|
@@ -22,7 +22,7 @@ _start:
|
|
|
* Jump to warm-boot if this is not the first core booting,
|
|
|
* that is, for mhartid != 0
|
|
|
*/
|
|
|
- csrr a6, mhartid
|
|
|
+ csrr a6, CSR_MHARTID
|
|
|
blt zero, a6, _wait_for_boot_hart
|
|
|
|
|
|
/* Zero-out BSS */
|
|
@@ -126,15 +126,15 @@ _wait_for_boot_hart:
|
|
|
|
|
|
_start_warm:
|
|
|
/* Disable and clear all interrupts */
|
|
|
- csrw mie, zero
|
|
|
- csrw mip, zero
|
|
|
+ csrw CSR_MIE, zero
|
|
|
+ csrw CSR_MIP, zero
|
|
|
|
|
|
/* Preload per-HART details
|
|
|
* s6 -> HART ID
|
|
|
* s7 -> HART Count
|
|
|
* s8 -> HART Stack Size
|
|
|
*/
|
|
|
- csrr s6, mhartid
|
|
|
+ csrr s6, CSR_MHARTID
|
|
|
la a4, platform
|
|
|
#if __riscv_xlen == 64
|
|
|
lwu s7, SBI_PLATFORM_HART_COUNT_OFFSET(a4)
|
|
@@ -145,7 +145,7 @@ _start_warm:
|
|
|
#endif
|
|
|
|
|
|
/* HART ID should be within expected limit */
|
|
|
- csrr s6, mhartid
|
|
|
+ csrr s6, CSR_MHARTID
|
|
|
bge s6, s7, _start_hang
|
|
|
|
|
|
/* Setup scratch space */
|
|
@@ -156,7 +156,7 @@ _start_warm:
|
|
|
sub tp, tp, a5
|
|
|
li a5, SBI_SCRATCH_SIZE
|
|
|
sub tp, tp, a5
|
|
|
- csrw mscratch, tp
|
|
|
+ csrw CSR_MSCRATCH, tp
|
|
|
|
|
|
/* Initialize scratch space */
|
|
|
la a4, _fw_start
|
|
@@ -187,11 +187,11 @@ _start_warm:
|
|
|
|
|
|
/* Setup trap handler */
|
|
|
la a4, _trap_handler
|
|
|
- csrw mtvec, a4
|
|
|
+ csrw CSR_MTVEC, a4
|
|
|
|
|
|
/* Initialize SBI runtime */
|
|
|
- csrr a0, mscratch
|
|
|
- call sbi_init
|
|
|
+ csrr a0, CSR_MSCRATCH
|
|
|
+ Call sbi_init
|
|
|
|
|
|
/* We don't expect to reach here hence just hang */
|
|
|
j _start_hang
|
|
@@ -243,7 +243,7 @@ _start_hang:
|
|
|
.globl _trap_handler
|
|
|
_trap_handler:
|
|
|
/* Swap SP and MSCRATCH */
|
|
|
- csrrw sp, mscratch, sp
|
|
|
+ csrrw sp, CSR_MSCRATCH, sp
|
|
|
|
|
|
/* Setup exception stack */
|
|
|
add sp, sp, -(SBI_TRAP_REGS_SIZE)
|
|
@@ -256,12 +256,12 @@ _trap_handler:
|
|
|
|
|
|
/* Save original SP and restore MSCRATCH */
|
|
|
add t0, sp, SBI_TRAP_REGS_SIZE
|
|
|
- csrrw t0, mscratch, t0
|
|
|
+ csrrw t0, CSR_MSCRATCH, t0
|
|
|
REG_S t0, SBI_TRAP_REGS_OFFSET(sp)(sp)
|
|
|
|
|
|
/* Save MEPC and MSTATUS CSRs */
|
|
|
- csrr t0, mepc
|
|
|
- csrr t1, mstatus
|
|
|
+ csrr t0, CSR_MEPC
|
|
|
+ csrr t1, CSR_MSTATUS
|
|
|
|
|
|
/*
|
|
|
* Note: Fast path trap handling can be done here
|
|
@@ -305,7 +305,7 @@ _trap_handler:
|
|
|
|
|
|
/* Call C routine */
|
|
|
add a0, sp, zero
|
|
|
- csrr a1, mscratch
|
|
|
+ csrr a1, CSR_MSCRATCH
|
|
|
call sbi_trap_handler
|
|
|
|
|
|
/* Restore all general regisers except SP, RA, T0, T1, T2, and T3 */
|
|
@@ -348,8 +348,8 @@ _trap_handler:
|
|
|
*/
|
|
|
|
|
|
/* Restore MEPC and MSTATUS CSRs */
|
|
|
- csrw mepc, t0
|
|
|
- csrw mstatus, t1
|
|
|
+ csrw CSR_MEPC, t0
|
|
|
+ csrw CSR_MSTATUS, t1
|
|
|
|
|
|
/* Restore RA, T0, T1, and T2 */
|
|
|
REG_L ra, SBI_TRAP_REGS_OFFSET(ra)(sp)
|