From bf483392e6806225a7a7e03c57bad35530522cb9 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Mon, 29 Jun 2009 15:37:38 +0200 Subject: Expose fw_cfg v2 Multiboot passes options to the option rom using the fw_cfg device. Right now, that device is local to the bochs_bios_init function. Let's change that and expose it, so everyone may put data in there. Signed-off-by: Alexander Graf Signed-off-by: Anthony Liguori --- hw/pc.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'hw') diff --git a/hw/pc.c b/hw/pc.c index f54de7e..6994326 100644 --- a/hw/pc.c +++ b/hw/pc.c @@ -448,7 +448,7 @@ static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val) extern uint64_t node_cpumask[MAX_NODES]; -static void bochs_bios_init(void) +static void *bochs_bios_init(void) { void *fw_cfg; uint8_t *smbios_table; @@ -468,6 +468,7 @@ static void bochs_bios_init(void) 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); fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size); fw_cfg_add_bytes(fw_cfg, FW_CFG_ACPI_TABLES, (uint8_t *)acpi_tables, @@ -497,6 +498,8 @@ static void bochs_bios_init(void) } fw_cfg_add_bytes(fw_cfg, FW_CFG_NUMA, (uint8_t *)numa_fw_cfg, (1 + smp_cpus + nb_numa_nodes) * 8); + + return fw_cfg; } /* Generate an initial boot sector which sets state and jump to @@ -851,6 +854,7 @@ static void pc_init1(ram_addr_t ram_size, BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; BlockDriverState *fd[MAX_FD]; int using_vga = cirrus_vga_enabled || std_vga_enabled || vmsvga_enabled; + void *fw_cfg; if (ram_size >= 0xe0000000 ) { above_4g_mem_size = ram_size - 0xe0000000; @@ -971,7 +975,7 @@ static void pc_init1(ram_addr_t ram_size, cpu_register_physical_memory((uint32_t)(-bios_size), bios_size, bios_offset | IO_MEM_ROM); - bochs_bios_init(); + fw_cfg = bochs_bios_init(); if (linux_boot) { load_linux(0xc0000 + oprom_area_size, -- cgit v1.1