diff options
| author | Clifford Wolf <clifford@clifford.at> | 2017-09-15 16:31:37 +0200 |
|---|---|---|
| committer | Clifford Wolf <clifford@clifford.at> | 2017-09-15 16:31:37 +0200 |
| commit | 1c8266869ad5179e99f5c063ad203c80f37b65c5 (patch) | |
| tree | b64f69290558909ae500673bfa27521c4288131c /picosoc/start.s | |
| parent | a412d3ea69618960d6cfd900b5b4e99a9161992f (diff) | |
| parent | 797c21e95cc80e985801ef0a08b3bb734e2118f4 (diff) | |
| download | picorv32-1c8266869ad5179e99f5c063ad203c80f37b65c5.tar.gz picorv32-1c8266869ad5179e99f5c063ad203c80f37b65c5.zip | |
Merge branch 'picosoc'
Diffstat (limited to 'picosoc/start.s')
| -rw-r--r-- | picosoc/start.s | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/picosoc/start.s b/picosoc/start.s new file mode 100644 index 0000000..47312d8 --- /dev/null +++ b/picosoc/start.s @@ -0,0 +1,61 @@ +.section .text + +start: +addi x1, zero, 0 +addi x2, zero, 0 +addi x3, zero, 0 +addi x4, zero, 0 +addi x5, zero, 0 +addi x6, zero, 0 +addi x7, zero, 0 +addi x8, zero, 0 +addi x9, zero, 0 +addi x10, zero, 0 +addi x11, zero, 0 +addi x12, zero, 0 +addi x13, zero, 0 +addi x14, zero, 0 +addi x15, zero, 0 +addi x16, zero, 0 +addi x17, zero, 0 +addi x18, zero, 0 +addi x19, zero, 0 +addi x20, zero, 0 +addi x21, zero, 0 +addi x22, zero, 0 +addi x23, zero, 0 +addi x24, zero, 0 +addi x25, zero, 0 +addi x26, zero, 0 +addi x27, zero, 0 +addi x28, zero, 0 +addi x29, zero, 0 +addi x30, zero, 0 +addi x31, zero, 0 + +li sp, 4*256 +call main +j start + +.global cmd_read_spi_flash_id_worker_begin +.global cmd_read_spi_flash_id_worker_end + +cmd_read_spi_flash_id_worker_begin: +li t0,0x02000008 +li t1,'F' +sw t1,0(t0) +li t1,'I' +sw t1,0(t0) +li t1,'X' +sw t1,0(t0) +li t1,'M' +sw t1,0(t0) +li t1,'E' +sw t1,0(t0) +li t1,'\r' +sw t1,0(t0) +li t1,'\n' +sw t1,0(t0) +ret +cmd_read_spi_flash_id_worker_end: + |