[flashrom-gerrit] Change in flashrom[master]: board_enable.c: Add ME unlock function for TUXEDO laptops

[Michał Żygowski (Code Review)]

Michał Żygowski has uploaded this change for review. ( https://review.coreboot.org/c/flashrom/+/56023 )

Change subject: board_enable.c: Add ME unlock function for TUXEDO laptops
......................................................................

board_enable.c: Add ME unlock function for TUXEDO laptops

Signed-off-by: Michał Żygowski 
Change-Id: I6bf1c40900aa674e3ea4f6add12dae8b73759fbb
---
M board_enable.c
M flashrom.8.tmpl
2 files changed, 39 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/23/56023/1

diff --git a/board_enable.c b/board_enable.c
index 9cf0103..6780786 100644
--- a/board_enable.c
+++ b/board_enable.c
@@ -2306,6 +2306,37 @@
    return 0;
 }

+static int tuxedo_unlock_me(void)
+{
+	uint8_t data;
+	char *arg;
+
+	arg = extract_programmer_param("unlockmeonly");
+	if (!arg && strcmp(arg, "yes"))
+		return 0;
+
+	free(arg);
+
+	if (!ec_write_cmd(EC_CONTROL, 0xc2)) {
+		msg_perr("Failed to start ME unlocking.\n");
+		return -1;
+	}
+
+	if (!ec_read_reg(0xda, &data)) {
+		msg_perr("Failed to read ME state register\n");
+		return -1;
+	}
+
+	if (!ec_write_reg(0xda, data | 0x08)) {
+		msg_perr("Failed to update ME state register\n");
+		return -1;
+	}
+
+	msg_perr("ME has been unlocked. Power off and then power on to take effect.\n");
+
+	return 0;
+}
+
 #endif

/*
@@ -2527,6 +2558,8 @@
    {0x1106, 0x0259, 0x1106, 0xAA07,  0x1106, 0x3227, 0x1106, 0xAA07, NULL,         NULL, NULL,           P3, "VIA",         "EPIA EK",               0,   NT, via_vt823x_gpio9_raise},
    {0x1106, 0x3177, 0x1106, 0xAA01,  0x1106, 0x3123, 0x1106, 0xAA01, NULL,         NULL, NULL,           P3, "VIA",         "EPIA M/MII/...",        0,   OK, via_vt823x_gpio15_raise},
    {0x1106, 0x0259, 0x1106, 0x3227,  0x1106, 0x3065, 0x1106, 0x3149, NULL,         NULL, NULL,           P3, "VIA",         "EPIA-N/NL",             0,   OK, via_vt823x_gpio9_raise},
+	{0x8086, 0xa082, 0x1558, 0x14a1,  0x8086, 0x9a14, 0x1558, 0x14a1, NULL,         NULL, NULL,           P3, "TUXEDO",      "InfinityBook S 14 Gen6", 0,  OK, tuxedo_unlock_me},
+	{0x8086, 0xa082, 0x1558, 0x14a1,  0x8086, 0x9a14, 0x1558, 0x14a1, NULL,         NULL, NULL,           P3, "TUXEDO",      "InfinityBook S 15 Gen6", 0,  OK, tuxedo_unlock_me},
 #endif
    {     0,      0,      0,      0,       0,      0,      0,      0, NULL,         NULL, NULL,           P3, NULL,          NULL,                    0,   NT, NULL}, /* end marker */
 };
diff --git a/flashrom.8.tmpl b/flashrom.8.tmpl
index 228e17b..ccacd86 100644
--- a/flashrom.8.tmpl
+++ b/flashrom.8.tmpl
@@ -645,6 +645,12 @@
 .B "  flashrom -p internal:laptop=this_is_not_a_laptop"
 .sp
 to tell flashrom (at your own risk) that it is not running on a laptop.
+.sp
+Parameter
+.B unlockmeonly
+can be used to unlock updating flash on Clevo/Tuxedo laptops.  Syntax is
+.sp
+.B "  flashrom -p internal:unlockmeonly=yes"
 .SS
 .BR "dummy " programmer
 .IP