x86: Add a command to display coreboot sysinfo

This information is interesting to look at and can be important for
debugging and inspection. Add a command to display it in a helpful
format.

Signed-off-by: Simon Glass <sjg@chromium.org>

3 files changed, 404 insertions, 0 deletions

diff --git a/cmd/Kconfig b/cmd/Kconfig
index e4bb1d4c4a7..8ab34f3798d 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -2251,6 +2251,15 @@ config CMD_BEDBUG
 	  for some PowerPC processors. For details please see the
 	  documentation in doc/README.bedbug.
 
+config CMD_CBSYSINFO
+	bool "cbsysinfo"
+	depends on X86
+	default y if SYS_COREBOOT
+	help
+	  This provides information about the coreboot sysinfo table stored in
+	  memory by coreboot before jumping to U-Boot. It can be useful for
+	  debugging the beaaviour of coreboot or U-Boot.
+
 config CMD_DIAG
 	bool "diag - Board diagnostics"
 	help
diff --git a/cmd/x86/Makefile b/cmd/x86/Makefile
index 144b1cf5abe..5f82204c87e 100644
--- a/cmd/x86/Makefile
+++ b/cmd/x86/Makefile
@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0+
 
+obj-$(CONFIG_CMD_CBSYSINFO) += cbsysinfo.o
 obj-y += mtrr.o
 obj-$(CONFIG_CMD_EXCEPTION) += exception.o
 obj-$(CONFIG_USE_HOB) += hob.o
diff --git a/cmd/x86/cbsysinfo.c b/cmd/x86/cbsysinfo.c
new file mode 100644
index 00000000000..a0db0ad364e
--- /dev/null
+++ b/cmd/x86/cbsysinfo.c
@@ -0,0 +1,394 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2021 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <asm/cb_sysinfo.h>
+#include <command.h>
+#include <console.h>
+#include <asm/global_data.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static void cbprompt(const char *name)
+{
+	for (; *name == '>'; name++)
+		puts("   ");
+	printf("%-12s: ", name);
+}
+
+static void print_dec(const char *name, int value)
+{
+	cbprompt(name);
+	printf(value > 9 ? "0d%d\n" : "%d\n", value);
+}
+
+static void print_hex(const char *name, int value)
+{
+	cbprompt(name);
+	printf("%x\n", value);
+}
+
+static void print_addr(const char *name, ulong value)
+{
+	cbprompt(name);
+	printf("%08lx\n", value);
+}
+
+static void print_addr64(const char *name, u64 value)
+{
+	cbprompt(name);
+	printf("%16llx\n", value);
+}
+
+static void print_ptr(const char *name, const void *value)
+{
+	cbprompt(name);
+	printf("%p\n", value);
+}
+
+static void print_str(const char *name, const char *value)
+{
+	if (value) {
+		cbprompt(name);
+		printf("%s\n", value);
+	}
+}
+
+static void print_idx(const char *name, uint idx, const u8 *strings)
+{
+	const char *ptr;
+
+	cbprompt(name);
+	ptr = (char *)strings + idx;
+	printf("%d: %s\n", idx, ptr ? ptr : "(unknown)");
+}
+
+static const char *const cb_mem_name[] = {
+	NULL,
+	"ram",
+	"reserved",
+	"acpi",
+	"nvs",
+	"unusable",
+	"vendor",
+};
+
+static const char *get_mem_name(int tag)
+{
+	if (tag >= CB_MEM_RAM && tag <= CB_MEM_VENDOR_RSVD)
+		return cb_mem_name[tag];
+
+	if (tag == CB_MEM_TABLE)
+		return "table";
+
+	return "(unknown)";
+}
+
+static const struct timestamp_id_to_name {
+	uint id;
+	const char *name;
+} timestamp_ids[] = {
+	/* Marker to report base_time */
+	{ 0,			"1st timestamp" },
+	{ TS_START_ROMSTAGE,	"start of romstage" },
+	{ TS_BEFORE_INITRAM,	"before ram initialization" },
+	{ TS_AFTER_INITRAM,	"after ram initialization" },
+	{ TS_END_ROMSTAGE,	"end of romstage" },
+	{ TS_START_VBOOT,	"start of verified boot" },
+	{ TS_END_VBOOT,		"end of verified boot" },
+	{ TS_START_COPYRAM,	"starting to load ramstage" },
+	{ TS_END_COPYRAM,	"finished loading ramstage" },
+	{ TS_START_RAMSTAGE,	"start of ramstage" },
+	{ TS_START_BOOTBLOCK,	"start of bootblock" },
+	{ TS_END_BOOTBLOCK,	"end of bootblock" },
+	{ TS_START_COPYROM,	"starting to load romstage" },
+	{ TS_END_COPYROM,	"finished loading romstage" },
+	{ TS_START_ULZMA,	"starting LZMA decompress (ignore for x86)" },
+	{ TS_END_ULZMA,		"finished LZMA decompress (ignore for x86)" },
+	{ TS_START_ULZ4F,	"starting LZ4 decompress (ignore for x86)" },
+	{ TS_END_ULZ4F,		"finished LZ4 decompress (ignore for x86)" },
+	{ TS_DEVICE_ENUMERATE,	"device enumeration" },
+	{ TS_DEVICE_CONFIGURE,	"device configuration" },
+	{ TS_DEVICE_ENABLE,	"device enable" },
+	{ TS_DEVICE_INITIALIZE,	"device initialization" },
+	{ TS_DEVICE_DONE,	"device setup done" },
+	{ TS_CBMEM_POST,	"cbmem post" },
+	{ TS_WRITE_TABLES,	"write tables" },
+	{ TS_FINALIZE_CHIPS,	"finalize chips" },
+	{ TS_LOAD_PAYLOAD,	"load payload" },
+	{ TS_ACPI_WAKE_JUMP,	"ACPI wake jump" },
+	{ TS_SELFBOOT_JUMP,	"selfboot jump" },
+
+	{ TS_START_COPYVER,	"starting to load verstage" },
+	{ TS_END_COPYVER,	"finished loading verstage" },
+	{ TS_START_TPMINIT,	"starting to initialize TPM" },
+	{ TS_END_TPMINIT,	"finished TPM initialization" },
+	{ TS_START_VERIFY_SLOT,	"starting to verify keyblock/preamble (RSA)" },
+	{ TS_END_VERIFY_SLOT,	"finished verifying keyblock/preamble (RSA)" },
+	{ TS_START_HASH_BODY,	"starting to verify body (load+SHA2+RSA) " },
+	{ TS_DONE_LOADING,	"finished loading body (ignore for x86)" },
+	{ TS_DONE_HASHING,	"finished calculating body hash (SHA2)" },
+	{ TS_END_HASH_BODY,	"finished verifying body signature (RSA)" },
+
+	{ TS_START_COPYVPD,	"starting to load Chrome OS VPD" },
+	{ TS_END_COPYVPD_RO,	"finished loading Chrome OS VPD (RO)" },
+	{ TS_END_COPYVPD_RW,	"finished loading Chrome OS VPD (RW)" },
+
+	{ TS_U_BOOT_INITTED,	"U-Boot start" },
+	{ TS_RO_PARAMS_INIT,	"RO parameter init" },
+	{ TS_RO_VB_INIT,	"RO vboot init" },
+	{ TS_RO_VB_SELECT_FIRMWARE,		"RO vboot select firmware" },
+	{ TS_RO_VB_SELECT_AND_LOAD_KERNEL,	"RO vboot select&load kernel" },
+	{ TS_RW_VB_SELECT_AND_LOAD_KERNEL,	"RW vboot select&load kernel" },
+	{ TS_VB_SELECT_AND_LOAD_KERNEL,		"vboot select&load kernel" },
+	{ TS_VB_EC_VBOOT_DONE,	"finished EC verification" },
+	{ TS_VB_STORAGE_INIT_DONE, "finished storage device initialization" },
+	{ TS_VB_READ_KERNEL_DONE, "finished reading kernel from disk" },
+	{ TS_VB_VBOOT_DONE,	"finished vboot kernel verification" },
+	{ TS_KERNEL_DECOMPRESSION, "starting kernel decompression/relocation" },
+	{ TS_START_KERNEL,	"jumping to kernel" },
+	{ TS_U_BOOT_START_KERNEL,	"just before jump to kernel" },
+
+	/* Intel ME-related timestamps */
+	{ TS_ME_INFORM_DRAM_WAIT, "waiting for ME acknowledgment of raminit"},
+	{ TS_ME_INFORM_DRAM_DONE, "finished waiting for ME response"},
+
+	/* FSP-related timestamps */
+	{ TS_FSP_MEMORY_INIT_START, "calling FspMemoryInit" },
+	{ TS_FSP_MEMORY_INIT_END, "returning from FspMemoryInit" },
+	{ TS_FSP_TEMP_RAM_EXIT_START, "calling FspTempRamExit" },
+	{ TS_FSP_TEMP_RAM_EXIT_END, "returning from FspTempRamExit" },
+	{ TS_FSP_SILICON_INIT_START, "calling FspSiliconInit" },
+	{ TS_FSP_SILICON_INIT_END, "returning from FspSiliconInit" },
+	{ TS_FSP_BEFORE_ENUMERATE, "calling FspNotify(AfterPciEnumeration)" },
+	{ TS_FSP_AFTER_ENUMERATE,
+		 "returning from FspNotify(AfterPciEnumeration)" },
+	{ TS_FSP_BEFORE_FINALIZE, "calling FspNotify(ReadyToBoot)" },
+	{ TS_FSP_AFTER_FINALIZE, "returning from FspNotify(ReadyToBoot)" },
+	{ TS_FSP_BEFORE_END_OF_FIRMWARE, "calling FspNotify(EndOfFirmware)" },
+	{ TS_FSP_AFTER_END_OF_FIRMWARE,
+		"returning from FspNotify(EndOfFirmware)" },
+};
+
+static const char *timestamp_name(uint32_t id)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(timestamp_ids); i++) {
+		if (timestamp_ids[i].id == id)
+			return timestamp_ids[i].name;
+	}
+
+	return "<unknown>";
+}
+
+static void show_table(struct sysinfo_t *info, bool verbose)
+{
+	struct cb_serial *ser = info->serial;
+	int i;
+
+	printf("Coreboot table at %lx, decoded to %p",
+	       gd->arch.coreboot_table, info);
+	if (info->header)
+		printf(", forwarded to %p\n", info->header);
+	printf("\n");
+
+	print_dec("CPU KHz", info->cpu_khz);
+
+	print_addr("Serial I/O port", info->ser_ioport);
+	print_addr(">base", info->ser_base);
+	print_ptr(">pointer", ser);
+	if (ser) {
+		print_hex(">type", ser->type);
+		print_addr(">base", ser->baseaddr);
+		print_dec(">baud", ser->baud);
+		print_hex(">baud", ser->regwidth);
+		print_dec(">input_hz", ser->input_hertz);
+		print_addr(">PCI addr", ser->uart_pci_addr);
+	}
+
+	print_dec("Mem ranges", info->n_memranges);
+	printf("%12s: %-11s        ||   base        ||   size\n", "id", "type");
+	for (i = 0; i < info->n_memranges; i++) {
+		const struct memrange *mr = &info->memrange[i];
+
+		printf("%12d: %02x:%-8s %016llx %016llx\n", i, mr->type,
+		       get_mem_name(mr->type), mr->base, mr->size);
+	}
+	print_ptr("option_table", info->option_table);
+
+	print_hex("CMOS start", info->cmos_range_start);
+	if (info->cmos_range_start) {
+		print_hex(">CMOS end", info->cmos_range_end);
+		print_hex(">CMOS csum loc", info->cmos_checksum_location);
+	}
+
+	print_hex("VBNV start", info->vbnv_start);
+	print_hex("VBNV size", info->vbnv_size);
+
+	print_str("CB version", info->cb_version);
+	print_str(">Extra", info->extra_version);
+	print_str(">Build", info->build);
+	print_str(">Time", info->compile_time);
+	print_str(">By", info->compile_by);
+	print_str(">Host", info->compile_host);
+	print_str(">Domain", info->compile_domain);
+	print_str(">Compiler", info->compiler);
+	print_str(">Linker", info->linker);
+	print_str(">Assembler", info->assembler);
+
+	print_ptr("Framebuffer", info->framebuffer);
+	if (info->framebuffer) {
+		struct cb_framebuffer *fb = info->framebuffer;
+
+		print_addr64(">Phys addr", fb->physical_address);
+		print_dec(">X res", fb->x_resolution);
+		print_dec(">X res", fb->y_resolution);
+		print_hex(">Bytes / line", fb->bytes_per_line);
+		print_dec(">Bpp", fb->bits_per_pixel);
+		printf("   %-12s  red %d/%d, green %d/%d, blue %d/%d, reserved %d/%d\n",
+		       "pos/size", fb->red_mask_pos, fb->red_mask_size,
+		       fb->green_mask_pos, fb->green_mask_size,
+		       fb->blue_mask_pos, fb->blue_mask_size,
+		       fb->reserved_mask_pos, fb->reserved_mask_size);
+	}
+
+	print_dec("GPIOs", info->num_gpios);
+	printf("%12s: %4s %12s %3s %s\n", "id", "port", "polarity", "val",
+	       "name");
+	for (i = 0; i < info->num_gpios; i++) {
+		const struct cb_gpio *gpio = &info->gpios[i];
+		char portstr[4];
+
+		if (gpio->port == 0xffffffff)
+			strcpy(portstr, "-");
+		else
+			sprintf(portstr, "%x", gpio->port);
+		printf("%12d: %4s %12s %3d %s\n", i, portstr,
+		       gpio->polarity == CB_GPIO_ACTIVE_LOW ? "active-low" :
+		       "active-high", gpio->value, gpio->name);
+	}
+	print_dec("MACs", info->num_macs);
+	for (i = 0; i < info->num_macs; i++) {
+		const struct mac_address *mac = &info->macs[i];
+		int j;
+
+		printf("%12d: ", i);
+		for (j = 0; j < sizeof(mac->mac_addr); j++)
+			printf("%s%02x", j ? ":" : "", mac->mac_addr[j]);
+		printf("\n");
+	}
+	print_str(">Serial #", info->serialno);
+	print_ptr("Multiboot tab", info->mbtable);
+	print_ptr("CB header", info->header);
+	print_ptr("CB mainboard", info->mainboard);
+	if (info->mainboard) {
+		struct cb_mainboard *mb = info->mainboard;
+
+		print_idx(">vendor", mb->vendor_idx, mb->strings);
+		print_idx(">part_number", mb->part_number_idx, mb->strings);
+	}
+	print_ptr("vboot handoff", info->vboot_handoff);
+	print_hex(">size", info->vboot_handoff_size);
+	print_ptr(">vdat addr", info->vdat_addr);
+	print_hex(">size", info->vdat_size);
+
+	print_addr64("SMBIOS", info->smbios_start);
+	print_hex(">size", info->smbios_size);
+	print_hex("ROM MTRR", info->x86_rom_var_mtrr_index);
+
+	print_ptr("Tstamp table", info->tstamp_table);
+	if (verbose && info->tstamp_table) {
+		struct timestamp_table *ts = info->tstamp_table;
+
+		printf("%-12s", "Base_time");
+		print_grouped_ull(ts->base_time, 12);
+		printf("\n");
+		print_dec("Tick MHz", ts->tick_freq_mhz);
+		for (i = 0; i < ts->num_entries; i++) {
+			const struct timestamp_entry *tse;
+
+			tse = &ts->entries[i];
+			printf("   ");
+			print_grouped_ull(tse->entry_stamp, 12);
+			printf("  %s\n", timestamp_name(tse->entry_id));
+		}
+	}
+
+	print_ptr("CBmem cons", info->cbmem_cons);
+	if (info->cbmem_cons) {
+		struct cbmem_console *cons = info->cbmem_cons;
+		int i;
+
+		print_hex("Size", cons->size);
+		print_hex("Cursor", cons->cursor);
+		if (verbose) {
+			for (i = 0; i < cons->cursor; i++) {
+				int ch = cons->body[i];
+
+				putc(ch);
+
+				if (ch == '\n') {
+					/* check for ctrl-c to abort... */
+					if (ctrlc()) {
+						puts("Abort\n");
+						return;
+					}
+					printf("   ");
+				}
+			}
+			printf("\n");
+		}
+	}
+
+	print_ptr("MRC cache", info->mrc_cache);
+	print_ptr("ACPI GNVS", info->acpi_gnvs);
+	print_hex("Board ID", info->board_id);
+	print_hex("RAM code", info->ram_code);
+	print_ptr("WiFi calib", info->wifi_calibration);
+	print_addr64("Ramoops buff", info->ramoops_buffer);
+	print_hex(">size", info->ramoops_buffer_size);
+	print_hex("SF size", info->spi_flash.size);
+	print_hex("SF sector", info->spi_flash.sector_size);
+	print_hex("SF erase cmd", info->spi_flash.erase_cmd);
+
+	print_addr64("FMAP offset", info->fmap_offset);
+	print_addr64("CBFS offset", info->cbfs_offset);
+	print_addr64("CBFS size", info->cbfs_size);
+	print_addr64("Boot media size", info->boot_media_size);
+	print_addr64("MTC start", info->mtc_start);
+	print_hex("MTC size", info->mtc_size);
+
+	print_ptr("Chrome OS VPD", info->chromeos_vpd);
+}
+
+static int do_cbsysinfo(struct cmd_tbl *cmdtp, int flag, int argc,
+			char *const argv[])
+{
+	bool verbose = false;
+
+	if (argc > 1) {
+		if (!strcmp("-v", argv[1]))
+			verbose = true;
+		else
+			return CMD_RET_USAGE;
+	}
+
+	if (!gd->arch.coreboot_table) {
+		printf("No coreboot sysinfo table found\n");
+		return CMD_RET_FAILURE;
+	}
+	show_table(&lib_sysinfo, verbose);
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	cbsysinfo,	2,	1,	do_cbsysinfo,
+	"Show coreboot sysinfo table",
+	"[-v]         Dumps out the contents of the sysinfo table. This only\n"
+	"works if U-Boot is booted from coreboot"
+);