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| author | Richard Qin <richard.qin.x@gmail.com> | 2026-01-03 02:19:57 +0800 |
|---|---|---|
| committer | Richard Qin <richard.qin.x@gmail.com> | 2026-01-03 02:19:57 +0800 |
| commit | 210025560c80b48af4875af199f183ad709e3bf0 (patch) | |
| tree | eb11aeb7b641187f207e3b572c5184cf3526b463 /src/boot | |
| parent | bde87490d61135dcaa94d9b1489ff6c39876d169 (diff) | |
| parent | 10614e04929a6d109a5e90524e446b637aaf0c13 (diff) | |
| download | lume-210025560c80b48af4875af199f183ad709e3bf0.tar.gz lume-210025560c80b48af4875af199f183ad709e3bf0.tar.xz | |
Merge pull request #4 from Richard-Qin-001/dev/shell
Rebuilt the system's underlying structure; it is now stable enough to merge.
The system now supports a read-only file system and has a simple shell implemented.
Diffstat (limited to 'src/boot')
| -rw-r--r-- | src/boot/entry.S | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/src/boot/entry.S b/src/boot/entry.S index 924d7d6..6d75bcf 100644 --- a/src/boot/entry.S +++ b/src/boot/entry.S @@ -2,13 +2,29 @@ .global _start _start: - la t0, g_dtb_addr - sd a1, 0(t0) - mv tp, a0 - la sp, stack_top + la t0, stack_base + li t1, 4096 + addi t2, a0, 1 + mul t1, t1, t2 + add sp, t0, t1 + + bnez a0, .L_jump_main + + la t0, sbss + la t1, ebss +.L_clear_bss: + bge t0, t1, .L_save_dtb + sd zero, 0(t0) + addi t0, t0, 8 + j .L_clear_bss + +.L_save_dtb: + la t0, g_dtb_addr + sd a1, 0(t0) +.L_jump_main: call kernel_main .L_park: @@ -19,7 +35,7 @@ _start: .align 4 .global stack_top stack_base: - .space 4096 * 4 + .space 4096 * 8 stack_top: .align 8 |