coreboot/default: Re-base all patches

There were a lot of unnecessary patches, such as the VRAM
patches; as Nicholas Chin has explained to me, the drivers
for these machines will just allocate what RAM they want
anyway, so in a lot of cases the extra allocated Video RAM
simply reduces the total amount of memory for other uses.

In general, we have a lot of patches that have existed for
years. A much more aggressive sweep will be done in the next
major audit, especially when the revisions are updated again.

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

1 files changed, 430 insertions, 0 deletions

diff --git a/config/coreboot/default/patches/0009-mb-dell-Add-Latitude-E5530-Ivy-Bridge.patch b/config/coreboot/default/patches/0009-mb-dell-Add-Latitude-E5530-Ivy-Bridge.patch
new file mode 100644
index 00000000..a2a13166
--- /dev/null
+++ b/config/coreboot/default/patches/0009-mb-dell-Add-Latitude-E5530-Ivy-Bridge.patch
@@ -0,0 +1,430 @@
+From 423e2e28618b08a4107aea0a2fbc1096f5a8be02 Mon Sep 17 00:00:00 2001
+From: Nicholas Chin <nic.c3.14@gmail.com>
+Date: Wed, 31 Jan 2024 22:57:07 -0700
+Subject: [PATCH 09/51] mb/dell: Add Latitude E5530 (Ivy Bridge)
+
+Mainboard is QXW10/LA-7902P (UMA). I do not physically have this board;
+someone with physical access to one sent me the output of autoport which
+I then modified to produce this port. I was also sent the VBT binary,
+which was obtained from `/sys/kernel/debug/dri/0/i915_vbt` while running
+version A21 of the vendor firmware.
+
+This was originally tested and found to be working as a standalone board
+port in Libreboot, but this variant based port in upstream coreboot has
+not been tested.
+
+This can be internally flashed by sending a command to the EC, which
+causes the EC to pull the FDO pin low and the firmware to skip setting
+up any chipset based write protections [1]. The EC is the SMSC MEC5055,
+which seems to be compatible with the existing MEC5035 code.
+
+Change-Id: Idaf6618df70aa19d8e60b2263088737712dec5f0
+Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
+---
+ src/mainboard/dell/snb_ivb_latitude/Kconfig   |   7 +
+ .../dell/snb_ivb_latitude/Kconfig.name        |   3 +
+ .../snb_ivb_latitude/variants/e5530/data.vbt  | Bin 0 -> 6144 bytes
+ .../variants/e5530/early_init.c               |  14 ++
+ .../snb_ivb_latitude/variants/e5530/gpio.c    | 194 ++++++++++++++++++
+ .../variants/e5530/hda_verb.c                 |  32 +++
+ .../variants/e5530/overridetree.cb            |  39 ++++
+ 7 files changed, 289 insertions(+)
+ create mode 100644 src/mainboard/dell/snb_ivb_latitude/variants/e5530/data.vbt
+ create mode 100644 src/mainboard/dell/snb_ivb_latitude/variants/e5530/early_init.c
+ create mode 100644 src/mainboard/dell/snb_ivb_latitude/variants/e5530/gpio.c
+ create mode 100644 src/mainboard/dell/snb_ivb_latitude/variants/e5530/hda_verb.c
+ create mode 100644 src/mainboard/dell/snb_ivb_latitude/variants/e5530/overridetree.cb
+
+diff --git a/src/mainboard/dell/snb_ivb_latitude/Kconfig b/src/mainboard/dell/snb_ivb_latitude/Kconfig
+index 03377275f0..183a67bec3 100644
+--- a/src/mainboard/dell/snb_ivb_latitude/Kconfig
++++ b/src/mainboard/dell/snb_ivb_latitude/Kconfig
+@@ -17,6 +17,11 @@ config BOARD_DELL_SNB_IVB_LATITUDE_COMMON
+ 	select SYSTEM_TYPE_LAPTOP
+ 	select USE_NATIVE_RAMINIT
+ 
++config BOARD_DELL_LATITUDE_E5530
++	select BOARD_DELL_SNB_IVB_LATITUDE_COMMON
++	select BOARD_ROMSIZE_KB_12288
++	select SOUTHBRIDGE_INTEL_C216
++
+ config BOARD_DELL_LATITUDE_E6430
+ 	select BOARD_DELL_SNB_IVB_LATITUDE_COMMON
+ 	select BOARD_ROMSIZE_KB_12288
+@@ -38,6 +43,7 @@ config MAINBOARD_DIR
+ 	default "dell/snb_ivb_latitude"
+ 
+ config MAINBOARD_PART_NUMBER
++	default "Latitude E5530" if BOARD_DELL_LATITUDE_E5530
+ 	default "Latitude E6430" if BOARD_DELL_LATITUDE_E6430
+ 	default "Latitude E6530" if BOARD_DELL_LATITUDE_E6530
+ 
+@@ -48,6 +54,7 @@ config USBDEBUG_HCD_INDEX
+ 	default 2
+ 
+ config VARIANT_DIR
++	default "e5530" if BOARD_DELL_LATITUDE_E5530
+ 	default "e6430" if BOARD_DELL_LATITUDE_E6430
+ 	default "e6530" if BOARD_DELL_LATITUDE_E6530
+ 
+diff --git a/src/mainboard/dell/snb_ivb_latitude/Kconfig.name b/src/mainboard/dell/snb_ivb_latitude/Kconfig.name
+index d89185d670..c15ef4028f 100644
+--- a/src/mainboard/dell/snb_ivb_latitude/Kconfig.name
++++ b/src/mainboard/dell/snb_ivb_latitude/Kconfig.name
+@@ -1,5 +1,8 @@
+ ## SPDX-License-Identifier: GPL-2.0-only
+ 
++config BOARD_DELL_LATITUDE_E5530
++	bool "Latitude E5530"
++
+ config BOARD_DELL_LATITUDE_E6430
+ 	bool "Latitude E6430"
+ 
+diff --git a/src/mainboard/dell/snb_ivb_latitude/variants/e5530/data.vbt b/src/mainboard/dell/snb_ivb_latitude/variants/e5530/data.vbt
+new file mode 100644
+index 0000000000000000000000000000000000000000..3c54b70be7856a6420d001112d7f17f8bab46ed3
+GIT binary patch
+literal 6144
+zcmeHKU2Gdg5dO}0w$JA~+qs02q)iz56C9e5vuQ#oL0l3O+%|395Q2peO{y4(2uX0t
+zuMja1N)bPb1cE+5)fYsCK!89MFQAGChyWpk5PuR<K|G+sLmxmOR4}u5=Rg`mj70g7
+zvgdDic6N4dW^QKhynd)>kS^cR)3#-(r*-?zo-O^C(kLvv8XM<+Y3tdt^YY!P?!oTe
+zJ^ed-x6w0Lh5fN#jsv5TWE#mtd*_yky}9xDK(kOwLt+C7_AQAd#iwr=o0`gvQZ`{x
+z6ZeT`x^^;8+a~jSa^o~PF@8J6N5;o#dhCwebaM;!_oisw1#O9K={qQM<@Oeu$lXeN
+z#wJGcW4Y<2)-A{Bot(NoKX%>qdnw-AOi9bKT9Z~HL5|7PJDHz4kGlEx143q+26EH6
+z{4KfB^9;?<fTOaiNPy%=@LovL&q<^d1Qdi+Xex9SvIM^ZLq%9cP{A1rE>#dw(WfA;
+zBCR3@pCS1a;A|CZW1h7H*l#mW{%y{bf)9ofiz!EHzyiac@{RpMzz>O-<~{hx5tw%b
+z3ZJWD4_g-`iF`tUJb}+Vfe;XI1T2Y4_Y!iVk<<T4ce(^PWKh<?N^a`t+}vgNr25iZ
+z`!fTBL)ojYF5G?3y|eW=`9>MLB9et&!A7LDDE7&5ye#|hn%s#IWgagDEPNHHMUhb-
+ztc9t?uz{bD#kh#kpsE;AO-wWHV?4olPStRPag^~k<737bjBgm<GlC%vRgBe)4U9I%
+zg^XUtcE**A5ylOSn;A2V2N;hso?--U#>t|ufS}_`LGs2bcSKCVBh4s0>G7ZR_@NWx
+zkph}GhP}~YR?roT!61GqzQ?gBsuv3jY}UXbmr|alv^VxUqbz5<`5=!hhpaa*7DK~4
+zP4ad6dhH!>nYpc4{J&G-w{UiWo$zXnTz{tAq0|?c_`QJ7pKmCwIpe7Uix$P?9}v*1
+z(aVR6OkMkQ6oM}*UC@j78!~>7=OZCVYXeu|u0SiI4}w$uw6&0P09LF%Hp}O&IA3gl
+z4@ap0NfAe+q(ZVm{Bwe*Do~kbCc$Q!x7b3Sk9tLgVmsR<Q4H=9Nl;mmf2xpY<*d*-
+z`yI_BR#`La=Oxxt#qgS`3pER^nh^CZ%*qlq2N9@uSAtz-C7AhduB_U|{>#oOrY`tq
+z%|?L!zRd2-$V6^@$H<Mj3MXf#F<J+^8%<X2{tnmQTI*aK*ageBrm9^|<Ked3j_s;%
+zva<(Dob)BOwdcj8Z67UhYUAjbk==Of9W#D7k!DJobLx$$fXD_wuZyD&Kk-$EIY~S`
+zan1ANbFUW8hZ0pUw5)y??*}!;chdgq|0X5;s;m`@YdY{zs4z#z8e;13T6b4tC7gy$
+zTwszEQhk0!U$`3=Qi)ZbY^*|bAyvF>@ml^iaX;uzoVB3JA(|h9tcNKXHdA43N0|18
+z&3$2QE=)(l=6qQDAWT1oO-<KoblR+&{kk@!)1A8ch^`&b>2=+FU)Mg<35IDJ+8Tp;
+z40F)Xt}$rVFdsLxLk7KRn4cKhmj<a3vp%A&kI>eLd38j)HbM_Y%!3i_aD?8An8za8
+z@d(AD=Gv&%5;e{}p%i?_q(T*^IwzEx*Eu1wKHV9=lVUvjqv!B@cWER!2fe%`IqO?q
+z!=Wf4kzGUaLX8`m#*P^uL?%M#6qc9Qu(YT|ZMb#7UzCc_(DkQYEG<G&Q*QkX`CS`I
+z8cwQnl8A#CMH~W79L&{2*Jof_MD5t{bPTAszWUa20yPzD=*wW8)wHSu?avDhffu^!
+zL>Q#%k_O0@^DN5S@MXi$D;acJ>#cTV-(U@Offv4ACp4hO4$Ll!WO)s3P4=t9vpWBC
+zSckhlcD?xUuX=Gx96Dx{IsQ23r&;o1*+^Cp2RA3nd$A-RIHP2Q7uitC>c67FIR*5}
+zB3a%B!?6K=TJ$W+SJv@*9Lms{mTvWmU4Zanj_Z*lSqOGISzYp?yawOqLhVhRt#-E6
+zd)YW~h&meh-5prIE}Cr&7f?MMi&cqTt_^%Fa?>k(=`9jVoIf@}{g+WX#TpWuc+!2v
+zPG^>A|NZ2GlGsKdGqN{7>Fr7+Hc_^3z}uBhC4?nzOQ*!QyVugGjkK_~$bvtfY`h79
+z9rOI3;Mt}9)_G{zXTAPw`8T@6=Ut0r9R5;0#Zy|#8F;v4^UAmqft3iXL|`QXD-l?U
+Jz~2*rUjdP?m;3+#
+
+literal 0
+HcmV?d00001
+
+diff --git a/src/mainboard/dell/snb_ivb_latitude/variants/e5530/early_init.c b/src/mainboard/dell/snb_ivb_latitude/variants/e5530/early_init.c
+new file mode 100644
+index 0000000000..ff83db095b
+--- /dev/null
++++ b/src/mainboard/dell/snb_ivb_latitude/variants/e5530/early_init.c
+@@ -0,0 +1,14 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++
++#include <bootblock_common.h>
++#include <device/pci_ops.h>
++#include <ec/dell/mec5035/mec5035.h>
++#include <southbridge/intel/bd82x6x/pch.h>
++
++void bootblock_mainboard_early_init(void)
++{
++	pci_write_config16(PCH_LPC_DEV, LPC_EN, CNF1_LPC_EN | MC_LPC_EN
++			| KBC_LPC_EN | FDD_LPC_EN | LPT_LPC_EN
++			| COMB_LPC_EN | COMA_LPC_EN);
++	mec5035_early_init();
++}
+diff --git a/src/mainboard/dell/snb_ivb_latitude/variants/e5530/gpio.c b/src/mainboard/dell/snb_ivb_latitude/variants/e5530/gpio.c
+new file mode 100644
+index 0000000000..0599f13921
+--- /dev/null
++++ b/src/mainboard/dell/snb_ivb_latitude/variants/e5530/gpio.c
+@@ -0,0 +1,194 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++
++#include <southbridge/intel/common/gpio.h>
++
++static const struct pch_gpio_set1 pch_gpio_set1_mode = {
++	.gpio0 = GPIO_MODE_GPIO,
++	.gpio1 = GPIO_MODE_GPIO,
++	.gpio2 = GPIO_MODE_GPIO,
++	.gpio3 = GPIO_MODE_GPIO,
++	.gpio4 = GPIO_MODE_GPIO,
++	.gpio5 = GPIO_MODE_NATIVE,
++	.gpio6 = GPIO_MODE_GPIO,
++	.gpio7 = GPIO_MODE_GPIO,
++	.gpio8 = GPIO_MODE_GPIO,
++	.gpio9 = GPIO_MODE_NATIVE,
++	.gpio10 = GPIO_MODE_NATIVE,
++	.gpio11 = GPIO_MODE_NATIVE,
++	.gpio12 = GPIO_MODE_GPIO,
++	.gpio13 = GPIO_MODE_GPIO,
++	.gpio14 = GPIO_MODE_GPIO,
++	.gpio15 = GPIO_MODE_GPIO,
++	.gpio16 = GPIO_MODE_GPIO,
++	.gpio17 = GPIO_MODE_GPIO,
++	.gpio18 = GPIO_MODE_NATIVE,
++	.gpio19 = GPIO_MODE_GPIO,
++	.gpio20 = GPIO_MODE_NATIVE,
++	.gpio21 = GPIO_MODE_GPIO,
++	.gpio22 = GPIO_MODE_GPIO,
++	.gpio23 = GPIO_MODE_NATIVE,
++	.gpio24 = GPIO_MODE_GPIO,
++	.gpio25 = GPIO_MODE_NATIVE,
++	.gpio26 = GPIO_MODE_NATIVE,
++	.gpio27 = GPIO_MODE_GPIO,
++	.gpio28 = GPIO_MODE_GPIO,
++	.gpio29 = GPIO_MODE_GPIO,
++	.gpio30 = GPIO_MODE_NATIVE,
++	.gpio31 = GPIO_MODE_NATIVE,
++};
++
++static const struct pch_gpio_set1 pch_gpio_set1_direction = {
++	.gpio0 = GPIO_DIR_INPUT,
++	.gpio1 = GPIO_DIR_INPUT,
++	.gpio2 = GPIO_DIR_INPUT,
++	.gpio3 = GPIO_DIR_INPUT,
++	.gpio4 = GPIO_DIR_INPUT,
++	.gpio6 = GPIO_DIR_INPUT,
++	.gpio7 = GPIO_DIR_INPUT,
++	.gpio8 = GPIO_DIR_INPUT,
++	.gpio12 = GPIO_DIR_OUTPUT,
++	.gpio13 = GPIO_DIR_INPUT,
++	.gpio14 = GPIO_DIR_INPUT,
++	.gpio15 = GPIO_DIR_INPUT,
++	.gpio16 = GPIO_DIR_INPUT,
++	.gpio17 = GPIO_DIR_INPUT,
++	.gpio19 = GPIO_DIR_INPUT,
++	.gpio21 = GPIO_DIR_INPUT,
++	.gpio22 = GPIO_DIR_INPUT,
++	.gpio24 = GPIO_DIR_INPUT,
++	.gpio27 = GPIO_DIR_INPUT,
++	.gpio28 = GPIO_DIR_OUTPUT,
++	.gpio29 = GPIO_DIR_INPUT,
++};
++
++static const struct pch_gpio_set1 pch_gpio_set1_level = {
++	.gpio12 = GPIO_LEVEL_HIGH,
++	.gpio28 = GPIO_LEVEL_LOW,
++};
++
++static const struct pch_gpio_set1 pch_gpio_set1_reset = {
++	.gpio30 = GPIO_RESET_RSMRST,
++};
++
++static const struct pch_gpio_set1 pch_gpio_set1_invert = {
++	.gpio0 = GPIO_INVERT,
++	.gpio8 = GPIO_INVERT,
++	.gpio13 = GPIO_INVERT,
++	.gpio14 = GPIO_INVERT,
++};
++
++static const struct pch_gpio_set1 pch_gpio_set1_blink = {
++};
++
++static const struct pch_gpio_set2 pch_gpio_set2_mode = {
++	.gpio32 = GPIO_MODE_NATIVE,
++	.gpio33 = GPIO_MODE_GPIO,
++	.gpio34 = GPIO_MODE_GPIO,
++	.gpio35 = GPIO_MODE_GPIO,
++	.gpio36 = GPIO_MODE_GPIO,
++	.gpio37 = GPIO_MODE_GPIO,
++	.gpio38 = GPIO_MODE_GPIO,
++	.gpio39 = GPIO_MODE_GPIO,
++	.gpio40 = GPIO_MODE_NATIVE,
++	.gpio41 = GPIO_MODE_NATIVE,
++	.gpio42 = GPIO_MODE_NATIVE,
++	.gpio43 = GPIO_MODE_NATIVE,
++	.gpio44 = GPIO_MODE_NATIVE,
++	.gpio45 = GPIO_MODE_GPIO,
++	.gpio46 = GPIO_MODE_NATIVE,
++	.gpio47 = GPIO_MODE_NATIVE,
++	.gpio48 = GPIO_MODE_GPIO,
++	.gpio49 = GPIO_MODE_GPIO,
++	.gpio50 = GPIO_MODE_NATIVE,
++	.gpio51 = GPIO_MODE_GPIO,
++	.gpio52 = GPIO_MODE_GPIO,
++	.gpio53 = GPIO_MODE_GPIO,
++	.gpio54 = GPIO_MODE_GPIO,
++	.gpio55 = GPIO_MODE_NATIVE,
++	.gpio56 = GPIO_MODE_NATIVE,
++	.gpio57 = GPIO_MODE_GPIO,
++	.gpio58 = GPIO_MODE_NATIVE,
++	.gpio59 = GPIO_MODE_NATIVE,
++	.gpio60 = GPIO_MODE_GPIO,
++	.gpio61 = GPIO_MODE_NATIVE,
++	.gpio62 = GPIO_MODE_NATIVE,
++	.gpio63 = GPIO_MODE_NATIVE,
++};
++
++static const struct pch_gpio_set2 pch_gpio_set2_direction = {
++	.gpio33 = GPIO_DIR_INPUT,
++	.gpio34 = GPIO_DIR_INPUT,
++	.gpio35 = GPIO_DIR_INPUT,
++	.gpio36 = GPIO_DIR_INPUT,
++	.gpio37 = GPIO_DIR_INPUT,
++	.gpio38 = GPIO_DIR_INPUT,
++	.gpio39 = GPIO_DIR_INPUT,
++	.gpio45 = GPIO_DIR_INPUT,
++	.gpio48 = GPIO_DIR_INPUT,
++	.gpio49 = GPIO_DIR_INPUT,
++	.gpio51 = GPIO_DIR_INPUT,
++	.gpio52 = GPIO_DIR_INPUT,
++	.gpio53 = GPIO_DIR_INPUT,
++	.gpio54 = GPIO_DIR_INPUT,
++	.gpio57 = GPIO_DIR_INPUT,
++	.gpio60 = GPIO_DIR_OUTPUT,
++};
++
++static const struct pch_gpio_set2 pch_gpio_set2_level = {
++	.gpio60 = GPIO_LEVEL_HIGH,
++};
++
++static const struct pch_gpio_set2 pch_gpio_set2_reset = {
++};
++
++static const struct pch_gpio_set3 pch_gpio_set3_mode = {
++	.gpio64 = GPIO_MODE_NATIVE,
++	.gpio65 = GPIO_MODE_NATIVE,
++	.gpio66 = GPIO_MODE_NATIVE,
++	.gpio67 = GPIO_MODE_NATIVE,
++	.gpio68 = GPIO_MODE_GPIO,
++	.gpio69 = GPIO_MODE_GPIO,
++	.gpio70 = GPIO_MODE_GPIO,
++	.gpio71 = GPIO_MODE_GPIO,
++	.gpio72 = GPIO_MODE_NATIVE,
++	.gpio73 = GPIO_MODE_NATIVE,
++	.gpio74 = GPIO_MODE_GPIO,
++	.gpio75 = GPIO_MODE_NATIVE,
++};
++
++static const struct pch_gpio_set3 pch_gpio_set3_direction = {
++	.gpio68 = GPIO_DIR_INPUT,
++	.gpio69 = GPIO_DIR_INPUT,
++	.gpio70 = GPIO_DIR_INPUT,
++	.gpio71 = GPIO_DIR_INPUT,
++	.gpio74 = GPIO_DIR_INPUT,
++};
++
++static const struct pch_gpio_set3 pch_gpio_set3_level = {
++};
++
++static const struct pch_gpio_set3 pch_gpio_set3_reset = {
++};
++
++const struct pch_gpio_map mainboard_gpio_map = {
++	.set1 = {
++		.mode		= &pch_gpio_set1_mode,
++		.direction	= &pch_gpio_set1_direction,
++		.level		= &pch_gpio_set1_level,
++		.blink		= &pch_gpio_set1_blink,
++		.invert		= &pch_gpio_set1_invert,
++		.reset		= &pch_gpio_set1_reset,
++	},
++	.set2 = {
++		.mode		= &pch_gpio_set2_mode,
++		.direction	= &pch_gpio_set2_direction,
++		.level		= &pch_gpio_set2_level,
++		.reset		= &pch_gpio_set2_reset,
++	},
++	.set3 = {
++		.mode		= &pch_gpio_set3_mode,
++		.direction	= &pch_gpio_set3_direction,
++		.level		= &pch_gpio_set3_level,
++		.reset		= &pch_gpio_set3_reset,
++	},
++};
+diff --git a/src/mainboard/dell/snb_ivb_latitude/variants/e5530/hda_verb.c b/src/mainboard/dell/snb_ivb_latitude/variants/e5530/hda_verb.c
+new file mode 100644
+index 0000000000..3e89a6d75f
+--- /dev/null
++++ b/src/mainboard/dell/snb_ivb_latitude/variants/e5530/hda_verb.c
+@@ -0,0 +1,32 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++
++#include <device/azalia_device.h>
++
++const u32 cim_verb_data[] = {
++	0x111d76df,	/* Codec Vendor / Device ID: IDT */
++	0x1028053d,	/* Subsystem ID */
++	11,		/* Number of 4 dword sets */
++	AZALIA_SUBVENDOR(0, 0x1028053d),
++	AZALIA_PIN_CFG(0, 0x0a, 0x04a11020),
++	AZALIA_PIN_CFG(0, 0x0b, 0x0421101f),
++	AZALIA_PIN_CFG(0, 0x0c, 0x400000f0),
++	AZALIA_PIN_CFG(0, 0x0d, 0x90170110),
++	AZALIA_PIN_CFG(0, 0x0e, 0x23011050),
++	AZALIA_PIN_CFG(0, 0x0f, 0x23a1102e),
++	AZALIA_PIN_CFG(0, 0x10, 0x400000f3),
++	AZALIA_PIN_CFG(0, 0x11, 0x400000f0),
++	AZALIA_PIN_CFG(0, 0x1f, 0x400000f0),
++	AZALIA_PIN_CFG(0, 0x20, 0xd5a301a0),
++
++	0x80862806,	/* Codec Vendor / Device ID: Intel */
++	0x80860101,	/* Subsystem ID */
++	4,		/* Number of 4 dword sets */
++	AZALIA_SUBVENDOR(3, 0x80860101),
++	AZALIA_PIN_CFG(3, 0x05, 0x18560010),
++	AZALIA_PIN_CFG(3, 0x06, 0x18560020),
++	AZALIA_PIN_CFG(3, 0x07, 0x18560030),
++};
++
++const u32 pc_beep_verbs[0] = {};
++
++AZALIA_ARRAY_SIZES;
+diff --git a/src/mainboard/dell/snb_ivb_latitude/variants/e5530/overridetree.cb b/src/mainboard/dell/snb_ivb_latitude/variants/e5530/overridetree.cb
+new file mode 100644
+index 0000000000..85c448d010
+--- /dev/null
++++ b/src/mainboard/dell/snb_ivb_latitude/variants/e5530/overridetree.cb
+@@ -0,0 +1,39 @@
++## SPDX-License-Identifier: GPL-2.0-or-later
++
++chip northbridge/intel/sandybridge
++	device domain 0 on
++		subsystemid 0x1028 0x053d inherit
++
++		device ref igd on
++			register "gpu_cpu_backlight" = "0x00000000"
++			register "gpu_pch_backlight" = "0x03d003d0"
++		end
++
++		chip southbridge/intel/bd82x6x
++			register "usb_port_config" = "{
++				{ 1, 1, 0 },
++				{ 1, 1, 0 },
++				{ 1, 1, 1 },
++				{ 1, 1, 1 },
++				{ 1, 1, 2 },
++				{ 1, 1, 2 },
++				{ 1, 1, 3 },
++				{ 1, 0, 3 },
++				{ 1, 2, 4 },
++				{ 1, 1, 4 },
++				{ 1, 1, 5 },
++				{ 1, 1, 5 },
++				{ 1, 0, 6 },
++				{ 1, 1, 6 },
++			}"
++
++			device ref xhci on
++				register "superspeed_capable_ports" = "0x0000000f"
++				register "xhci_overcurrent_mapping" = "0x00000c03"
++				register "xhci_switchable_ports" = "0x0000000f"
++			end
++			device ref gbe off end
++			device ref pcie_rp7 on end # BCM5761 Ethernet
++		end
++	end
++end
+-- 
+2.39.5
+