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Diffstat (limited to 'src/arch/riscv/payload.S')
| -rw-r--r-- | src/arch/riscv/payload.S | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/arch/riscv/payload.S b/src/arch/riscv/payload.S new file mode 100644 index 0000000000..3261a80c2b --- /dev/null +++ b/src/arch/riscv/payload.S @@ -0,0 +1,28 @@ +/* + * This file is part of the coreboot project. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + + .global riscvpayload +riscvpayload: + /* Jump to a0 in S-mode */ + mv t0,a0 + csrw mepc, t0 + csrr t0, mstatus + li t1, ~(3<<11) + and t0, t0, t1 + li t2, (1<<11) + or t0, t0, t2 + csrw mstatus, t0 + + // We're still in toolchain no mans land. + .word 0x30200073 + //mret |