From 9b5dbe135887cf0853c175780f5b16b3fd0974a4 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Mon, 18 Jan 2016 11:55:44 +0100 Subject: x86: baytrail: Add documentation for FSP memory-down values This patch adds the documentation for the memory-down parameters of the Intel FSP. To configure a board without SPD DDR DIMM but with onboard DDR chips. The values are taken from the coreboot header: src/soc/intel/fsp_baytrail/chip.h (git ID da1a70ea from 2016-01-16 as reference). Signed-off-by: Stefan Roese Cc: Andrew Bradford Cc: Bin Meng Cc: Simon Glass Reviewed-by: Bin Meng diff --git a/doc/device-tree-bindings/misc/intel,baytrail-fsp.txt b/doc/device-tree-bindings/misc/intel,baytrail-fsp.txt index b44b5b5..07fa46e 100644 --- a/doc/device-tree-bindings/misc/intel,baytrail-fsp.txt +++ b/doc/device-tree-bindings/misc/intel,baytrail-fsp.txt @@ -74,12 +74,41 @@ discovered by the FSP and used to setup main memory. # Integer properties: - - fsp,dram-speed + - fsp,dram-speed: + 0x0: "800 MHz" + 0x1: "1066 MHz" + 0x2: "1333 MHz" + 0x3: "1600 MHz" + - fsp,dram-type + 0x0: "DDR3" + 0x1: "DDR3L" + 0x2: "DDR3U" + 0x4: "LPDDR2" + 0x5: "LPDDR3" + 0x6: "DDR4" + - fsp,dimm-width + 0x0: "x8" + 0x1: "x16" + 0x2: "x32" + - fsp,dimm-density + 0x0: "1 Gbit" + 0x1: "2 Gbit" + 0x2: "4 Gbit" + 0x3: "8 Gbit" + - fsp,dimm-bus-width + 0x0: "8 bits" + 0x1: "16 bits" + 0x2: "32 bits" + 0x3: "64 bits" + - fsp,dimm-sides + 0x0: "1 rank" + 0x1: "2 ranks" + - fsp,dimm-tcl - fsp,dimm-trpt-rcd - fsp,dimm-twr -- cgit v0.10.2 From 0a34a5fd2794a87c43e8d009ccb711e6839843b2 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Mon, 18 Jan 2016 14:49:57 +0100 Subject: x86: x86-common.h: Add generic FS commands This patch adds the generic FS commands (ls, load) to all x86 boards. Signed-off-by: Stefan Roese Cc: Miao Yan Cc: Bin Meng Cc: Simon Glass Acked-by: Bin Meng diff --git a/include/configs/x86-common.h b/include/configs/x86-common.h index 4182a3b..dc7b227 100644 --- a/include/configs/x86-common.h +++ b/include/configs/x86-common.h @@ -100,6 +100,7 @@ * Command line configuration. */ #define CONFIG_CMD_DATE +#define CONFIG_CMD_FS_GENERIC #define CONFIG_CMD_FPGA_LOADMK #define CONFIG_CMD_IO #define CONFIG_CMD_IRQ -- cgit v0.10.2 From 85056932f2bad4b6749d42c983d2219ae70fa741 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Tue, 19 Jan 2016 14:05:10 +0100 Subject: misc: Add simple driver to enable the legacy UART on Winbond Super IO chips On most x86 boards, the legacy serial ports (io address 0x3f8/0x2f8) are provided by a superio chip connected to the LPC bus. We must program the superio chip so that serial ports are available for us. Signed-off-by: Stefan Roese Cc: Bin Meng Cc: Simon Glass Reviewed-by: Bin Meng diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index cba2363..af8667f 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -130,4 +130,12 @@ config RESET effect a reset. The uclass will try all available drivers when reset_walk() is called. +config WINBOND_W83627 + bool "Enable Winbond Super I/O driver" + help + If you say Y here, you will get support for the Winbond + W83627 Super I/O driver. This can be used to enable the + legacy UART or other devices in the Winbond Super IO chips + on X86 platforms. + endmenu diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index cd4846b..e1e3c6b 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -41,3 +41,4 @@ obj-$(CONFIG_FSL_SEC_MON) += fsl_sec_mon.o obj-$(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 diff --git a/drivers/misc/winbond_w83627.c b/drivers/misc/winbond_w83627.c new file mode 100644 index 0000000..59db7d9 --- /dev/null +++ b/drivers/misc/winbond_w83627.c @@ -0,0 +1,41 @@ +/* + * Copyright (C) 2016 Stefan Roese + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +#define WINBOND_ENTRY_KEY 0x87 +#define WINBOND_EXIT_KEY 0xaa + +/* Enable configuration: pass entry key '0x87' into index port dev twice */ +static void pnp_enter_conf_state(u16 dev) +{ + u16 port = dev >> 8; + + outb(WINBOND_ENTRY_KEY, port); + outb(WINBOND_ENTRY_KEY, port); +} + +/* Disable configuration: pass exit key '0xAA' into index port dev */ +static void pnp_exit_conf_state(u16 dev) +{ + u16 port = dev >> 8; + + outb(WINBOND_EXIT_KEY, port); +} + +/* Bring up early serial debugging output before the RAM is initialized */ +void winbond_enable_serial(uint dev, uint iobase, uint irq) +{ + pnp_enter_conf_state(dev); + pnp_set_logical_device(dev); + pnp_set_enable(dev, 0); + pnp_set_iobase(dev, PNP_IDX_IO0, iobase); + pnp_set_irq(dev, PNP_IDX_IRQ0, irq); + pnp_set_enable(dev, 1); + pnp_exit_conf_state(dev); +} diff --git a/include/winbond_w83627.h b/include/winbond_w83627.h new file mode 100644 index 0000000..ac3bec6 --- /dev/null +++ b/include/winbond_w83627.h @@ -0,0 +1,35 @@ +/* + * Copyright (C) 2016 Stefan Roese + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _WINBOND_W83627_H_ +#define _WINBOND_W83627_H_ + +/* I/O address of Winbond Super IO chip */ +#define WINBOND_IO_PORT 0x2e + +/* Logical device number */ +#define W83627DHG_FDC 0 /* Floppy */ +#define W83627DHG_PP 1 /* Parallel port */ +#define W83627DHG_SP1 2 /* Com1 */ +#define W83627DHG_SP2 3 /* Com2 */ +#define W83627DHG_KBC 5 /* PS/2 keyboard & mouse */ +#define W83627DHG_SPI 6 /* Serial peripheral interface */ +#define W83627DHG_WDTO_PLED 8 /* WDTO#, PLED */ +#define W83627DHG_ACPI 10 /* ACPI */ +#define W83627DHG_HWM 11 /* Hardware monitor */ +#define W83627DHG_PECI_SST 12 /* PECI, SST */ + +/** + * Configure the base I/O port of the specified serial device and enable the + * serial device. + * + * @dev: high 8 bits = super I/O port, low 8 bits = logical device number + * @iobase: processor I/O port address to assign to this serial device + * @irq: processor IRQ number to assign to this serial device + */ +void winbond_enable_serial(uint dev, uint iobase, uint irq); + +#endif /* _WINBOND_W83627_H_ */ -- cgit v0.10.2 From d521197d69c0fe85afdd75c537783adf95905ede Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Tue, 19 Jan 2016 14:24:12 +0100 Subject: x86: baytrail: Add option to disable the internal UART to setup_early_uart() This patch adds a parameter to the function setup_early_uart() to either enable or disable the internal BayTrail legacy UART. Since the name setup_early_uart() does not match its functionality any more, lets rename it to setup_internal_uart() as well in this patch. Signed-off-by: Stefan Roese Reviewed-by: Bin Meng Reviewed-by: Simon Glass diff --git a/arch/x86/cpu/baytrail/early_uart.c b/arch/x86/cpu/baytrail/early_uart.c index b64a3a9..471d592 100644 --- a/arch/x86/cpu/baytrail/early_uart.c +++ b/arch/x86/cpu/baytrail/early_uart.c @@ -59,11 +59,15 @@ static void x86_pci_write_config32(int dev, unsigned int where, u32 value) } /* This can be called after memory-mapped PCI is working */ -int setup_early_uart(void) +int setup_internal_uart(int enable) { - /* Enable the legacy UART hardware. */ + /* Enable or disable the legacy UART hardware */ x86_pci_write_config32(PCI_DEV_CONFIG(0, LPC_DEV, LPC_FUNC), UART_CONT, - 1); + enable); + + /* All done for the disable part, so just return */ + if (!enable) + return 0; /* * Set up the pads to the UART function. This allows the signals to diff --git a/arch/x86/include/asm/u-boot-x86.h b/arch/x86/include/asm/u-boot-x86.h index 9c143ca..031740b 100644 --- a/arch/x86/include/asm/u-boot-x86.h +++ b/arch/x86/include/asm/u-boot-x86.h @@ -45,7 +45,7 @@ void dram_init_banksize(void); int default_print_cpuinfo(void); /* Set up a UART which can be used with printch(), printhex8(), etc. */ -int setup_early_uart(void); +int setup_internal_uart(int enable); void setup_pcat_compatibility(void); diff --git a/arch/x86/lib/fsp/fsp_support.c b/arch/x86/lib/fsp/fsp_support.c index 875c96a..29fa060 100644 --- a/arch/x86/lib/fsp/fsp_support.c +++ b/arch/x86/lib/fsp/fsp_support.c @@ -111,7 +111,7 @@ void fsp_init(u32 stack_top, u32 boot_mode, void *nvs_buf) #endif #ifdef CONFIG_DEBUG_UART - setup_early_uart(); + setup_internal_uart(1); #endif fsp_hdr = find_fsp_header(); diff --git a/doc/README.x86 b/doc/README.x86 index 36aaef0..6d9cb10 100644 --- a/doc/README.x86 +++ b/doc/README.x86 @@ -706,7 +706,7 @@ the board, then you can use post_code() calls from C or assembler to monitor boot progress. This can be good for debugging. If not, you can try to get serial working as early as possible. The early -debug serial port may be useful here. See setup_early_uart() for an example. +debug serial port may be useful here. See setup_internal_uart() for an example. During the U-Boot porting, one of the important steps is to write correct PIRQ routing information in the board device tree. Without it, device drivers in the -- cgit v0.10.2 From 25757220d6c11645b32489e9c8318559815b0dee Mon Sep 17 00:00:00 2001 From: Miao Yan Date: Wed, 20 Jan 2016 01:57:04 -0800 Subject: x86: qemu: re-structure qemu_fwcfg_list_firmware() Re-write the logic in qemu_fwcfg_list_firmware(), add a function qemu_fwcfg_read_firmware_list() to handle reading firmware list. Signed-off-by: Miao Yan Reviewed-by: Bin Meng Tested-by: Bin Meng diff --git a/arch/x86/cpu/qemu/fw_cfg.c b/arch/x86/cpu/qemu/fw_cfg.c index 0599214..bcd34af 100644 --- a/arch/x86/cpu/qemu/fw_cfg.c +++ b/arch/x86/cpu/qemu/fw_cfg.c @@ -10,10 +10,13 @@ #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) @@ -162,29 +165,61 @@ static int qemu_fwcfg_setup_kernel(void *load_addr, void *initrd_addr) return 0; } -static int qemu_fwcfg_list_firmware(void) +static int qemu_fwcfg_read_firmware_list(void) { int i; uint32_t count; - struct fw_cfg_files *files; + 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); - files = malloc(count * sizeof(struct fw_cfg_file)); - if (!files) - return -ENOMEM; - - files->count = count; - qemu_fwcfg_read_entry(FW_CFG_INVALID, - count * sizeof(struct fw_cfg_file), - files->files); - - for (i = 0; i < files->count; i++) - printf("%-56s\n", files->files[i].name); - free(files); + 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; +} + +static int qemu_fwcfg_list_firmware(void) +{ + int ret; + struct list_head *entry; + struct fw_file *file; + + /* make sure fw_list is loaded */ + ret = qemu_fwcfg_read_firmware_list(); + if (ret) + return ret; + + list_for_each(entry, &fw_list) { + file = list_entry(entry, struct fw_file, list); + printf("%-56s\n", file->cfg.name); + } + return 0; } diff --git a/arch/x86/include/asm/fw_cfg.h b/arch/x86/include/asm/fw_cfg.h index fb110fa..2acf43e 100644 --- a/arch/x86/include/asm/fw_cfg.h +++ b/arch/x86/include/asm/fw_cfg.h @@ -12,6 +12,8 @@ #define FW_DMA_PORT_LOW 0x514 #define FW_DMA_PORT_HIGH 0x518 +#include + enum qemu_fwcfg_items { FW_CFG_SIGNATURE = 0x00, FW_CFG_ID = 0x01, @@ -67,9 +69,10 @@ struct fw_cfg_file { char name[FW_CFG_MAX_FILE_PATH]; }; -struct fw_cfg_files { - __be32 count; - struct fw_cfg_file files[]; +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_dma_access { -- cgit v0.10.2 From a3b15a055662ea4a8db6b8f70aa870b541e0cda9 Mon Sep 17 00:00:00 2001 From: Miao Yan Date: Wed, 20 Jan 2016 01:57:05 -0800 Subject: x86: qemu: setup PM IO base for ACPI in southbridge Enable ACPI IO space for piix4 (for pc board) and ich9 (for q35 board) Signed-off-by: Miao Yan Reviewed-by: Bin Meng Tested-by: Bin Meng diff --git a/arch/x86/cpu/qemu/Kconfig b/arch/x86/cpu/qemu/Kconfig index 4f98621..6808c9a 100644 --- a/arch/x86/cpu/qemu/Kconfig +++ b/arch/x86/cpu/qemu/Kconfig @@ -17,4 +17,11 @@ config SYS_CAR_SIZE hex default 0x10000 +config ACPI_PM1_BASE + hex + default 0xe400 + help + ACPI Power Managment 1 (PM1) i/o-mapped base address. + This device is defined in ACPI specification, with 16 bytes in size. + endif diff --git a/arch/x86/cpu/qemu/qemu.c b/arch/x86/cpu/qemu/qemu.c index 5a7b929..f8af566 100644 --- a/arch/x86/cpu/qemu/qemu.c +++ b/arch/x86/cpu/qemu/qemu.c @@ -15,6 +15,31 @@ static bool i440fx; +static void enable_pm_piix(void) +{ + u8 en; + u16 cmd; + + /* Set the PM I/O base */ + x86_pci_write_config32(PIIX_PM, PMBA, CONFIG_ACPI_PM1_BASE | 1); + + /* Enable access to the PM I/O space */ + cmd = x86_pci_read_config16(PIIX_PM, PCI_COMMAND); + cmd |= PCI_COMMAND_IO; + x86_pci_write_config16(PIIX_PM, PCI_COMMAND, cmd); + + /* PM I/O Space Enable (PMIOSE) */ + en = x86_pci_read_config8(PIIX_PM, PMREGMISC); + en |= PMIOSE; + x86_pci_write_config8(PIIX_PM, PMREGMISC, en); +} + +static void enable_pm_ich9(void) +{ + /* Set the PM I/O base */ + x86_pci_write_config32(ICH9_PM, PMBA, CONFIG_ACPI_PM1_BASE | 1); +} + static void qemu_chipset_init(void) { u16 device, xbcs; @@ -53,10 +78,14 @@ static void qemu_chipset_init(void) xbcs = x86_pci_read_config16(PIIX_ISA, XBCS); xbcs |= APIC_EN; x86_pci_write_config16(PIIX_ISA, XBCS, xbcs); + + enable_pm_piix(); } else { /* Configure PCIe ECAM base address */ x86_pci_write_config32(PCI_BDF(0, 0, 0), PCIEX_BAR, CONFIG_PCIE_ECAM_BASE | BAR_EN); + + enable_pm_ich9(); } qemu_fwcfg_init(); diff --git a/arch/x86/include/asm/arch-qemu/device.h b/arch/x86/include/asm/arch-qemu/device.h index 75a435e..38ab798 100644 --- a/arch/x86/include/asm/arch-qemu/device.h +++ b/arch/x86/include/asm/arch-qemu/device.h @@ -13,6 +13,8 @@ #define PIIX_ISA PCI_BDF(0, 1, 0) #define PIIX_IDE PCI_BDF(0, 1, 1) #define PIIX_USB PCI_BDF(0, 1, 2) +#define PIIX_PM PCI_BDF(0, 1, 3) +#define ICH9_PM PCI_BDF(0, 0x1f, 0) #define I440FX_VGA PCI_BDF(0, 2, 0) #define QEMU_Q35 PCI_BDF(0, 0, 0) diff --git a/arch/x86/include/asm/arch-qemu/qemu.h b/arch/x86/include/asm/arch-qemu/qemu.h index b67d342..a85eee8 100644 --- a/arch/x86/include/asm/arch-qemu/qemu.h +++ b/arch/x86/include/asm/arch-qemu/qemu.h @@ -33,4 +33,9 @@ #define LOW_RAM_ADDR 0x34 #define HIGH_RAM_ADDR 0x35 +/* PM registers */ +#define PMBA 0x40 +#define PMREGMISC 0x80 +#define PMIOSE (1 << 0) + #endif /* _ARCH_QEMU_H_ */ -- cgit v0.10.2 From fa287b158099b5b2159ecbbcc4acb2d5dc6714cf Mon Sep 17 00:00:00 2001 From: Miao Yan Date: Wed, 20 Jan 2016 01:57:06 -0800 Subject: x86: qemu: add the ability to load and link ACPI tables from QEMU This patch adds the ability to load and link ACPI tables provided by QEMU. QEMU tells guests how to load and patch ACPI tables through its fw_cfg interface, by adding a firmware file 'etc/table-loader'. Guests are supposed to parse this file and execute corresponding QEMU commands. Signed-off-by: Miao Yan Reviewed-by: Bin Meng Tested-by: Bin Meng diff --git a/arch/x86/cpu/qemu/Makefile b/arch/x86/cpu/qemu/Makefile index 176ea54..801413a 100644 --- a/arch/x86/cpu/qemu/Makefile +++ b/arch/x86/cpu/qemu/Makefile @@ -8,4 +8,6 @@ ifndef CONFIG_EFI_STUB obj-y += car.o dram.o endif obj-y += cpu.o fw_cfg.o qemu.o +ifndef CONFIG_QEMU_ACPI_TABLE obj-$(CONFIG_GENERATE_ACPI_TABLE) += acpi.o dsdt.o +endif diff --git a/arch/x86/cpu/qemu/fw_cfg.c b/arch/x86/cpu/qemu/fw_cfg.c index bcd34af..5ea7a6e 100644 --- a/arch/x86/cpu/qemu/fw_cfg.c +++ b/arch/x86/cpu/qemu/fw_cfg.c @@ -10,7 +10,10 @@ #include #include #include +#include +#include #include +#include static bool fwcfg_present; static bool fwcfg_dma_present; @@ -204,6 +207,256 @@ err: return -ENOMEM; } +#ifdef CONFIG_QEMU_ACPI_TABLE +static 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; +} + +/* + * This function allocates memory for ACPI tables + * + * @entry : BIOS linker command entry which tells where to allocate memory + * (either high memory or low memory) + * @addr : The address that should be used for low memory allcation. If the + * memory allocation request is 'ZONE_HIGH' then this parameter will + * be ignored. + * @return: 0 on success, or negative value on failure + */ +static int bios_linker_allocate(struct bios_linker_entry *entry, + unsigned long *addr) +{ + uint32_t size, align; + struct fw_file *file; + unsigned long aligned_addr; + + align = le32_to_cpu(entry->alloc.align); + /* align must be power of 2 */ + if (align & (align - 1)) { + printf("error: wrong alignment %u\n", align); + return -EINVAL; + } + + file = qemu_fwcfg_find_file(entry->alloc.file); + if (!file) { + printf("error: can't find file %s\n", entry->alloc.file); + return -ENOENT; + } + + size = be32_to_cpu(file->cfg.size); + + /* + * ZONE_HIGH means we need to allocate from high memory, since + * malloc space is already at the end of RAM, so we directly use it. + * If allocation zone is ZONE_FSEG, then we use the 'addr' passed + * in which is low memory + */ + if (entry->alloc.zone == BIOS_LINKER_LOADER_ALLOC_ZONE_HIGH) { + aligned_addr = (unsigned long)memalign(align, size); + if (!aligned_addr) { + printf("error: allocating resource\n"); + return -ENOMEM; + } + } else if (entry->alloc.zone == BIOS_LINKER_LOADER_ALLOC_ZONE_FSEG) { + aligned_addr = ALIGN(*addr, align); + } else { + printf("error: invalid allocation zone\n"); + return -EINVAL; + } + + debug("bios_linker_allocate: allocate file %s, size %u, zone %d, align %u, addr 0x%lx\n", + file->cfg.name, size, entry->alloc.zone, align, aligned_addr); + + qemu_fwcfg_read_entry(be16_to_cpu(file->cfg.select), + size, (void *)aligned_addr); + file->addr = aligned_addr; + + /* adjust address for low memory allocation */ + if (entry->alloc.zone == BIOS_LINKER_LOADER_ALLOC_ZONE_FSEG) + *addr = (aligned_addr + size); + + return 0; +} + +/* + * This function patches ACPI tables previously loaded + * by bios_linker_allocate() + * + * @entry : BIOS linker command entry which tells how to patch + * ACPI tables + * @return: 0 on success, or negative value on failure + */ +static int bios_linker_add_pointer(struct bios_linker_entry *entry) +{ + struct fw_file *dest, *src; + uint32_t offset = le32_to_cpu(entry->pointer.offset); + uint64_t pointer = 0; + + dest = qemu_fwcfg_find_file(entry->pointer.dest_file); + if (!dest || !dest->addr) + return -ENOENT; + src = qemu_fwcfg_find_file(entry->pointer.src_file); + if (!src || !src->addr) + return -ENOENT; + + debug("bios_linker_add_pointer: dest->addr 0x%lx, src->addr 0x%lx, offset 0x%x size %u, 0x%llx\n", + dest->addr, src->addr, offset, entry->pointer.size, pointer); + + memcpy(&pointer, (char *)dest->addr + offset, entry->pointer.size); + pointer = le64_to_cpu(pointer); + pointer += (unsigned long)src->addr; + pointer = cpu_to_le64(pointer); + memcpy((char *)dest->addr + offset, &pointer, entry->pointer.size); + + return 0; +} + +/* + * This function updates checksum fields of ACPI tables previously loaded + * by bios_linker_allocate() + * + * @entry : BIOS linker command entry which tells where to update ACPI table + * checksums + * @return: 0 on success, or negative value on failure + */ +static int bios_linker_add_checksum(struct bios_linker_entry *entry) +{ + struct fw_file *file; + uint8_t *data, cksum = 0; + uint8_t *cksum_start; + + file = qemu_fwcfg_find_file(entry->cksum.file); + if (!file || !file->addr) + return -ENOENT; + + data = (uint8_t *)(file->addr + le32_to_cpu(entry->cksum.offset)); + cksum_start = (uint8_t *)(file->addr + le32_to_cpu(entry->cksum.start)); + cksum = table_compute_checksum(cksum_start, + le32_to_cpu(entry->cksum.length)); + *data = cksum; + + return 0; +} + +unsigned install_e820_map(unsigned max_entries, struct e820entry *entries) +{ + entries[0].addr = 0; + entries[0].size = ISA_START_ADDRESS; + entries[0].type = E820_RAM; + + entries[1].addr = ISA_START_ADDRESS; + entries[1].size = ISA_END_ADDRESS - ISA_START_ADDRESS; + entries[1].type = E820_RESERVED; + + /* + * since we use memalign(malloc) to allocate high memory for + * storing ACPI tables, we need to reserve them in e820 tables, + * otherwise kernel will reclaim them and data will be corrupted + */ + entries[2].addr = ISA_END_ADDRESS; + entries[2].size = gd->relocaddr - TOTAL_MALLOC_LEN - ISA_END_ADDRESS; + entries[2].type = E820_RAM; + + /* for simplicity, reserve entire malloc space */ + entries[3].addr = gd->relocaddr - TOTAL_MALLOC_LEN; + entries[3].size = TOTAL_MALLOC_LEN; + entries[3].type = E820_RESERVED; + + entries[4].addr = gd->relocaddr; + entries[4].size = gd->ram_size - gd->relocaddr; + entries[4].type = E820_RESERVED; + + entries[5].addr = CONFIG_PCIE_ECAM_BASE; + entries[5].size = CONFIG_PCIE_ECAM_SIZE; + entries[5].type = E820_RESERVED; + + return 6; +} + +/* This function loads and patches ACPI tables provided by QEMU */ +unsigned long write_acpi_tables(unsigned long addr) +{ + int i, ret = 0; + struct fw_file *file; + struct bios_linker_entry *table_loader; + struct bios_linker_entry *entry; + uint32_t size; + struct list_head *list; + + /* make sure fw_list is loaded */ + ret = qemu_fwcfg_read_firmware_list(); + if (ret) { + printf("error: can't read firmware file list\n"); + return addr; + } + + file = qemu_fwcfg_find_file("etc/table-loader"); + if (!file) { + printf("error: can't find etc/table-loader\n"); + return addr; + } + + size = be32_to_cpu(file->cfg.size); + if ((size % sizeof(*entry)) != 0) { + printf("error: table-loader maybe corrupted\n"); + return addr; + } + + table_loader = malloc(size); + if (!table_loader) { + printf("error: no memory for table-loader\n"); + return addr; + } + + qemu_fwcfg_read_entry(be16_to_cpu(file->cfg.select), + size, table_loader); + + for (i = 0; i < (size / sizeof(*entry)); i++) { + entry = table_loader + i; + switch (le32_to_cpu(entry->command)) { + case BIOS_LINKER_LOADER_COMMAND_ALLOCATE: + ret = bios_linker_allocate(entry, &addr); + if (ret) + goto out; + break; + case BIOS_LINKER_LOADER_COMMAND_ADD_POINTER: + ret = bios_linker_add_pointer(entry); + if (ret) + goto out; + break; + case BIOS_LINKER_LOADER_COMMAND_ADD_CHECKSUM: + ret = bios_linker_add_checksum(entry); + if (ret) + goto out; + break; + default: + break; + } + } + +out: + if (ret) { + list_for_each(list, &fw_list) { + file = list_entry(list, struct fw_file, list); + if (file->addr) + free((void *)file->addr); + } + } + + free(table_loader); + return addr; +} +#endif + static int qemu_fwcfg_list_firmware(void) { int ret; diff --git a/arch/x86/include/asm/fw_cfg.h b/arch/x86/include/asm/fw_cfg.h index 2acf43e..e9450c6 100644 --- a/arch/x86/include/asm/fw_cfg.h +++ b/arch/x86/include/asm/fw_cfg.h @@ -47,11 +47,23 @@ enum qemu_fwcfg_items { 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') @@ -81,6 +93,55 @@ struct fw_cfg_dma_access { __be64 address; }; +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 */ diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile index d9fc296..50bc69a 100644 --- a/arch/x86/lib/Makefile +++ b/arch/x86/lib/Makefile @@ -32,7 +32,9 @@ obj-$(CONFIG_X86_RAMTEST) += ramtest.o obj-y += sfi.o obj-$(CONFIG_GENERATE_SMBIOS_TABLE) += smbios.o obj-y += string.o +ifndef CONFIG_QEMU_ACPI_TABLE obj-$(CONFIG_GENERATE_ACPI_TABLE) += acpi_table.o +endif obj-y += tables.o obj-$(CONFIG_CMD_ZBOOT) += zimage.o obj-$(CONFIG_HAVE_FSP) += fsp/ diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c index ab1db7e..2ec5ad2 100644 --- a/arch/x86/lib/acpi_table.c +++ b/arch/x86/lib/acpi_table.c @@ -331,6 +331,10 @@ static void acpi_create_ssdt_generator(acpi_header_t *ssdt, ssdt->checksum = table_compute_checksum((void *)ssdt, ssdt->length); } +/* + * QEMU's version of write_acpi_tables is defined in + * arch/x86/cpu/qemu/fw_cfg.c + */ unsigned long write_acpi_tables(unsigned long start) { unsigned long current; -- cgit v0.10.2 From a5dd1e6726c1bc249eaf230bad3eb14764a71998 Mon Sep 17 00:00:00 2001 From: Miao Yan Date: Wed, 20 Jan 2016 01:57:07 -0800 Subject: x86: config option for loading ACPI table from QEMU This patch adds a config option for loading ACPI table from QEMU. When enabled, U-Boot won't generate ACPI tables, but use those provided by QEMU. Signed-off-by: Miao Yan Reviewed-by: Bin Meng Tested-by: Bin Meng diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index f07567c..a995e32 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -358,6 +358,15 @@ config GENERATE_ACPI_TABLE by the operating system. It defines platform-independent interfaces for configuration and power management monitoring. +config QEMU_ACPI_TABLE + bool "Load ACPI table from QEMU fw_cfg interface" + depends on GENERATE_ACPI_TABLE && QEMU + default y + help + By default, U-Boot generates its own ACPI tables. This option, if + enabled, disables U-Boot's version and loads ACPI tables generated + by QEMU. + config GENERATE_SMBIOS_TABLE bool "Generate an SMBIOS (System Management BIOS) table" default y -- cgit v0.10.2 From 81aaa3d9fce5ce9641e5f0c3354da876d859b3b6 Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Wed, 27 Jan 2016 00:56:34 -0800 Subject: x86: Correct spi node alias With recent changes spi node was moved to a place as a subnode under pch, so update the alias to refer to its correct place as well. Signed-off-by: Bin Meng Reviewed-by: Simon Glass diff --git a/arch/x86/dts/bayleybay.dts b/arch/x86/dts/bayleybay.dts index 9bf707b..fbca467 100644 --- a/arch/x86/dts/bayleybay.dts +++ b/arch/x86/dts/bayleybay.dts @@ -21,7 +21,7 @@ aliases { serial0 = &serial; - spi0 = "/spi"; + spi0 = &spi; }; config { @@ -184,7 +184,7 @@ >; }; - spi { + spi: spi { #address-cells = <1>; #size-cells = <0>; compatible = "intel,ich-spi"; diff --git a/arch/x86/dts/broadwell_som-6896.dts b/arch/x86/dts/broadwell_som-6896.dts index 4e9e410..7b2c515 100644 --- a/arch/x86/dts/broadwell_som-6896.dts +++ b/arch/x86/dts/broadwell_som-6896.dts @@ -10,7 +10,7 @@ compatible = "advantech,som-6896", "intel,broadwell"; aliases { - spi0 = "/spi"; + spi0 = &spi; }; config { @@ -34,7 +34,7 @@ reg = <0x0000f800 0 0 0 0>; compatible = "intel,pch9"; - spi { + spi: spi { #address-cells = <1>; #size-cells = <0>; compatible = "intel,ich-spi"; diff --git a/arch/x86/dts/chromebook_link.dts b/arch/x86/dts/chromebook_link.dts index d148d6e..5807203 100644 --- a/arch/x86/dts/chromebook_link.dts +++ b/arch/x86/dts/chromebook_link.dts @@ -11,7 +11,7 @@ compatible = "google,link", "intel,celeron-ivybridge"; aliases { - spi0 = "/pci/pch/spi"; + spi0 = &spi; usb0 = &usb_0; usb1 = &usb_1; }; @@ -252,7 +252,7 @@ /* Enable EC SMI source */ intel,alt-gp-smi-enable = <0x0100>; - spi { + spi: spi { #address-cells = <1>; #size-cells = <0>; compatible = "intel,ich-spi"; diff --git a/arch/x86/dts/chromebox_panther.dts b/arch/x86/dts/chromebox_panther.dts index 2302701..48f0c77 100644 --- a/arch/x86/dts/chromebox_panther.dts +++ b/arch/x86/dts/chromebox_panther.dts @@ -10,7 +10,7 @@ compatible = "google,panther", "intel,haswell"; aliases { - spi0 = "/spi"; + spi0 = &spi; }; config { @@ -56,7 +56,7 @@ reg = <0x0000f800 0 0 0 0>; compatible = "intel,pch9"; - spi { + spi: spi { #address-cells = <1>; #size-cells = <0>; compatible = "intel,ich-spi"; diff --git a/arch/x86/dts/crownbay.dts b/arch/x86/dts/crownbay.dts index d6dd0b4..47fab0f 100644 --- a/arch/x86/dts/crownbay.dts +++ b/arch/x86/dts/crownbay.dts @@ -19,7 +19,7 @@ compatible = "intel,crownbay", "intel,queensbay"; aliases { - spi0 = "/spi"; + spi0 = &spi; }; config { @@ -227,7 +227,7 @@ >; }; - spi { + spi: spi { #address-cells = <1>; #size-cells = <0>; compatible = "intel,ich-spi"; diff --git a/arch/x86/dts/galileo.dts b/arch/x86/dts/galileo.dts index a2f5a1f..dd75fc4 100644 --- a/arch/x86/dts/galileo.dts +++ b/arch/x86/dts/galileo.dts @@ -18,7 +18,7 @@ compatible = "intel,galileo", "intel,quark"; aliases { - spi0 = "/spi"; + spi0 = &spi; }; config { @@ -115,7 +115,7 @@ >; }; - spi { + spi: spi { #address-cells = <1>; #size-cells = <0>; compatible = "intel,ich-spi"; diff --git a/arch/x86/dts/minnowmax.dts b/arch/x86/dts/minnowmax.dts index e7ef7c9..7afdf6c 100644 --- a/arch/x86/dts/minnowmax.dts +++ b/arch/x86/dts/minnowmax.dts @@ -20,7 +20,7 @@ aliases { serial0 = &serial; - spi0 = "/spi"; + spi0 = &spi; }; config { @@ -218,7 +218,7 @@ >; }; - spi { + spi: spi { #address-cells = <1>; #size-cells = <0>; compatible = "intel,ich-spi"; -- cgit v0.10.2