mirror of
https://github.com/PiMaker/rvc.git
synced 2024-11-21 19:40:08 +00:00
add linux kernel, custom patches and update Makefile
This commit is contained in:
Stefan
parent
9c936f211c
commit
81e95a6791
70
Makefile
70
Makefile
@ -10,13 +10,22 @@ DEPS := $(OBJS:.o=.d)
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INC_DIRS := $(shell find $(SRC_DIRS) -type d)
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INC_FLAGS := $(addprefix -I,$(INC_DIRS))
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Q=$(CURDIR)/buildroot-2021.05/output/host/bin/riscv32-buildroot-linux-gnu-
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CFLAGS=-g
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$(TARGET): $(OBJS)
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$(CC) $(LDFLAGS) -I./elfy/elfy.h $(OBJS) -o $@ $(LOADLIBES) $(LDLIBS) -L./elfy/target/release/ -Wl,--no-as-needed -ldl -lpthread -lelfy
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.PHONY: clean
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clean:
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$(RM) $(TARGET) $(OBJS) $(DEPS) fw_payload.*
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$(RM) $(TARGET) $(OBJS) $(DEPS)
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.PHONY: distclean
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distclean: clean
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$(RM) $(TARGET) $(OBJS) $(DEPS) *_payload.*
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$(MAKE) -C opensbi clean
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$(MAKE) -C linux clean
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-include $(DEPS)
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@ -24,28 +33,67 @@ clean:
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dts.dtb: dts.dts
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dtc -o $@ $<
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OPENSBI_BUILD="opensbi/build/platform/generic/firmware"
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PAYLOAD="rust_payload/target/riscv32ima-unknown-none-elf/release/rust_payload.bin"
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OPENSBI_BUILD=opensbi/build/platform/generic/firmware
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PAYLOAD=rust_payload/target/riscv32ima-unknown-none-elf/release/rust_payload.bin
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LINUX_PAYLOAD=linux/arch/riscv/boot/Image
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BUILDROOT_MARKER=buildroot-2021.05/build.marker
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$(BUILDROOT_MARKER):
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$(MAKE) -C buildroot-2021.05 make
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cd buildroot-2021.05 && cp init output/target/ && cp pi.js output/target/
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$(MAKE) -C buildroot-2021.05 make
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touch $@
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$(PAYLOAD): $(shell find rust_payload/src -type f)
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cd rust_payload; \
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cargo +riscv32ima rustc -Zbuild-std --release --target "riscv32ima-unknown-none-elf" -- -Clink-arg=-Tlinker.ld -Clinker=riscv32-elf-ld
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riscv32-elf-objcopy -O binary \
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cargo +riscv32ima rustc -Zbuild-std --release --target "riscv32ima-unknown-none-elf" -- -Clink-arg=-Tlinker.ld -Clinker=$(Q)ld
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$(Q)objcopy -O binary \
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rust_payload/target/riscv32ima-unknown-none-elf/release/rust_payload $(PAYLOAD)
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fw_payload.bin: fw_payload.elf
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cp $(OPENSBI_BUILD)/fw_payload.bin .
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fw_payload.elf: $(PAYLOAD)
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env CROSS_COMPILE=riscv64-elf- \
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rust_payload.bin: rust_payload.elf
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cp $(OPENSBI_BUILD)/fw_payload.bin ./rust_payload.bin
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rust_payload.elf: $(PAYLOAD) $(BUILDROOT_MARKER)
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$(MAKE) -C opensbi clean
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env CROSS_COMPILE=$(Q) \
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PLATFORM=generic \
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PLATFORM_RISCV_XLEN=32 \
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PLATFORM_RISCV_ISA=rv32ima \
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PLATFORM_RISCV_ABI=ilp32 \
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FW_PAYLOAD_PATH=../$(PAYLOAD) \
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FW_PIC=n \
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ELFFLAGS=-L/usr/lib/gcc/riscv64-elf/10.2.0/rv32im/ilp32 \
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$(MAKE) -C opensbi all
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cp $(OPENSBI_BUILD)/fw_payload.elf .
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cp $(OPENSBI_BUILD)/fw_payload.elf ./rust_payload.elf
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.PHONY: $(LINUX_PAYLOAD)
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$(LINUX_PAYLOAD): linux $(BUILDROOT_MARKER)
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cd linux && (git am ../linux-_pi_-patches-for-rvc.patch || true)
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cd linux && \
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env CROSS_COMPILE=$(Q) \
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CFLAGS="-march=rv32ima -mabi=ilp32" \
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LDFLAGS="-march=rv32ima -mabi=ilp32" \
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ARCH=riscv \
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KCONFIG_ALLCONFIG=../linux.config \
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make allnoconfig
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cd linux && \
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env CROSS_COMPILE=$(Q) \
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CFLAGS="-march=rv32ima -mabi=ilp32" \
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LDFLAGS="-march=rv32ima -mabi=ilp32" \
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ARCH=riscv \
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intercept-build make -j$(shell nproc)
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linux_payload.bin: linux_payload.elf
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cp $(OPENSBI_BUILD)/fw_payload.bin ./linux_payload.bin
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linux_payload.elf: $(LINUX_PAYLOAD) $(BUILDROOT_MARKER)
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$(MAKE) -C opensbi clean
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env CROSS_COMPILE=$(Q) \
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PLATFORM=generic \
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PLATFORM_RISCV_XLEN=32 \
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PLATFORM_RISCV_ISA=rv32ima \
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PLATFORM_RISCV_ABI=ilp32 \
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FW_PAYLOAD_PATH=../$(LINUX_PAYLOAD) \
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FW_PIC=n \
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$(MAKE) -C opensbi all
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cp $(OPENSBI_BUILD)/fw_payload.elf ./linux_payload.elf
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.PHONY: run
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run: fw_payload.bin $(TARGET) dts.dtb
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128
linux-_pi_-patches-for-rvc.patch
Normal file
128
linux-_pi_-patches-for-rvc.patch
Normal file
@ -0,0 +1,128 @@
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From fbba62aff7a727723aa75715e1d1838b484ba842 Mon Sep 17 00:00:00 2001
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From: Stefan <stefan@pimaker.at>
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Date: Sun, 1 Aug 2021 20:58:20 +0200
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Subject: [PATCH] _pi_ patches for rvc
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* use MEMOP extension for faster memcpy (disabled atm)
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* don't poison init kernel area, we don't care about security
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* print more messages about initramfs loading, since otherwise it just
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looks like it got stuck
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Signed-off-by: Stefan <stefan@pimaker.at>
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---
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arch/riscv/lib/memcpy.S | 13 +++++++++++++
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include/linux/mm.h | 2 +-
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init/initramfs.c | 19 +++++++++++++++++--
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3 files changed, 31 insertions(+), 3 deletions(-)
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diff --git a/arch/riscv/lib/memcpy.S b/arch/riscv/lib/memcpy.S
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index 51ab716253fa..67636579413d 100644
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--- a/arch/riscv/lib/memcpy.S
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+++ b/arch/riscv/lib/memcpy.S
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@@ -41,6 +41,18 @@ WEAK(memcpy)
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beqz a4, 4f
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add a3, a1, a4
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3:
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+ #lla t0, 10f
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+ #li t2, 1025
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+ #bltu a2, t2, 11f
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+
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+ #csrw 0x0b1, a1 # src
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+ #csrw 0x0b2, t6 # dst
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+ #csrw 0x0b3, a2 # n
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+ #li t2, 0x1
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+ #csrw 0x0b0, t2 # memcpy
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+ #j 10f
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+
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+11:
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REG_L a4, 0(a1)
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REG_L a5, SZREG(a1)
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REG_L a6, 2*SZREG(a1)
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@@ -76,6 +88,7 @@ WEAK(memcpy)
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REG_S t1, 15*SZREG(t6)
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addi t6, t6, 16*SZREG
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bltu a1, a3, 3b
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+10:
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andi a2, a2, (16*SZREG)-1 /* Update count */
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4:
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diff --git a/include/linux/mm.h b/include/linux/mm.h
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index 9afb8998e7e5..881f1c1cf7ea 100644
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--- a/include/linux/mm.h
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+++ b/include/linux/mm.h
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@@ -2420,7 +2420,7 @@ static inline unsigned long free_initmem_default(int poison)
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extern char __init_begin[], __init_end[];
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return free_reserved_area(&__init_begin, &__init_end,
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- poison, "unused kernel");
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+ 0x1ff, "unused kernel");
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}
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static inline unsigned long get_num_physpages(void)
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diff --git a/init/initramfs.c b/init/initramfs.c
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index af27abc59643..1124f0cf6c8f 100644
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--- a/init/initramfs.c
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+++ b/init/initramfs.c
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@@ -43,8 +43,10 @@ static ssize_t __init xwrite(struct file *file, const char *p, size_t count,
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static __initdata char *message;
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static void __init error(char *x)
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{
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- if (!message)
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+ if (!message) {
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message = x;
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+ pr_err("[_pi_] initramfs error: %s\n", x);
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+ }
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}
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static void panic_show_mem(const char *fmt, ...)
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@@ -467,6 +469,9 @@ static char * __init unpack_to_rootfs(char *buf, unsigned long len)
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const char *compress_name;
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static __initdata char msg_buf[64];
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+ unsigned long len_orig = len;
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+ unsigned long len_percent = 0, len_percent_tmp;
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+
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header_buf = kmalloc(110, GFP_KERNEL);
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symlink_buf = kmalloc(PATH_MAX + N_ALIGN(PATH_MAX) + 1, GFP_KERNEL);
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name_buf = kmalloc(N_ALIGN(PATH_MAX), GFP_KERNEL);
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@@ -474,11 +479,20 @@ static char * __init unpack_to_rootfs(char *buf, unsigned long len)
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if (!header_buf || !symlink_buf || !name_buf)
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panic_show_mem("can't allocate buffers");
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+ pr_info("[_pi_] loading initramfs now, this may take a while...\n");
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+
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state = Start;
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this_header = 0;
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message = NULL;
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while (!message && len) {
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loff_t saved_offset = this_header;
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+
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+ len_percent_tmp = (len * 10) / len_orig;
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+ if (len_percent_tmp != len_percent) {
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+ len_percent = len_percent_tmp;
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+ pr_info("[_pi_] initramfs: %lu0%% done\n", 10 - len_percent);
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+ }
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+
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if (*buf == '0' && !(this_header & 3)) {
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state = Start;
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written = write_buffer(buf, len);
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@@ -494,7 +508,7 @@ static char * __init unpack_to_rootfs(char *buf, unsigned long len)
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}
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this_header = 0;
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decompress = decompress_method(buf, len, &compress_name);
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- pr_debug("Detected %s compressed data\n", compress_name);
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+ pr_info("Detected %s compressed data\n", compress_name);
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if (decompress) {
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int res = decompress(buf, len, NULL, flush_buffer, NULL,
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&my_inptr, error);
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@@ -519,6 +533,7 @@ static char * __init unpack_to_rootfs(char *buf, unsigned long len)
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kfree(name_buf);
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kfree(symlink_buf);
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kfree(header_buf);
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+ pr_info("[_pi_] unpack_to_rootfs retval: %s\n", (message && *message) ? message : "<success>");
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return message;
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}
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--
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2.32.0
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114
linux.config
Normal file
114
linux.config
Normal file
@ -0,0 +1,114 @@
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CONFIG_DEFAULT_HOSTNAME="rvc"
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CONFIG_LOCALVERSION="-rvc"
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CONFIG_RD_GZIP=n
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CONFIG_RD_BZIP2=n
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CONFIG_RD_LZMA=n
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CONFIG_RD_XZ=n
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CONFIG_RD_LZO=n
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CONFIG_RD_LZ4=n
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CONFIG_RD_ZSTD=n
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CONFIG_INITRAMFS_COMPRESSION_GZIP=n
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CONFIG_INITRAMFS_COMPRESSION_BZIP2=n
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CONFIG_INITRAMFS_COMPRESSION_LZMA=n
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CONFIG_INITRAMFS_COMPRESSION_XZ=n
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CONFIG_INITRAMFS_COMPRESSION_LZO=n
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CONFIG_INITRAMFS_COMPRESSION_LZ4=n
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CONFIG_INITRAMFS_COMPRESSION_ZSTD=n
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CONFIG_INITRAMFS_COMPRESSION_NONE=y
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CONFIG_INITRAMFS_SOURCE="../buildroot-2021.05/output/images/rootfs.cpio"
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CONFIG_BLK_DEV=y
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CONFIG_BLK_DEV_INITRD=y
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CONFIG_DEBUG=y
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CONFIG_DEBUG_KERNEL=y
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CONFIG_DEBUG_INFO=y
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CONFIG_32BIT=y
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CONFIG_ARCH_RV32I=y
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CONFIG_RISCV_ISA_C=n
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CONFIG_MMU=y
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CONFIG_RISCV_M_MODE=n
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CONFIG_RISCV_SBI=y
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CONFIG_SMP=n
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CONFIG_BROKEN_ON_SMP=y
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CONFIG_FPU=n
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CONFIG_NUMA=n
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CONFIG_EFI=n
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CONFIG_MULTIUSER=n
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CONFIG_PRINTK=y
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CONFIG_PRINTK_TIME=y
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CONFIG_EARLY_PRINTK=y
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CONFIG_RISCV_SBI_V01=y
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CONFIG_SERIAL_EARLYCON_RISCV_SBI=y
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CONFIG_HVC_RISCV_SBI=y
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CONFIG_BINFMT_ELF=y
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CONFIG_ELFCORE=y
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CONFIG_BINFMT_SCRIPT=y
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CONFIG_BINFMT_FLAT=y
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CONFIG_BINFMT_MISC=y
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CONFIG_TTY=y
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CONFIG_VT=y
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CONFIG_VT_CONSOLE=y
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CONFIG_VT_HW_CONSOLE_BINDING=y
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CONFIG_SERIAL_CORE=y
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CONFIG_SERIAL_CORE_CONSOLE=y
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CONFIG_SERIAL_8250=n
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CONFIG_SERIAL_8250_CONSOLE=n
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CONFIG_SERIAL_OF_PLATFORM=y
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CONFIG_SERIAL_EARLYCON=y
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CONFIG_CONSOLE_POLL=n
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CONFIG_UNIX98_PTYS=n
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CONFIG_LEGACY_PTYS=n
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CONFIG_RISCV_TIMER=y
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CONFIG_PREEMPT_NONE=y
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CONFIG_DTC=y
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CONFIG_OF=y
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CONFIG_OF_FLATTREE=y
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CONFIG_OF_EARLY_FLATTREE=y
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CONFIG_OF_KOBJ=y
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CONFIG_OF_ADDRESS=y
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CONFIG_OF_IRQ=y
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CONFIG_OF_RESERVED_MEM=y
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CONFIG_RAMFS=y
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CONFIG_TMPFS=y
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CONFIG_DEVTMPFS=y
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CONFIG_DEVTMPFS_MOUNT=y
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CONFIG_PROC_FS=y
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CONFIG_SYSFS=y
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CONFIG_EXPORTFS=n
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CONFIG_MSDOS_PARTITION=n
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CONFIG_EFI_PARTITION=n
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CONFIG_FW_LOADER=n
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CONFIG_SCSI_MOD=n
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CONFIG_BLK_DEV_BSG=n
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CONFIG_MQ_IOSCHED_KYBER=n
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CONFIG_MQ_IOSCHED_DEADLINE=n
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CONFIG_IO_WQ=n
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CONFIG_SERIAL_8250_16550A_VARIANTS=n
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CONFIG_SERIAL_8250_NR_UARTS=1
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CONFIG_SERIAL_8250_RUNTIME_UARTS=1
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CONFIG_VGA_CONSOLE=n
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CONFIG_HID=n
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CONFIG_USB_SUPPORT=n
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CONFIG_EDAC_SUPPORT=n
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CONFIG_IOMMU_SUPPORT=n
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CONFIG_HAVE_EBPF_JIT=n
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CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=n
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CONFIG_DEFAULT_SECURITY_DAC=n
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CONFIG_PCI=n
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CONFIG_USB=n
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CONFIG_HAVE_SYSCALL_TRACEPOINTS=n
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CONFIG_TRACING_SUPPORT=n
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CONFIG_FTRACE=n
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