| // SPDX-License-Identifier: GPL-2.0+ |
| * Boot command to get and set the PRIBLOB bitfield form the SCFGR register |
| * of the CAAM IP. It is recommended to set this bitfield to 3 once your |
| * encrypted boot image is ready, to prevent the generation of blobs usable |
| * to decrypt an encrypted boot image. |
| int do_priblob_write(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[]) |
| ccsr_sec_t *sec_regs = (ccsr_sec_t *)CAAM_BASE_ADDR; |
| u32 scfgr = sec_in32(&sec_regs->scfgr); |
| sec_out32(&sec_regs->scfgr, scfgr); |
| printf("New priblob setting = 0x%x\n", sec_in32(&sec_regs->scfgr) & 0x3); |
| set_priblob_bitfield, 1, 0, do_priblob_write, |
| "Set the PRIBLOB bitfield to 3", |
| " - Write 3 in PRIBLOB bitfield of SCFGR regiter of CAAM IP.\n" |
| " Prevent the generation of blobs usable to decrypt an\n" |