Fixed screen brightness problems (tested on 1.0.0 and 2.0.0). Some refactoring.

ipl/arm64.h

@@ -0,0 +1,35 @@
+/*
+* Copyright (c) 2018 naehrwert
+*
+* This program is free software; you can redistribute it and/or modify it
+* under the terms and conditions of the GNU General Public License,
+* version 2, as published by the Free Software Foundation.
+*
+* This program is distributed in the hope it will be useful, but WITHOUT
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+* more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _ARM64_H_
+#define _ARM64_H_
+
+#include "types.h"
+
+#define LSL0 0
+#define LSL16 16
+#define LSL32 32
+
+#define _PAGEOFF(x) ((x) & 0xFFFFF000)
+
+#define _ADRP(r, o) 0x90000000 | ((((o) >> 12) & 0x3) << 29) | ((((o) >> 12) & 0x1FFFFC) << 3) | ((r) & 0x1F)
+#define _BL(a, o) 0x94000000 | ((((o) - (a)) >> 2) & 0x3FFFFFF)
+#define _B(a, o) 0x94000000 | ((((o) - (a)) >> 2) & 0x3FFFFFF)
+#define _MOVKX(r, i, s) 0xF2800000 | (((s) & 0x30) << 17) | (((i) & 0xFFFF) << 5) | ((r) & 0x1F)
+#define _MOVZX(r, i, s) 0xD2800000 | (((s) & 0x30) << 17) | (((i) & 0xFFFF) << 5) | ((r) & 0x1F)
+#define _NOP() 0xD503201F
+
+#endif

ipl/btn.c

@@ -37,22 +37,21 @@ u32 btn_wait()
 	u32 res = 0, btn = btn_read();
 	int pwr = 0;
 
-	// Power button down, raise a filter.
+	//Power button down, raise a filter.
 	if (btn & BTN_POWER)
 	{
 		pwr = 1;
-		btn &= 0xFFFFFFFE;
+		btn &= ~BTN_POWER;
 	}
 
 	do
 	{
 		res = btn_read();
-		// Power button up, remove filter.
+		//Power button up, remove filter.
 		if (!(res & BTN_POWER) && pwr)
 			pwr = 0;
-		// Power button still down.
+		else if (pwr) //Power button still down.
-		else if (pwr)
+			res &= ~BTN_POWER;
-			res &= 0xFFFFFFFE;
 	} while (btn == res);
 
 	return res;

ipl/di.c

@@ -22,6 +22,8 @@
 #include "i2c.h"
 #include "pmc.h"
 #include "max77620.h"
+#include "gpio.h"
+#include "pinmux.h"
 
 #include "di.inl"
 
@@ -56,25 +58,25 @@ void display_init()
 	PMC(APBDEV_PMC_IO_DPD2_REQ) = 0x40000000;
 
 	//Config pins.
-	PINMUX_AUX(0x1D0) &= 0xFFFFFFEF;
+	PINMUX_AUX(PINMUX_AUX_NFC_EN) &= 0xFFFFFFEF;
-	PINMUX_AUX(0x1D4) &= 0xFFFFFFEF;
+	PINMUX_AUX(PINMUX_AUX_NFC_INT) &= 0xFFFFFFEF;
-	PINMUX_AUX(0x1FC) &= 0xFFFFFFEF;
+	PINMUX_AUX(PINMUX_AUX_LCD_BL_PWM) &= 0xFFFFFFEF;
-	PINMUX_AUX(0x200) &= 0xFFFFFFEF;
+	PINMUX_AUX(PINMUX_AUX_LCD_BL_EN) &= 0xFFFFFFEF;
-	PINMUX_AUX(0x204) &= 0xFFFFFFEF;
+	PINMUX_AUX(PINMUX_AUX_LCD_RST) &= 0xFFFFFFEF;
 
-	GPIO_3(0x00) = (GPIO_3(0x00) & 0xFFFFFFFC) | 0x3;
+	gpio_config(GPIO_PORT_I, GPIO_PIN_0 | GPIO_PIN_1, GPIO_MODE_GPIO); //Backlight +-5V.
-	GPIO_3(0x10) = (GPIO_3(0x10) & 0xFFFFFFFC) | 0x3;
+	gpio_output_enable(GPIO_PORT_I, GPIO_PIN_0 | GPIO_PIN_1, GPIO_OUTPUT_ENABLE); //Backlight +-5V.
-	GPIO_3(0x20) = (GPIO_3(0x20) & 0xFFFFFFFE) | 0x1;
+	gpio_write(GPIO_PORT_I, GPIO_PIN_0, GPIO_HIGH); //Backlight +5V enable.
-
-	sleep(10000u);
-
-	GPIO_3(0x20) = (GPIO_3(0x20) & 0xFFFFFFFD) | 0x2;
 
 	sleep(10000);
 
-	GPIO_6(0x04) = (GPIO_6(0x04) & 0xFFFFFFF8) | 0x7;
+	gpio_write(GPIO_PORT_I, GPIO_PIN_1, GPIO_HIGH); //Backlight -5V enable.
-	GPIO_6(0x14) = (GPIO_6(0x14) & 0xFFFFFFF8) | 0x7;
+
-	GPIO_6(0x24) = (GPIO_6(0x24) & 0xFFFFFFFD) | 0x2;
+	sleep(10000);
+
+	gpio_config(GPIO_PORT_V, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2, GPIO_MODE_GPIO); //Backlight PWM, Enable, Reset.
+	gpio_output_enable(GPIO_PORT_V, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2, GPIO_OUTPUT_ENABLE);
+	gpio_write(GPIO_PORT_V, GPIO_PIN_1, GPIO_HIGH); //Backlight Enable enable.
 
 	//Config display interface and display.
 	MIPI_CAL(0x60) = 0;
@@ -85,7 +87,7 @@ void display_init()
 
 	sleep(10000);
 
-	GPIO_6(0x24) = (GPIO_6(0x24) & 0xFFFFFFFB) | 0x4;
+	gpio_write(GPIO_PORT_V, GPIO_PIN_2, GPIO_HIGH); //Backlight Reset enable.
 
 	sleep(60000);
 
@@ -135,13 +137,16 @@ void display_init()
 
 void display_backlight(u8 enable)
 {
-	GPIO_6(0x24) = (GPIO_6(0x24) & 0xFFFFFFFE) | (enable & 1);
+	gpio_write(GPIO_PORT_V, GPIO_PIN_0, enable ? GPIO_HIGH : GPIO_LOW); //Backlight PWM.
 }
 
 void display_end()
 {
 	display_backlight(0);
-	DSI(_DSIREG(DSI_VIDEO_MODE_CONTROL)) = 1;
+
+	//TODO: figure out why this freezes.
+
+	/*DSI(_DSIREG(DSI_VIDEO_MODE_CONTROL)) = 1;
 	DSI(_DSIREG(DSI_WR_DATA)) = 0x2805;
 
 	u32 end = HOST1X(0x30A4) + 5;
@@ -164,17 +169,17 @@ void display_end()
 
 	sleep(50000);
 
-	GPIO_6(0x24) &= 0xFFFFFFFB;
+	//gpio_write(GPIO_PORT_V, GPIO_PIN_2, GPIO_LOW); //Backlight Reset disable.
 
-	sleep(10000);
+	//sleep(10000);
 
-	GPIO_3(0x20) &= 0xFFFFFFFD;
+	//gpio_write(GPIO_PORT_I, GPIO_PIN_1, GPIO_LOW); //Backlight -5V disable.
 
-	sleep(10000);
+	//sleep(10000);
 
-	GPIO_3(0x20) = (GPIO_3(0x20) >> 1) << 1;
+	//gpio_write(GPIO_PORT_I, GPIO_PIN_0, GPIO_LOW); //Backlight +5V disable.
 
-	sleep(10000);
+	//sleep(10000);
 
 	//Disable clocks.
 	CLOCK(0x308) = 0x1010000;
@@ -183,12 +188,12 @@ void display_end()
 	CLOCK(0x324) = 0x18000000;
 
 	DSI(_DSIREG(DSI_PAD_CONTROL_0)) = DSI_PAD_CONTROL_VS1_PULLDN_CLK | DSI_PAD_CONTROL_VS1_PULLDN(0xF) | DSI_PAD_CONTROL_VS1_PDIO_CLK | DSI_PAD_CONTROL_VS1_PDIO(0xF);
-	DSI(_DSIREG(DSI_POWER_CONTROL)) = 0;
+	DSI(_DSIREG(DSI_POWER_CONTROL)) = 0;*/
 
-	GPIO_6(0x04) &= 0xFFFFFFFE;
+	gpio_config(GPIO_PORT_V, GPIO_PIN_0, GPIO_MODE_SPIO); //Backlight PWM.
 
-	PINMUX_AUX(0x1FC) = (PINMUX_AUX(0x1FC) & 0xFFFFFFEF) | 0x10;
+	PINMUX_AUX(PINMUX_AUX_LCD_BL_PWM) = (PINMUX_AUX(PINMUX_AUX_LCD_BL_PWM) & 0xFFFFFFEF) | 0x10;
-	PINMUX_AUX(0x1FC) = (PINMUX_AUX(0x1FC) >> 2) << 2 | 1;
+	PINMUX_AUX(PINMUX_AUX_LCD_BL_PWM) = (PINMUX_AUX(PINMUX_AUX_LCD_BL_PWM) >> 2) << 2 | 1;
 }
 
 void display_color_screen(u32 color)

ipl/gfx.c

@@ -320,8 +320,8 @@ void gfx_set_pixel(gfx_ctxt_t *ctxt, u32 x, u32 y, u32 color)
 
 void gfx_line(gfx_ctxt_t *ctxt, int x0, int y0, int x1, int y1, u32 color)
 {
-	int dx = abs(x1-x0), sx = x0 < x1 ? 1 : -1;
+	int dx = abs(x1 - x0), sx = x0 < x1 ? 1 : -1;
-	int dy = abs(y1-y0), sy = y0 < y1 ? 1 : -1; 
+	int dy = abs(y1 - y0), sy = y0 < y1 ? 1 : -1; 
 	int err = (dx > dy ? dx : -dy) / 2, e2;
 
 	while (1)
@@ -330,7 +330,15 @@ void gfx_line(gfx_ctxt_t *ctxt, int x0, int y0, int x1, int y1, u32 color)
 		if (x0 == x1 && y0 == y1)
 			break;
 		e2 = err;
-		if (e2 >-dx) { err -= dy; x0 += sx; }
+		if (e2 >-dx)
-		if (e2 < dy) { err += dx; y0 += sy; }
+		{
+			err -= dy;
+			x0 += sx;
+		}
+		if (e2 < dy)
+		{
+			err += dx;
+			y0 += sy;
+		}
 	}
 }

ipl/hos.c

@@ -31,6 +31,7 @@
 #include "pkg1.h"
 #include "pkg2.h"
 #include "ff.h"
+#include "di.h"
 
 #include "gfx.h"
 extern gfx_ctxt_t gfx_ctxt;
@@ -73,9 +74,9 @@ typedef struct _merge_kip_t
 #define KB_FIRMWARE_VERSION_301 2
 #define KB_FIRMWARE_VERSION_400 3
 #define KB_FIRMWARE_VERSION_500 4
+#define KB_FIRMWARE_VERSION_MAX KB_FIRMWARE_VERSION_500
 
-#define NUM_KEYBLOB_KEYS 5
+static const u8 keyblob_keyseeds[][0x10] = {
-static const u8 keyblob_keyseeds[NUM_KEYBLOB_KEYS][0x10] = {
 	{ 0xDF, 0x20, 0x6F, 0x59, 0x44, 0x54, 0xEF, 0xDC, 0x70, 0x74, 0x48, 0x3B, 0x0D, 0xED, 0x9F, 0xD3 }, //1.0.0
 	{ 0x0C, 0x25, 0x61, 0x5D, 0x68, 0x4C, 0xEB, 0x42, 0x1C, 0x23, 0x79, 0xEA, 0x82, 0x25, 0x12, 0xAC }, //3.0.0
 	{ 0x33, 0x76, 0x85, 0xEE, 0x88, 0x4A, 0xAE, 0x0A, 0xC2, 0x8A, 0xFD, 0x7D, 0x63, 0xC0, 0x43, 0x3B }, //3.0.1
@@ -95,24 +96,12 @@ static const u8 console_keyseed[0x10] =
 static const u8 key8_keyseed[] =
 	{ 0xFB, 0x8B, 0x6A, 0x9C, 0x79, 0x00, 0xC8, 0x49, 0xEF, 0xD2, 0x4D, 0x85, 0x4D, 0x30, 0xA0, 0xC7 };
 
-static const u8 master_keyseed_4xx[0x10] = 
+static const u8 master_keyseed_4xx_5xx[0x10] = 
 	{ 0x2D, 0xC1, 0xF4, 0x8D, 0xF3, 0x5B, 0x69, 0x33, 0x42, 0x10, 0xAC, 0x65, 0xDA, 0x90, 0x46, 0x66 };
 
-static const u8 console_keyseed_4xx[0x10] = 
+static const u8 console_keyseed_4xx_5xx[0x10] = 
 	{ 0x0C, 0x91, 0x09, 0xDB, 0x93, 0x93, 0x07, 0x81, 0x07, 0x3C, 0xC4, 0x16, 0x22, 0x7C, 0x6C, 0x28 };
 
-#define CRC32C_POLY 0x82F63B78
-u32 crc32c(const u8 *buf, u32 len)
-{
-	u32 crc = 0xFFFFFFFF;
-	while (len--)
-	{
-		crc ^= *buf++;
-		for (int i = 0; i < 8; i++)
-			crc = (crc & 1) ? (crc >> 1) ^ CRC32C_POLY : crc >> 1;
-	}
-	return ~crc;
-}
 
 static void _se_lock()
 {
@@ -145,23 +134,26 @@ int keygen(u8 *keyblob, u32 kb, void *tsec_fw)
 {
 	u8 tmp[0x10];
 
-	se_key_acc_ctrl(0x0D, 0x15);
+	if (kb > KB_FIRMWARE_VERSION_MAX)
-	se_key_acc_ctrl(0x0E, 0x15);
+		return 0;
+
+	se_key_acc_ctrl(13, 0x15);
+	se_key_acc_ctrl(14, 0x15);
 
 	//Get TSEC key.
 	if (tsec_query(tmp, 1, tsec_fw) < 0)
 		return 0;
 
-	se_aes_key_set(0x0D, tmp, 0x10);
+	se_aes_key_set(13, tmp, 0x10);
 
 	//Derive keyblob keys from TSEC+SBK.
-	se_aes_crypt_block_ecb(0x0D, 0x00, tmp, keyblob_keyseeds[0]);
+	se_aes_crypt_block_ecb(13, 0, tmp, keyblob_keyseeds[0]);
-	se_aes_unwrap_key(0x0F, 0x0E, tmp);
+	se_aes_unwrap_key(15, 14, tmp);
-	se_aes_crypt_block_ecb(0xD, 0x00, tmp, keyblob_keyseeds[kb]);
+	se_aes_crypt_block_ecb(13, 0, tmp, keyblob_keyseeds[kb]);
-	se_aes_unwrap_key(0x0D, 0x0E, tmp);
+	se_aes_unwrap_key(13, 14, tmp);
 
-	// Clear SBK
+	//Clear SBK.
-	se_aes_key_clear(0x0E);
+	se_aes_key_clear(14);
 
 	//TODO: verify keyblob CMAC.
 	//se_aes_unwrap_key(11, 13, cmac_keyseed);
@@ -169,45 +161,42 @@ int keygen(u8 *keyblob, u32 kb, void *tsec_fw)
 	//if (!memcmp(keyblob, tmp, 0x10))
 	//	return 0;
 
-	se_aes_crypt_block_ecb(0x0D, 0, tmp, cmac_keyseed);
+	se_aes_crypt_block_ecb(13, 0, tmp, cmac_keyseed);
-	se_aes_unwrap_key(0x0B, 0x0D, cmac_keyseed);
+	se_aes_unwrap_key(11, 13, cmac_keyseed);
 
 	//Decrypt keyblob and set keyslots.
-	se_aes_crypt_ctr(0x0D, keyblob + 0x20, 0x90, keyblob + 0x20, 0x90, keyblob + 0x10);
+	se_aes_crypt_ctr(13, keyblob + 0x20, 0x90, keyblob + 0x20, 0x90, keyblob + 0x10);
-	se_aes_key_set(0x0B, keyblob + 0x20 + 0x80, 0x10); // package1 key
+	se_aes_key_set(11, keyblob + 0x20 + 0x80, 0x10); //Package1 key.
-	se_aes_key_set(0x0C, keyblob + 0x20, 0x10);
+	se_aes_key_set(12, keyblob + 0x20, 0x10);
-	se_aes_key_set(0x0D, keyblob + 0x20, 0x10);
+	se_aes_key_set(13, keyblob + 0x20, 0x10);
 
-	se_aes_crypt_block_ecb(0x0C, 0, tmp, master_keyseed_retail);
+	se_aes_crypt_block_ecb(12, 0, tmp, master_keyseed_retail);
 
 	switch (kb)
 	{
 		case KB_FIRMWARE_VERSION_100_200:
 		case KB_FIRMWARE_VERSION_300:
 		case KB_FIRMWARE_VERSION_301:
-			se_aes_unwrap_key(0x0D, 0x0F, console_keyseed);
+			se_aes_unwrap_key(13, 15, console_keyseed);
-			se_aes_unwrap_key(0x0C, 0x0C, master_keyseed_retail);
+			se_aes_unwrap_key(12, 12, master_keyseed_retail);
 		break;
-
 		case KB_FIRMWARE_VERSION_400:
-			se_aes_unwrap_key(0x0D, 0x0F, console_keyseed_4xx);
+			se_aes_unwrap_key(13, 15, console_keyseed_4xx_5xx);
-			se_aes_unwrap_key(0x0F, 0x0F, console_keyseed);
+			se_aes_unwrap_key(15, 15, console_keyseed);
-			se_aes_unwrap_key(0x0E, 0x0C, master_keyseed_4xx);
+			se_aes_unwrap_key(14, 12, master_keyseed_4xx_5xx);
-			se_aes_unwrap_key(0x0C, 0x0C, master_keyseed_retail);
+			se_aes_unwrap_key(12, 12, master_keyseed_retail);
 		break;
-
 		case KB_FIRMWARE_VERSION_500:
-		default:
+			se_aes_unwrap_key(10, 15, console_keyseed_4xx_5xx);
-			se_aes_unwrap_key(0x0A, 0x0F, console_keyseed_4xx);
+			se_aes_unwrap_key(15, 15, console_keyseed);
-			se_aes_unwrap_key(0x0F, 0x0F, console_keyseed);
+			se_aes_unwrap_key(14, 12, master_keyseed_4xx_5xx);
-			se_aes_unwrap_key(0x0E, 0x0C, master_keyseed_4xx);
+			se_aes_unwrap_key(12, 12, master_keyseed_retail);
-			se_aes_unwrap_key(0x0C, 0x0C, master_keyseed_retail);
 		break;
 	}
 
 	//Package2 key.
-	se_key_acc_ctrl(0x08, 0x15);
+	se_key_acc_ctrl(8, 0x15);
-	se_aes_unwrap_key(0x08, 0x0C, key8_keyseed);
+	se_aes_unwrap_key(8, 12, key8_keyseed);
 
 	return 1;
 }
@@ -385,6 +374,7 @@ int hos_launch(ini_sec_t *cfg)
 {
 	int bootStateDramPkg2;
 	int bootStatePkg2Continue;
+	int end_di = 0;
 	launch_ctxt_t ctxt;
 
 	memset(&ctxt, 0, sizeof(launch_ctxt_t));
@@ -491,24 +481,25 @@ int hos_launch(ini_sec_t *cfg)
 
 	gfx_printf(&gfx_con, "\n%kBooting...%k\n", 0xFF00FF96, 0xFFCCCCCC);
 
-	se_aes_key_clear(0x8);
+	se_aes_key_clear(8);
-	se_aes_key_clear(0xB);
+	se_aes_key_clear(11);
 
 	switch (ctxt.pkg1_id->kb)
 	{
 	case KB_FIRMWARE_VERSION_100_200:
 	case KB_FIRMWARE_VERSION_300:
 	case KB_FIRMWARE_VERSION_301:
-		se_key_acc_ctrl(0xC, 0xFF);
+		se_key_acc_ctrl(12, 0xFF);
-		se_key_acc_ctrl(0xD, 0xFF);
+		se_key_acc_ctrl(13, 0xFF);
 		bootStateDramPkg2 = 2;
 		bootStatePkg2Continue = 3;
+		end_di = 1;
 		break;
 	default:
 	case KB_FIRMWARE_VERSION_400:
 	case KB_FIRMWARE_VERSION_500:
-		se_key_acc_ctrl(0xC, 0xFF);
+		se_key_acc_ctrl(12, 0xFF);
-		se_key_acc_ctrl(0xF, 0xFF);
+		se_key_acc_ctrl(15, 0xFF);
 		bootStateDramPkg2 = 2;
 		bootStatePkg2Continue = 4;
 		break;
@@ -545,8 +536,9 @@ int hos_launch(ini_sec_t *cfg)
 	PMC(0x5BC) = 0xFFFFFFFF;
 	PMC(0x5C0) = 0xFFAAFFFF;*/
 
-	//TODO: Cleanup.
+	//Disable display.
-	//display_end();
+	if (end_di)
+		display_end();
 
 	//Signal to pkg2 ready and continue boot.
 	*mb_in = bootStatePkg2Continue;

ipl/pinmux.h

@@ -41,6 +41,11 @@
 #define PINMUX_AUX_DMIC3_CLK 0xB4
 #define PINMUX_AUX_UART2_TX 0xF4
 #define PINMUX_AUX_UART3_TX 0x104
+#define PINMUX_AUX_NFC_EN 0x1D0
+#define PINMUX_AUX_NFC_INT 0x1D4
+#define PINMUX_AUX_LCD_BL_PWM 0x1FC
+#define PINMUX_AUX_LCD_BL_EN 0x200
+#define PINMUX_AUX_LCD_RST 0x204
 #define PINMUX_AUX_GPIO_PE6 0x248
 #define PINMUX_AUX_GPIO_PH6 0x250
 #define PINMUX_AUX_GPIO_PZ1 0x280

ipl/pkg1.c

@@ -16,19 +16,13 @@
 
 #include <string.h>
 #include "pkg1.h"
+#include "arm64.h"
 #include "se.h"
 
-#define _ADRP(r, o) 0x90000000 | ((((o) >> 12) & 0x3) << 29) | ((((o) >> 12) & 0x1FFFFC) << 3) | ((r) & 0x1F)
-#define _MOVZX(r, i, s) 0xD2800000 | (((s) & 0x30) << 17) | (((i) & 0xFFFF) << 5) | ((r) & 0x1F)
-#define _MOVKX(r, i, s) 0xF2800000 | (((s) & 0x30) << 17) | (((i) & 0xFFFF) << 5) | ((r) & 0x1F)
-#define _BL(a, o) 0x94000000 | (((o) - (a)) >> 2) & 0x3FFFFFF
-#define _NOP() 0xD503201F
-
 #define SM_100_ADR 0x4002B020
-
 PATCHSET_DEF(_secmon_1_patchset,
 	//Patch the relocator to be able to run from SM_100_ADR.
-	{ 0x1E0, _ADRP(0, 0x7C013000 - (SM_100_ADR - 0x40)) },
+	{ 0x1E0, _ADRP(0, 0x7C013000 - _PAGEOFF(SM_100_ADR)) },
 	//Patch package2 decryption and signature/hash checks.
 	{ 0x9F0 + 0xADC, _NOP() }, //Header signature.
 	{ 0x9F0 + 0xB8C, _NOP() }, //Version.

ipl/pkg2.c

@@ -16,6 +16,7 @@
 
 #include <string.h>
 #include "pkg2.h"
+#include "arm64.h"
 #include "heap.h"
 #include "se.h"
 
@@ -25,9 +26,6 @@ extern gfx_con_t gfx_con;
 #define DPRINTF(...) gfx_printf(&gfx_con, __VA_ARGS__)*/
 #define DPRINTF(...)
 
-#define _MOVZX(r, i, s) 0xD2800000 | (((s) & 0x30) << 17) | (((i) & 0xFFFF) << 5) | ((r) & 0x1F)
-#define _NOP() 0xD503201F
-
 // Include kernel patches here, so we can utilize pkg1 id
 PATCHSET_DEF(_kernel_1_patchset,
 	{ 0x3764C, _NOP() },         // Disable SVC verifications

ipl/tui.c

@@ -50,11 +50,11 @@ void *tui_do_menu(gfx_con_t *con, menu_t *menu)
 		gfx_con_setpos(con, menu->x, menu->y);
 		gfx_printf(con, "[%s]\n\n", menu->caption);
 
-		// Skip caption or seperator lines selection
+		// Skip caption or seperator lines selection.
 		while (menu->ents[idx].type == MENT_CAPTION ||
 			menu->ents[idx].type == MENT_CHGLINE)
 		{
-			if (prev_idx <= idx || (!idx && prev_idx == cnt - 1))	
+			if (prev_idx <= idx || (!idx && prev_idx == cnt - 1))
 			{
 				idx++;
 				if (idx > (cnt - 1))
@@ -75,7 +75,7 @@ void *tui_do_menu(gfx_con_t *con, menu_t *menu)
 		}
 		prev_idx = idx;
 
-		// Draw the menu
+		//Draw the menu.
 		for (cnt = 0; menu->ents[cnt].type != MENT_END; cnt++)
 		{
 			if (cnt == idx)

ipl/util.c

@@ -35,3 +35,16 @@ void exec_cfg(u32 *base, const cfg_op_t *ops, u32 num_ops)
 		base[ops[i].off] = ops[i].val;
 }
 
+#define CRC32C_POLY 0x82F63B78
+u32 crc32c(const void *buf, u32 len)
+{
+	const u8 *cbuf = (const u8 *)buf;
+	u32 crc = 0xFFFFFFFF;
+	while (len--)
+	{
+		crc ^= *cbuf++;
+		for (int i = 0; i < 8; i++)
+			crc = crc & 1 ? (crc >> 1) ^ CRC32C_POLY : crc >> 1;
+	}
+	return ~crc;
+}

ipl/util.h

@@ -28,5 +28,6 @@ typedef struct _cfg_op_t
 u32 get_tmr();
 void sleep(u32 ticks);
 void exec_cfg(u32 *base, const cfg_op_t *ops, u32 num_ops);
+u32 crc32c(const void *buf, u32 len);
 
 #endif