consolidate haswell iommu patches

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 0 insertions, 92 deletions

diff --git a/config/coreboot/default/patches/0039-ec-dell-mec5035-Add-command-to-disable-EC-initiated-.patch b/config/coreboot/default/patches/0039-ec-dell-mec5035-Add-command-to-disable-EC-initiated-.patch
deleted file mode 100644
index 6518493e..00000000
--- a/config/coreboot/default/patches/0039-ec-dell-mec5035-Add-command-to-disable-EC-initiated-.patch
+++ /dev/null
@@ -1,92 +0,0 @@
-From fa7d21faf931756d8adb84071bc503a0fe8e64c3 Mon Sep 17 00:00:00 2001
-From: Nicholas Chin <nic.c3.14@gmail.com>
-Date: Sun, 11 May 2025 15:41:22 -0600
-Subject: [PATCH 39/51] ec/dell/mec5035: Add command to disable EC-initiated
- thermal shutdown
-
-If command 0xBF isn't sent, the EC shuts down the system without warning
-as soon as the CPU temperature reaches about 87 degrees, without letting
-the CPU thermal throttle to try and reduce the temperature. With vendor
-firmware, the CPU is able to reach around 100 degrees before thermal
-throttling.
-
-This command was found by collecting EC commands by logging the LPC bus
-while running with vendor firmware and then replaying observed commands
-from coreboot. By systematically replaying subsets of commands in a
-binary search pattern and then stress testing the system, the command to
-disable the shutdown was isolated.
-
-The exact meaning of the parameters for this command are unknown at this
-time, but do seem to differ between different generations of these
-laptops. Due to this, the commmand should be called by mainboard
-specific code which passes the specific parameter value used.
-
-The Google Wilco EC code, which runs on Latitude Chromebooks and shares
-many commands with the standard Latitude ECs, suggests that command 0xBF
-tells the EC about the processors CPUID. However, the values observed in
-LPC bus logs do not seem to correspond with any CPUID values on the
-non-Chromebook systems I tested.
-
-Observed command parameter values (sent on mailbox registers 2-4):
-- E6430 (Ivy Bridge): 0x07, 0x00, 0x00
-- M6800 (Haswell): 0x14, 0x00, 0x00
-
-Change-Id: I42f09a3ef681007f64d9c5b1a29248b594737a86
-Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
----
- src/ec/dell/mec5035/mec5035.c | 19 +++++++++++++++++++
- src/ec/dell/mec5035/mec5035.h |  2 ++
- 2 files changed, 21 insertions(+)
-
-diff --git a/src/ec/dell/mec5035/mec5035.c b/src/ec/dell/mec5035/mec5035.c
-index c5067c16f6..b316fa4989 100644
---- a/src/ec/dell/mec5035/mec5035.c
-+++ b/src/ec/dell/mec5035/mec5035.c
-@@ -114,6 +114,25 @@ void mec5035_sleep_enable(void)
- 	ec_command(CMD_SLEEP_ENABLE);
- }
- 
-+void mec5035_cmd_bf(u8 i)
-+{
-+	/*
-+	 * If this command isn't sent, the EC shuts down the system as soon as
-+	 * the CPU temperature reaches about 87 degrees. It is unknown exactly
-+	 * what the parameters represent. The Google Wilco EC code, which runs
-+	 * on Latitude Chromebooks and shares some commands with the standard
-+	 * Latitude EC code, suggests command 0xBF tells the EC the CPUID, but
-+	 * the values observed in LPC bus logs don't seem to match any CPUID
-+	 * values of the normal Latitudes this was tested with.
-+	 * Observed i values:
-+	 * - E6430 (Ivy Bridge): 0x7
-+	 * - M6800 (Haswell): 0x14
-+	 */
-+	u8 buf[3] = {i, 0, 0};
-+	write_mailbox_regs(buf, 2, 3);
-+	ec_command(CMD_BF);
-+}
-+
- void mec5035_early_init(void)
- {
- 	/* If this isn't sent the EC shuts down the system after about 15
-diff --git a/src/ec/dell/mec5035/mec5035.h b/src/ec/dell/mec5035/mec5035.h
-index 5cd907bf71..71d1a71075 100644
---- a/src/ec/dell/mec5035/mec5035.h
-+++ b/src/ec/dell/mec5035/mec5035.h
-@@ -14,6 +14,7 @@ enum mec5035_cmd {
- 	CMD_POWER_BUTTON_TO_HOST = 0x3e,
- 	CMD_ACPI_WAKEUP_CHANGE = 0x4a,
- 	CMD_SLEEP_ENABLE = 0x64,
-+	CMD_BF = 0xbf,
- 	CMD_CPU_OK = 0xc2,
- };
- 
-@@ -65,5 +66,6 @@ void mec5035_change_wake(u8 source, enum ec_wake_change change);
- void mec5035_sleep_enable(void);
- 
- void mec5035_smi_sleep(int slp_type);
-+void mec5035_cmd_bf(u8 i);
- 
- #endif /* _EC_DELL_MEC5035_H_ */
--- 
-2.47.3
-