000 -- cgit v1.2.1