1 files changed, 0 insertions, 559 deletions

diff --git a/qemu/roms/u-boot/drivers/misc/cros_ec_sandbox.c b/qemu/roms/u-boot/drivers/misc/cros_ec_sandbox.c
deleted file mode 100644
index 4bb1d60e5..000000000
--- a/qemu/roms/u-boot/drivers/misc/cros_ec_sandbox.c
+++ /dev/null
@@ -1,559 +0,0 @@
-/*
- * Chromium OS cros_ec driver - sandbox emulation
- *
- * Copyright (c) 2013 The Chromium OS Authors.
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <cros_ec.h>
-#include <ec_commands.h>
-#include <errno.h>
-#include <hash.h>
-#include <malloc.h>
-#include <os.h>
-#include <sha256.h>
-#include <spi.h>
-#include <asm/state.h>
-#include <asm/sdl.h>
-#include <linux/input.h>
-
-/*
- * Ultimately it shold be possible to connect an Chrome OS EC emulation
- * to U-Boot and remove all of this code. But this provides a test
- * environment for bringing up chromeos_sandbox and demonstrating its
- * utility.
- *
- * This emulation includes the following:
- *
- * 1. Emulation of the keyboard, by converting keypresses received from SDL
- * into key scan data, passed back from the EC as key scan messages. The
- * key layout is read from the device tree.
- *
- * 2. Emulation of vboot context - so this can be read/written as required.
- *
- * 3. Save/restore of EC state, so that the vboot context, flash memory
- * contents and current image can be preserved across boots. This is important
- * since the EC is supposed to continue running even if the AP resets.
- *
- * 4. Some event support, in particular allowing Escape to be pressed on boot
- * to enter recovery mode. The EC passes this to U-Boot through the normal
- * event message.
- *
- * 5. Flash read/write/erase support, so that software sync works. The
- * protect messages are supported but no protection is implemented.
- *
- * 6. Hashing of the EC image, again to support software sync.
- *
- * Other features can be added, although a better path is probably to link
- * the EC image in with U-Boot (Vic has demonstrated a prototype for this).
- */
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#define KEYBOARD_ROWS	8
-#define KEYBOARD_COLS	13
-
-/* A single entry of the key matrix */
-struct ec_keymatrix_entry {
-	int row;	/* key matrix row */
-	int col;	/* key matrix column */
-	int keycode;	/* corresponding linux key code */
-};
-
-/**
- * struct ec_state - Information about the EC state
- *
- * @vbnv_context: Vboot context data stored by EC
- * @ec_config: FDT config information about the EC (e.g. flashmap)
- * @flash_data: Contents of flash memory
- * @flash_data_len: Size of flash memory
- * @current_image: Current image the EC is running
- * @matrix_count: Number of keys to decode in matrix
- * @matrix: Information about keyboard matrix
- * @keyscan: Current keyscan information (bit set for each row/column pressed)
- * @recovery_req: Keyboard recovery requested
- */
-struct ec_state {
-	uint8_t vbnv_context[EC_VBNV_BLOCK_SIZE];
-	struct fdt_cros_ec ec_config;
-	uint8_t *flash_data;
-	int flash_data_len;
-	enum ec_current_image current_image;
-	int matrix_count;
-	struct ec_keymatrix_entry *matrix;	/* the key matrix info */
-	uint8_t keyscan[KEYBOARD_COLS];
-	bool recovery_req;
-} s_state, *state;
-
-/**
- * cros_ec_read_state() - read the sandbox EC state from the state file
- *
- * If data is available, then blob and node will provide access to it. If
- * not this function sets up an empty EC.
- *
- * @param blob: Pointer to device tree blob, or NULL if no data to read
- * @param node: Node offset to read from
- */
-static int cros_ec_read_state(const void *blob, int node)
-{
-	struct ec_state *ec = &s_state;
-	const char *prop;
-	int len;
-
-	/* Set everything to defaults */
-	ec->current_image = EC_IMAGE_RO;
-	if (!blob)
-		return 0;
-
-	/* Read the data if available */
-	ec->current_image = fdtdec_get_int(blob, node, "current-image",
-					   EC_IMAGE_RO);
-	prop = fdt_getprop(blob, node, "vbnv-context", &len);
-	if (prop && len == sizeof(ec->vbnv_context))
-		memcpy(ec->vbnv_context, prop, len);
-
-	prop = fdt_getprop(blob, node, "flash-data", &len);
-	if (prop) {
-		ec->flash_data_len = len;
-		ec->flash_data = os_malloc(len);
-		if (!ec->flash_data)
-			return -ENOMEM;
-		memcpy(ec->flash_data, prop, len);
-		debug("%s: Loaded EC flash data size %#x\n", __func__, len);
-	}
-
-	return 0;
-}
-
-/**
- * cros_ec_write_state() - Write out our state to the state file
- *
- * The caller will ensure that there is a node ready for the state. The node
- * may already contain the old state, in which case it is overridden.
- *
- * @param blob: Device tree blob holding state
- * @param node: Node to write our state into
- */
-static int cros_ec_write_state(void *blob, int node)
-{
-	struct ec_state *ec = &s_state;
-
-	/* We are guaranteed enough space to write basic properties */
-	fdt_setprop_u32(blob, node, "current-image", ec->current_image);
-	fdt_setprop(blob, node, "vbnv-context", ec->vbnv_context,
-		    sizeof(ec->vbnv_context));
-	return state_setprop(node, "flash-data", ec->flash_data,
-			     ec->ec_config.flash.length);
-}
-
-SANDBOX_STATE_IO(cros_ec, "google,cros-ec", cros_ec_read_state,
-		 cros_ec_write_state);
-
-/**
- * Return the number of bytes used in the specified image.
- *
- * This is the actual size of code+data in the image, as opposed to the
- * amount of space reserved in flash for that image. This code is similar to
- * that used by the real EC code base.
- *
- * @param ec	Current emulated EC state
- * @param entry	Flash map entry containing the image to check
- * @return actual image size in bytes, 0 if the image contains no content or
- * error.
- */
-static int get_image_used(struct ec_state *ec, struct fmap_entry *entry)
-{
-	int size;
-
-	/*
-	 * Scan backwards looking for 0xea byte, which is by definition the
-	 * last byte of the image.  See ec.lds.S for how this is inserted at
-	 * the end of the image.
-	 */
-	for (size = entry->length - 1;
-	     size > 0 && ec->flash_data[entry->offset + size] != 0xea;
-	     size--)
-		;
-
-	return size ? size + 1 : 0;  /* 0xea byte IS part of the image */
-}
-
-/**
- * Read the key matrix from the device tree
- *
- * Keymap entries in the fdt take the form of 0xRRCCKKKK where
- * RR=Row CC=Column KKKK=Key Code
- *
- * @param ec	Current emulated EC state
- * @param blob	Device tree blob containing keyscan information
- * @param node	Keyboard node of device tree containing keyscan information
- * @return 0 if ok, -1 on error
- */
-static int keyscan_read_fdt_matrix(struct ec_state *ec, const void *blob,
-				   int node)
-{
-	const u32 *cell;
-	int upto;
-	int len;
-
-	cell = fdt_getprop(blob, node, "linux,keymap", &len);
-	ec->matrix_count = len / 4;
-	ec->matrix = calloc(ec->matrix_count, sizeof(*ec->matrix));
-	if (!ec->matrix) {
-		debug("%s: Out of memory for key matrix\n", __func__);
-		return -1;
-	}
-
-	/* Now read the data */
-	for (upto = 0; upto < ec->matrix_count; upto++) {
-		struct ec_keymatrix_entry *matrix = &ec->matrix[upto];
-		u32 word;
-
-		word = fdt32_to_cpu(*cell++);
-		matrix->row = word >> 24;
-		matrix->col = (word >> 16) & 0xff;
-		matrix->keycode = word & 0xffff;
-
-		/* Hard-code some sanity limits for now */
-		if (matrix->row >= KEYBOARD_ROWS ||
-		    matrix->col >= KEYBOARD_COLS) {
-			debug("%s: Matrix pos out of range (%d,%d)\n",
-			      __func__, matrix->row, matrix->col);
-			return -1;
-		}
-	}
-
-	if (upto != ec->matrix_count) {
-		debug("%s: Read mismatch from key matrix\n", __func__);
-		return -1;
-	}
-
-	return 0;
-}
-
-/**
- * Return the next keyscan message contents
- *
- * @param ec	Current emulated EC state
- * @param scan	Place to put keyscan bytes for the keyscan message (must hold
- *		enough space for a full keyscan)
- * @return number of bytes of valid scan data
- */
-static int cros_ec_keyscan(struct ec_state *ec, uint8_t *scan)
-{
-	const struct ec_keymatrix_entry *matrix;
-	int bytes = KEYBOARD_COLS;
-	int key[8];	/* allow up to 8 keys to be pressed at once */
-	int count;
-	int i;
-
-	memset(ec->keyscan, '\0', bytes);
-	count = sandbox_sdl_scan_keys(key, ARRAY_SIZE(key));
-
-	/* Look up keycode in matrix */
-	for (i = 0, matrix = ec->matrix; i < ec->matrix_count; i++, matrix++) {
-		bool found;
-		int j;
-
-		for (found = false, j = 0; j < count; j++) {
-			if (matrix->keycode == key[j])
-				found = true;
-		}
-
-		if (found) {
-			debug("%d: %d,%d\n", matrix->keycode, matrix->row,
-			      matrix->col);
-			ec->keyscan[matrix->col] |= 1 << matrix->row;
-		}
-	}
-
-	memcpy(scan, ec->keyscan, bytes);
-	return bytes;
-}
-
-/**
- * Process an emulated EC command
- *
- * @param ec		Current emulated EC state
- * @param req_hdr	Pointer to request header
- * @param req_data	Pointer to body of request
- * @param resp_hdr	Pointer to place to put response header
- * @param resp_data	Pointer to place to put response data, if any
- * @return length of response data, or 0 for no response data, or -1 on error
- */
-static int process_cmd(struct ec_state *ec,
-		       struct ec_host_request *req_hdr, const void *req_data,
-		       struct ec_host_response *resp_hdr, void *resp_data)
-{
-	int len;
-
-	/* TODO(sjg@chromium.org): Check checksums */
-	debug("EC command %#0x\n", req_hdr->command);
-
-	switch (req_hdr->command) {
-	case EC_CMD_HELLO: {
-		const struct ec_params_hello *req = req_data;
-		struct ec_response_hello *resp = resp_data;
-
-		resp->out_data = req->in_data + 0x01020304;
-		len = sizeof(*resp);
-		break;
-	}
-	case EC_CMD_GET_VERSION: {
-		struct ec_response_get_version *resp = resp_data;
-
-		strcpy(resp->version_string_ro, "sandbox_ro");
-		strcpy(resp->version_string_rw, "sandbox_rw");
-		resp->current_image = ec->current_image;
-		debug("Current image %d\n", resp->current_image);
-		len = sizeof(*resp);
-		break;
-	}
-	case EC_CMD_VBNV_CONTEXT: {
-		const struct ec_params_vbnvcontext *req = req_data;
-		struct ec_response_vbnvcontext *resp = resp_data;
-
-		switch (req->op) {
-		case EC_VBNV_CONTEXT_OP_READ:
-			memcpy(resp->block, ec->vbnv_context,
-			       sizeof(resp->block));
-			len = sizeof(*resp);
-			break;
-		case EC_VBNV_CONTEXT_OP_WRITE:
-			memcpy(ec->vbnv_context, resp->block,
-			       sizeof(resp->block));
-			len = 0;
-			break;
-		default:
-			printf("   ** Unknown vbnv_context command %#02x\n",
-			       req->op);
-			return -1;
-		}
-		break;
-	}
-	case EC_CMD_REBOOT_EC: {
-		const struct ec_params_reboot_ec *req = req_data;
-
-		printf("Request reboot type %d\n", req->cmd);
-		switch (req->cmd) {
-		case EC_REBOOT_DISABLE_JUMP:
-			len = 0;
-			break;
-		case EC_REBOOT_JUMP_RW:
-			ec->current_image = EC_IMAGE_RW;
-			len = 0;
-			break;
-		default:
-			puts("   ** Unknown type");
-			return -1;
-		}
-		break;
-	}
-	case EC_CMD_HOST_EVENT_GET_B: {
-		struct ec_response_host_event_mask *resp = resp_data;
-
-		resp->mask = 0;
-		if (ec->recovery_req) {
-			resp->mask |= EC_HOST_EVENT_MASK(
-					EC_HOST_EVENT_KEYBOARD_RECOVERY);
-		}
-
-		len = sizeof(*resp);
-		break;
-	}
-	case EC_CMD_VBOOT_HASH: {
-		const struct ec_params_vboot_hash *req = req_data;
-		struct ec_response_vboot_hash *resp = resp_data;
-		struct fmap_entry *entry;
-		int ret, size;
-
-		entry = &state->ec_config.region[EC_FLASH_REGION_RW];
-
-		switch (req->cmd) {
-		case EC_VBOOT_HASH_RECALC:
-		case EC_VBOOT_HASH_GET:
-			size = SHA256_SUM_LEN;
-			len = get_image_used(ec, entry);
-			ret = hash_block("sha256",
-					 ec->flash_data + entry->offset,
-					 len, resp->hash_digest, &size);
-			if (ret) {
-				printf("   ** hash_block() failed\n");
-				return -1;
-			}
-			resp->status = EC_VBOOT_HASH_STATUS_DONE;
-			resp->hash_type = EC_VBOOT_HASH_TYPE_SHA256;
-			resp->digest_size = size;
-			resp->reserved0 = 0;
-			resp->offset = entry->offset;
-			resp->size = len;
-			len = sizeof(*resp);
-			break;
-		default:
-			printf("   ** EC_CMD_VBOOT_HASH: Unknown command %d\n",
-			       req->cmd);
-			return -1;
-		}
-		break;
-	}
-	case EC_CMD_FLASH_PROTECT: {
-		const struct ec_params_flash_protect *req = req_data;
-		struct ec_response_flash_protect *resp = resp_data;
-		uint32_t expect = EC_FLASH_PROTECT_ALL_NOW |
-				EC_FLASH_PROTECT_ALL_AT_BOOT;
-
-		printf("mask=%#x, flags=%#x\n", req->mask, req->flags);
-		if (req->flags == expect || req->flags == 0) {
-			resp->flags = req->flags ? EC_FLASH_PROTECT_ALL_NOW :
-								0;
-			resp->valid_flags = EC_FLASH_PROTECT_ALL_NOW;
-			resp->writable_flags = 0;
-			len = sizeof(*resp);
-		} else {
-			puts("   ** unexpected flash protect request\n");
-			return -1;
-		}
-		break;
-	}
-	case EC_CMD_FLASH_REGION_INFO: {
-		const struct ec_params_flash_region_info *req = req_data;
-		struct ec_response_flash_region_info *resp = resp_data;
-		struct fmap_entry *entry;
-
-		switch (req->region) {
-		case EC_FLASH_REGION_RO:
-		case EC_FLASH_REGION_RW:
-		case EC_FLASH_REGION_WP_RO:
-			entry = &state->ec_config.region[req->region];
-			resp->offset = entry->offset;
-			resp->size = entry->length;
-			len = sizeof(*resp);
-			printf("EC flash region %d: offset=%#x, size=%#x\n",
-			       req->region, resp->offset, resp->size);
-			break;
-		default:
-			printf("** Unknown flash region %d\n", req->region);
-			return -1;
-		}
-		break;
-	}
-	case EC_CMD_FLASH_ERASE: {
-		const struct ec_params_flash_erase *req = req_data;
-
-		memset(ec->flash_data + req->offset,
-		       ec->ec_config.flash_erase_value,
-		       req->size);
-		len = 0;
-		break;
-	}
-	case EC_CMD_FLASH_WRITE: {
-		const struct ec_params_flash_write *req = req_data;
-
-		memcpy(ec->flash_data + req->offset, req + 1, req->size);
-		len = 0;
-		break;
-	}
-	case EC_CMD_MKBP_STATE:
-		len = cros_ec_keyscan(ec, resp_data);
-		break;
-	default:
-		printf("   ** Unknown EC command %#02x\n", req_hdr->command);
-		return -1;
-	}
-
-	return len;
-}
-
-int cros_ec_sandbox_packet(struct cros_ec_dev *dev, int out_bytes,
-			   int in_bytes)
-{
-	struct ec_host_request *req_hdr = (struct ec_host_request *)dev->dout;
-	const void *req_data = req_hdr + 1;
-	struct ec_host_response *resp_hdr = (struct ec_host_response *)dev->din;
-	void *resp_data = resp_hdr + 1;
-	int len;
-
-	len = process_cmd(&s_state, req_hdr, req_data, resp_hdr, resp_data);
-	if (len < 0)
-		return len;
-
-	resp_hdr->struct_version = 3;
-	resp_hdr->result = EC_RES_SUCCESS;
-	resp_hdr->data_len = len;
-	resp_hdr->reserved = 0;
-	len += sizeof(*resp_hdr);
-	resp_hdr->checksum = 0;
-	resp_hdr->checksum = (uint8_t)
-		-cros_ec_calc_checksum((const uint8_t *)resp_hdr, len);
-
-	return in_bytes;
-}
-
-int cros_ec_sandbox_decode_fdt(struct cros_ec_dev *dev, const void *blob)
-{
-	return 0;
-}
-
-void cros_ec_check_keyboard(struct cros_ec_dev *dev)
-{
-	struct ec_state *ec = &s_state;
-	ulong start;
-
-	printf("Press keys for EC to detect on reset (ESC=recovery)...");
-	start = get_timer(0);
-	while (get_timer(start) < 1000)
-		;
-	putc('\n');
-	if (!sandbox_sdl_key_pressed(KEY_ESC)) {
-		ec->recovery_req = true;
-		printf("   - EC requests recovery\n");
-	}
-}
-
-/**
- * Initialize sandbox EC emulation.
- *
- * @param dev		CROS_EC device
- * @param blob		Device tree blob
- * @return 0 if ok, -1 on error
- */
-int cros_ec_sandbox_init(struct cros_ec_dev *dev, const void *blob)
-{
-	struct ec_state *ec = &s_state;
-	int node;
-	int err;
-
-	state = &s_state;
-	err = cros_ec_decode_ec_flash(blob, &ec->ec_config);
-	if (err)
-		return err;
-
-	node = fdtdec_next_compatible(blob, 0, COMPAT_GOOGLE_CROS_EC_KEYB);
-	if (node < 0) {
-		debug("%s: No cros_ec keyboard found\n", __func__);
-	} else if (keyscan_read_fdt_matrix(ec, blob, node)) {
-		debug("%s: Could not read key matrix\n", __func__);
-		return -1;
-	}
-
-	/* If we loaded EC data, check that the length matches */
-	if (ec->flash_data &&
-	    ec->flash_data_len != ec->ec_config.flash.length) {
-		printf("EC data length is %x, expected %x, discarding data\n",
-		       ec->flash_data_len, ec->ec_config.flash.length);
-		os_free(ec->flash_data);
-		ec->flash_data = NULL;
-	}
-
-	/* Otherwise allocate the memory */
-	if (!ec->flash_data) {
-		ec->flash_data_len = ec->ec_config.flash.length;
-		ec->flash_data = os_malloc(ec->flash_data_len);
-		if (!ec->flash_data)
-			return -ENOMEM;
-	}
-
-	return 0;
-}