commit 6b4830e3621e36b27be34ff8b1a8785799299873 Author: ivoszbg Date: Sun Jun 12 14:37:02 2022 +0300 .: Initiate the project Signed-off-by: Ivaylo Ivanov diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..52d8cb9 --- /dev/null +++ b/.gitignore @@ -0,0 +1,6 @@ +uniLoader +*.o +asm/*.o +asm/linker.lds +board/*/*.o +soc/*/*.o diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..a2eb7fe --- /dev/null +++ b/LICENSE @@ -0,0 +1,325 @@ +The GNU General Public License (GPL-2.0) +Version 2, June 1991 +Copyright (C) 1989, 1991 Free Software Foundation, Inc. +59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +Everyone is permitted to copy and distribute verbatim copies +of this license document, but changing it is not allowed. + +Preamble + +The licenses for most software are designed to take away your freedom to share +and change it. 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This is + free software, and you are welcome to redistribute it under certain + conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may be +called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + signature of Ty Coon, 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..289abb3 --- /dev/null +++ b/Makefile @@ -0,0 +1,62 @@ +# SPDX-License-Identifier: GPL-2.0 + +# +# Defaut values +# +KERNEL_PATH?=blob/Image +DTB_PATH?=blob/dtb + +# +# Compiler defines +# +CCPREFIX?=aarch64-linux-gnu- +CC=$(CCPREFIX)gcc +CPP=$(CCPREFIX)cpp +LD=$(CCPREFIX)ld +OBJCPY=$(CCPREFIX)objcopy + +# +# Compiler flags +# +CFLAGS = -march=armv8-a -Wall -nodefaultlibs \ + -nostdlib -nostartfiles -fno-builtin \ + -nostdinc -Wstrict-prototypes -std=gnu11 \ + -Wno-main -I'./include' + +# +# Split BOARD definition into 2 parts - manufacturer and codename +# +split_board := $(subst -, ,$(BOARD:%=%)) +board_manu := $(word 1,$(split_board)) +board_codename := $(word 2,$(split_board)) + +OBJ = main.o \ + asm/Start.o + +.PHONY: clean + +# +# Syntax: +# name: dependencies-in-order +# action-to-do +# +uniLoader: uniLoader.o + $(OBJCPY) -O binary $< $@ + +uniLoader.o: copy-board-config $(OBJ) asm/linker.lds build-board build-soc + $(LD) $(OBJ) board.o soc.o -o $@ --script=asm/linker.lds + +asm/linker.lds: asm/linker.lds.S $(KERNEL_PATH) + $(CPP) $< -DKERNEL_PATH=$(KERNEL_PATH) -DDTB_PATH=$(DTB_PATH) -P -o $@ + +build-board: + cd board && make + +build-soc: + cd soc && make + +copy-board-config: + cp include/board/board-$(board_codename).h include/board-config.h + +clean: + -rm *.o asm/linker.lds asm/Start.o uniLoader board/*/*.o include/board-config.h soc/*/*.o diff --git a/README.md b/README.md new file mode 100644 index 0000000..3db022b --- /dev/null +++ b/README.md @@ -0,0 +1,25 @@ +# uniLoader +A simple secondary bootloader that is capable of loading Linux for Android and iOS based devices. + +# Building +1. Install aarch64-linux-gnu +2. ```git clone https://github.com/ivoszbg/uniLoader``` +3. ```cd uniLoader``` +4. Place your kernel and device tree blobs under blob/ +5. ```make BOARD=(oem)-(board-codename) SOC=(device-soc)```
+# Building example +```sudo apt install aarch64-linux-gnu```
+```git clone https://github.com/ivoszbg/uniLoader```
+```cd uniLoader```
+```cp /home/user/linux/arch/arm64/boot/Image blob/Image```
+```cp /home/user/linux/arch/arm64/boot/dts/exynos/exynos8895-dreamlte.dtb blob/dtb```
+```make BOARD=samsung-dreamlte SOC=exynos8895``` +# Usage +For Apple devices: Load the generated **uniLoader** binary via PongoOs (TODO: allow loading **instead** of PongoOs)

+For Android devices: Replace the linux kernel in your *boot.img* with the **uniLoader** binary +# Credits +VDavid003 - for his sboot wrapper
+Quack723 - Contributor
+Ivoszbg - Making this huge mess of a bootloader +# License +This project is licensed under GPL2. diff --git a/asm/Start.S b/asm/Start.S new file mode 100644 index 0000000..316d0a6 --- /dev/null +++ b/asm/Start.S @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2022, Ivaylo Ivanov + */ + + adr x0, dtb + adr x1, kernel + b main + +.global load_kernel +load_kernel: + br x4 diff --git a/asm/linker.lds.S b/asm/linker.lds.S new file mode 100644 index 0000000..8255500 --- /dev/null +++ b/asm/linker.lds.S @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2022, Ivaylo Ivanov + */ + +OUTPUT_FORMAT("elf64-littleaarch64") +OUTPUT_ARCH(aarch64) +TARGET(binary) + +INPUT(KERNEL_PATH) +INPUT(DTB_PATH) + +SECTIONS +{ + .boot : { + asm/Start.o + } + + .dtb ALIGN(0x1000) : { + dtb = .; + DTB_PATH + } + + .kernel ALIGN(0x1000) : { + kernel = .; + KERNEL_PATH + } +} diff --git a/blob/README b/blob/README new file mode 100644 index 0000000..4b12017 --- /dev/null +++ b/blob/README @@ -0,0 +1 @@ +Folder for binary blobs, like kernel image and device tree. diff --git a/board/Makefile b/board/Makefile new file mode 100644 index 0000000..5f912cf --- /dev/null +++ b/board/Makefile @@ -0,0 +1,29 @@ +# SPDX-License-Identifier: GPL-2.0 + +# +# Compiler defines +# +CCPREFIX?=aarch64-linux-gnu- +CC=$(CCPREFIX)gcc +CPP=$(CCPREFIX)cpp +LD=$(CCPREFIX)ld +OBJCPY=$(CCPREFIX)objcopy + +# +# Compiler flags +# +CFLAGS = -march=armv8-a -Wall -nodefaultlibs \ + -nostdlib -nostartfiles -fno-builtin \ + -nostdinc -Wstrict-prototypes -std=gnu11 -I'../include' + +# +# Split BOARD definition into 2 parts - manufacturer and codename +# +split_board := $(subst -, ,$(BOARD:%=%)) +board_manu := $(word 1,$(split_board)) +board_codename := $(word 2,$(split_board)) + +all: $(board_manu)/board-$(board_codename).o copy-board + +copy-board: + cp $(board_manu)/board-$(board_codename).o ../board.o diff --git a/board/samsung/board-dreamlte.c b/board/samsung/board-dreamlte.c new file mode 100644 index 0000000..d720a9d --- /dev/null +++ b/board/samsung/board-dreamlte.c @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2022, Ivaylo Ivanov + */ + +#include + +void board_init(void) { + +} diff --git a/include/.gitignore b/include/.gitignore new file mode 100644 index 0000000..335b92d --- /dev/null +++ b/include/.gitignore @@ -0,0 +1 @@ +board-config.h diff --git a/include/board/board-dreamlte.h b/include/board/board-dreamlte.h new file mode 100644 index 0000000..f8466b9 --- /dev/null +++ b/include/board/board-dreamlte.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2022, Ivaylo Ivanov + */ + +#ifndef BOARD_DREAMLTE_H_ /* Include guard */ +#define BOARD_DREAMLTE_H_ + +#define PAYLOAD_ENTRY 0x90000000 +#define PAYLOAD_SIZE 0x2000000 + +#endif // BOARD_DREAMLTE_H_ diff --git a/include/main.h b/include/main.h new file mode 100644 index 0000000..4d9241b --- /dev/null +++ b/include/main.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2022, Ivaylo Ivanov + */ + +#ifndef MAIN_H_ /* Include guard */ +#define MAIN_H_ + +extern void load_kernel(void* dtb, void* x1, void* x2, void* x3, void* kernel); +extern void soc_init(void); +extern void board_init(void); + +/* Define our own 128 bit memcpy */ +void memcpy(void *dest, void *src, int size) +{ + unsigned __int128 *src2 = src; + unsigned __int128 *dest2 = dest; + + for (int i=0; i + */ + +#ifndef EXYNOS8895_H_ /* Include guard */ +#define EXYNOS8895_H_ + +#define DECON_F_BASE 0x12860000 +#define HW_SW_TRIG_CONTROL 0x70 + +#endif // EXYNOS8895_H_ diff --git a/main.c b/main.c new file mode 100644 index 0000000..17a0cf0 --- /dev/null +++ b/main.c @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2022, Ivaylo Ivanov + */ + +#include +/* Device specific board config, copied in runtime */ +#include + +void main(void* dt, void* kernel) { + /* Initialize SoC and Board specific peripherals/quirks */ + soc_init(); + board_init(); + + /* Copy kernel to memory and boot */ + memcpy((void*)PAYLOAD_ENTRY, kernel, PAYLOAD_SIZE); + load_kernel(dt, 0, 0, 0, (void*)PAYLOAD_ENTRY); +} diff --git a/soc/Makefile b/soc/Makefile new file mode 100644 index 0000000..7da8f3f --- /dev/null +++ b/soc/Makefile @@ -0,0 +1,38 @@ +# SPDX-License-Identifier: GPL-2.0 + +# +# Compiler defines +# +CCPREFIX?=aarch64-linux-gnu- +CC=$(CCPREFIX)gcc +CPP=$(CCPREFIX)cpp +LD=$(CCPREFIX)ld +OBJCPY=$(CCPREFIX)objcopy + +# +# Compiler flags +# +CFLAGS = -march=armv8-a -Wall -nodefaultlibs \ + -nostdlib -nostartfiles -fno-builtin \ + -nostdinc -Wstrict-prototypes -std=gnu11 -I'../include' + +# +# Split BOARD definition into 2 parts - manufacturer and codename +# +split_board := $(subst -, ,$(BOARD:%=%)) +board_manu := $(word 1,$(split_board)) +board_codename := $(word 2,$(split_board)) + +# +# Supported SoCs +# + +# Exynos +ifeq ($(SOC),exynos8895) +brand_name=exynos +endif + +all: $(brand_name)/$(SOC).o copy-soc + +copy-soc: + cp $(brand_name)/$(SOC).o ../soc.o diff --git a/soc/exynos/exynos8895.c b/soc/exynos/exynos8895.c new file mode 100644 index 0000000..324d4a3 --- /dev/null +++ b/soc/exynos/exynos8895.c @@ -0,0 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2022, Ivaylo Ivanov + */ + +#include + +void soc_init(void) { + /* Allow framebuffer to be written to */ + *(int*) (DECON_F_BASE + HW_SW_TRIG_CONTROL) = 0x1281; +}