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Linux_SDK_V1.2.0

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This commit is contained in:
Han Gao
2023-07-30 04:24:38 +08:00
parent 513f62819b
commit 69a3baddbe
2 changed files with 10 additions and 0 deletions
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1
firmware/fw_base.S
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@@ -713,6 +713,7 @@ fw_platform_init:
.globl _trap_handler
.globl _trap_exit
_trap_handler:
sfence.vma zero, t0
TRAP_SAVE_AND_SETUP_SP_T0
TRAP_SAVE_MEPC_MSTATUS 0

9
lib/sbi/sbi_trap.c
View File

@@ -225,6 +225,15 @@ struct sbi_trap_regs *sbi_trap_handler(struct sbi_trap_regs *regs)
if (mcause & (1UL << (__riscv_xlen - 1))) {
mcause &= ~(1UL << (__riscv_xlen - 1));
/*
* DCACHE.CALL:
* | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 |
* 0000000 00001 00000 000 00000 0001011
*/
if ((regs->mepc & 0x7f) == 4)
asm volatile(".long 0x0010000b\n");
switch (mcause) {
case IRQ_M_TIMER:
sbi_timer_process();