+// SPDX-License-Identifier: GPL-2.0+
/*
* 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 <dm.h>
#include <ec_commands.h>
#include <errno.h>
#include <hash.h>
* 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
struct ec_keymatrix_entry *matrix; /* the key matrix info */
uint8_t keyscan[KEYBOARD_COLS];
bool recovery_req;
-} s_state, *state;
+} s_state, *g_state;
/**
* cros_ec_read_state() - read the sandbox EC state from the state file
*/
static int cros_ec_write_state(void *blob, int node)
{
- struct ec_state *ec = &s_state;
+ struct ec_state *ec = g_state;
/* We are guaranteed enough space to write basic properties */
fdt_setprop_u32(blob, node, "current-image", ec->current_image);
* 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)
+static int keyscan_read_fdt_matrix(struct ec_state *ec, ofnode node)
{
const u32 *cell;
int upto;
int len;
- cell = fdt_getprop(blob, node, "linux,keymap", &len);
+ cell = ofnode_get_property(node, "linux,keymap", &len);
ec->matrix_count = len / 4;
ec->matrix = calloc(ec->matrix_count, sizeof(*ec->matrix));
if (!ec->matrix) {
struct fmap_entry *entry;
int ret, size;
- entry = &state->ec_config.region[EC_FLASH_REGION_RW];
+ entry = &ec->ec_config.region[EC_FLASH_REGION_RW];
switch (req->cmd) {
case EC_VBOOT_HASH_RECALC:
case EC_FLASH_REGION_RO:
case EC_FLASH_REGION_RW:
case EC_FLASH_REGION_WP_RO:
- entry = &state->ec_config.region[req->region];
+ entry = &ec->ec_config.region[req->region];
resp->offset = entry->offset;
resp->size = entry->length;
len = sizeof(*resp);
case EC_CMD_MKBP_STATE:
len = cros_ec_keyscan(ec, resp_data);
break;
+ case EC_CMD_ENTERING_MODE:
+ len = 0;
+ 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)
+int cros_ec_sandbox_packet(struct udevice *udev, int out_bytes, int in_bytes)
{
+ struct cros_ec_dev *dev = dev_get_uclass_priv(udev);
+ struct ec_state *ec = dev_get_priv(dev->dev);
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);
+ len = process_cmd(ec, req_hdr, req_data, resp_hdr, resp_data);
if (len < 0)
return 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;
+ struct ec_state *ec = dev_get_priv(dev->dev);
ulong start;
printf("Press keys for EC to detect on reset (ESC=recovery)...");
}
}
-/**
- * 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)
+int cros_ec_probe(struct udevice *dev)
{
- struct ec_state *ec = &s_state;
- int node;
+ struct ec_state *ec = dev->priv;
+ struct cros_ec_dev *cdev = dev->uclass_priv;
+ struct udevice *keyb_dev;
+ ofnode node;
int err;
- state = &s_state;
- err = cros_ec_decode_ec_flash(blob, &ec->ec_config);
- if (err)
+ memcpy(ec, &s_state, sizeof(*ec));
+ err = cros_ec_decode_ec_flash(dev, &ec->ec_config);
+ if (err) {
+ debug("%s: Cannot device EC flash\n", __func__);
return err;
+ }
- node = fdtdec_next_compatible(blob, 0, COMPAT_GOOGLE_CROS_EC_KEYB);
- if (node < 0) {
+ node = ofnode_null();
+ for (device_find_first_child(dev, &keyb_dev);
+ keyb_dev;
+ device_find_next_child(&keyb_dev)) {
+ if (device_get_uclass_id(keyb_dev) == UCLASS_KEYBOARD) {
+ node = dev_ofnode(keyb_dev);
+ break;
+ }
+ }
+ if (!ofnode_valid(node)) {
debug("%s: No cros_ec keyboard found\n", __func__);
- } else if (keyscan_read_fdt_matrix(ec, blob, node)) {
+ } else if (keyscan_read_fdt_matrix(ec, node)) {
debug("%s: Could not read key matrix\n", __func__);
return -1;
}
return -ENOMEM;
}
- return 0;
+ cdev->dev = dev;
+ g_state = ec;
+ return cros_ec_register(dev);
}
+
+struct dm_cros_ec_ops cros_ec_ops = {
+ .packet = cros_ec_sandbox_packet,
+};
+
+static const struct udevice_id cros_ec_ids[] = {
+ { .compatible = "google,cros-ec-sandbox" },
+ { }
+};
+
+U_BOOT_DRIVER(cros_ec_sandbox) = {
+ .name = "cros_ec_sandbox",
+ .id = UCLASS_CROS_EC,
+ .of_match = cros_ec_ids,
+ .probe = cros_ec_probe,
+ .priv_auto_alloc_size = sizeof(struct ec_state),
+ .ops = &cros_ec_ops,
+};
projects / u-boot / blobdiff