Address Mapping

[gtxzsxxk]

Address Mapping

[gtxzsxxk]

unzip 0x028cb000 0x0204b000
go 0x0204b000

[gtxzsxxk]

unzip 0x028cb000 0x0204afc0
bootm 0x0204afc0 - 0x02048800

[gtxzsxxk]

unzip 0x028cb000 0x0204afc0
bootm 0x0204afc0 - 0x02f9b830

[gtxzsxxk]

mkimage -A riscv -O linux -T kernel -C none -a 0x0204b000 -e 0x0204b000 -d arch/riscv/boot/Image uImage

[gtxzsxxk]

0x0000_0000: ROM START

0x0200_0000: RAM START
290KiB OpenSBI

0x0204_8800: FDT
10KiB

0x0204_B000: U-boot 
512KiB U-boot

0x0210_0000: Kernel Decompress Start

0x020c_B000: Kernel decompress space
8MiB

0x028c_B000: Compressed Kernel at
3MiB

0x02bc_B000: Uboot reloc

0x0300_0000: RAM END 16MiB

unzip 0x028cb000 0x020fffc0
bootm 0x020fffc0 - 0x02f9b830

mkimage -A riscv -O linux -T kernel -C none -a 0x02100000 -e 0x02100000 -d arch/riscv/boot/Image uImage

[gtxzsxxk]

latest

0x0000_0000: ROM START

0x0200_0000: RAM1 START
290KiB OpenSBI

0x0204_8800: FDT
10KiB

0x0204_B000: U-boot 
512KiB U-boot

0x028c_B000: Compressed Kernel at
3MiB

0x02bc_B000: Uboot reloc

0x0300_0000: RAM1 END 16MiB all used 5MiB

0x8000_0000: RAM2 start (Kernel Decompress Start)
10MiB
0x80a0_0000: RAM2 end

unzip 0x028cb000 0x80000000
setenv bootargs "earlycon=sbi"
bootm 0x80000000 - 0x02048800

mkimage -A riscv -O linux -T kernel -C none -a 0x80000000 -e 0x80000000 -d arch/riscv/boot/Image uImage

TODO: move opensbi and u-boot to 0x80000000 space, here we simply open another memory block for linux kernel

[gtxzsxxk]

riscv32-buildroot-linux-gnu-objdump vmlinux > vmlinux.dump -D -S -M no-aliases,numeric

[gtxzsxxk]

We must start at 0x8000_0000. Here

0x0000_0000: ROM START

0x8000_0000: U-boot, (Kernel Decompress Start)
512KiB U-boot

0x80ab_5000: Compressed Kernel at
3MiB

0x80dc_0000:  OpenSBI
290KiB

0x80df_d800: FDT
10KiB

0x80e0_0000: Uboot reloc
2MiB

0x8100_0000: RAM end 16MiB

unzip 0x80ab5000 0x80000000
setenv bootargs "earlycon=sbi"
bootm 0x80000000 - 0x80dfd800

mkimage -A riscv -O linux -T kernel -C none -a 0x80000000 -e 0x80000000 -d arch/riscv/boot/Image uImage

Available memory for kernel: 13MiB

[gtxzsxxk]

--addr=0x80dc0000
--exec=fw_jump.bin
--with=0x80000000#u-boot.bin
--with=0x80dfd800#u-boot.dtb
--with=0x80ab5000#uImage.gz

[gtxzsxxk]

We must start at 0x8000_0000. Here

Enlarge everything to 32MiB

0x0000_0000: ROM START

0x8000_0000: U-boot, (Kernel Decompress Start)
512KiB U-boot

0x80aa_0000: Compressed Kernel at
3MiB

0x80da_0000: Uboot reloc
2MiB

0x80fa_0000:  OpenSBI
384KiB

0x80ff_d800: FDT
10KiB

0x8100_0000: RAM end 16MiB

unzip 0x80aa0000 0x80000000
setenv bootargs "earlycon=sbi"
bootm 0x80000000 - 0x80ffd800

mkimage -A riscv -O linux -T kernel -C none -a 0x80000000 -e 0x80000000 -d arch/riscv/boot/Image uImage

Available memory for kernel: 13.625MiB

--addr=0x80fa0000
--exec=fw_jump.bin
--with=0x80000000#u-boot.bin
--with=0x80ffd800#u-boot.dtb
--with=0x80aa0000#uImage.gz

[gtxzsxxk]

unzip 0x80aa0000 0x80000000
setenv bootargs "earlycon=sbi,null console=ttyS0,115200"
bootm 0x80000000 - 0x80ffd800

[gtxzsxxk]

setenv bootargs "earlycon=uart8250,mmio32,0x12500000,115200n8 console=ttyS0,115200n8"

[gtxzsxxk]

setenv bootargs "console=tty0 console=ttyS0,115200"

[gtxzsxxk]

setenv bootargs "console=ttyS0,115200"

[gtxzsxxk]

Latest

0x0000_0000: ROM START

0x8000_0000: U-boot, (Kernel Decompress Start)
512KiB U-boot

0x8099_0000: Compressed Kernel at
4.1MiB

0x80da_0000: Uboot reloc
2MiB

0x80fa_0000:  OpenSBI
384KiB

0x80ff_d800: FDT
10KiB

0x8100_0000: RAM end 16MiB

unzip 0x80990000 0x80000000
setenv bootargs earlycon=sbi,null console=ttyS0,115200
bootm 0x80000000 - 0x80ffd800

mkimage -A riscv -O linux -T kernel -C none -a 0x80000000 -e 0x80000000 -d arch/riscv/boot/Image uImage

Available memory for kernel: 13.625MiB

--addr=0x80fa0000
--exec=fw_jump.bin
--with=0x80000000#u-boot.bin
--with=0x80ffd800#u-boot.dtb
--with=0x80990000#uImage.gz

[gtxzsxxk]

setenv bootargs earlycon=sbi,null console=ttyS0,115200 root=/dev/ram0