From accce358e8231aca604336df4925d2b643a7e6af Mon Sep 17 00:00:00 2001
From: rushieda <185547947+rushieda@users.noreply.github.com>
Date: Wed, 21 May 2025 12:04:55 +0300
Subject: [PATCH] Fix the Password "Disabled by Jumper" error on Dimension XPS
 Pxxx and Pxxxa/Mxxxa

---
 src/device/kbc_at.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/device/kbc_at.c b/src/device/kbc_at.c
index 7413b45cf..60ca29fc1 100644
--- a/src/device/kbc_at.c
+++ b/src/device/kbc_at.c
@@ -1106,6 +1106,14 @@ write64_generic(void *priv, uint8_t val)
                      */
                     uint8_t p1 = 0x30;
                     kbc_delay_to_ob(dev, p1, 0, 0x00);
+                } else if (!strcmp(machine_get_internal_name(), "dellplato") | !strcmp(machine_get_internal_name(), "dellhannibalp")) {
+                    /*
+                       Dell Dimension XPS Pxxx & Pxxxa/Mxxxa:
+                           - Bit 3: Password disable jumper (must be clear);
+                           - Bit 4: Clear CMOS jumper (must be set);
+                     */
+                    uint8_t p1 = 0x10;
+                    kbc_delay_to_ob(dev, p1, 0, 0x00);
                 } else {
                     /* (B0 or F0) | (0x08 or 0x0c) */
                     uint8_t p1_out = ((dev->p1 | fixed_bits) & 0xf0) |