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firmware: fw_base.S: Simplify address get

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Simplify address get and remove _link_start _link_end _load_start.

Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Xiang W 2024-03-04 20:15:48 +08:00 • committed by Anup Patel
parent 748bef1f9d
commit fdf5589f04
1 changed files with 11 additions and 33 deletions
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44
firmware/fw_base.S
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@ -63,17 +63,11 @@ _try_lottery:
amoadd.w a6, a7, (a6)
bnez a6, _wait_relocate_copy_done
/* Save load address */
lla t0, _load_start
lla t1, _fw_start
REG_S t1, 0(t0)
#ifdef FW_PIC
/* relocate the global table content */
lla t0, _link_start
REG_L t0, 0(t0)
/* t1 shall has the address of _fw_start */
sub t2, t1, t0
li t0, FW_TEXT_START /* link start */
lla t1, _fw_start /* load start */
sub t2, t1, t0 /* load offset */
lla t0, __rel_dyn_start
lla t1, __rel_dyn_end
beq t0, t1, _relocate_done
@ -96,18 +90,14 @@ _wait_relocate_copy_done:
#else
/* Relocate if load address != link address */
_relocate:
lla t0, _link_start
REG_L t0, 0(t0)
lla t1, _link_end
REG_L t1, 0(t1)
lla t2, _load_start
REG_L t2, 0(t2)
li t0, FW_TEXT_START /* link start */
lla t2, _fw_start /* load start */
lla t3, _fw_reloc_end /* load end */
sub t6, t2, t0 /* load offset */
sub t1, t3, t6 /* link end */
beq t0, t2, _relocate_done
sub t3, t1, t0
add t3, t3, t2
lla t4, _relocate_done
sub t4, t4, t2
add t4, t4, t0
sub t4, t4, t6
blt t2, t0, _relocate_copy_to_upper
_relocate_copy_to_lower:
ble t1, t2, _relocate_copy_to_lower_loop
@ -147,8 +137,7 @@ _relocate_copy_to_upper_loop:
jr t4
_wait_relocate_copy_done:
lla t0, _fw_start
lla t1, _link_start
REG_L t1, 0(t1)
li t1, FW_TEXT_START
beq t0, t1, _wait_for_boot_hart
lla t2, _boot_status
lla t3, _wait_for_boot_hart
@ -173,12 +162,7 @@ _relocate_done:
*/
lla t0, _boot_status
#ifndef FW_PIC
lla t1, _link_start
REG_L t1, 0(t1)
lla t2, _load_start
REG_L t2, 0(t2)
sub t0, t0, t1
add t0, t0, t2
add t0, t0, t6
#endif
li t1, BOOT_STATUS_RELOCATE_DONE
REG_S t1, 0(t0)
@ -502,12 +486,6 @@ _relocate_lottery:
RISCV_PTR 0
_boot_status:
RISCV_PTR 0
_load_start:
RISCV_PTR _fw_start
_link_start:
RISCV_PTR FW_TEXT_START
_link_end:
RISCV_PTR _fw_reloc_end
.section .entry, "ax", %progbits
.align 3