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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
38 lines
1015 B
C
38 lines
1015 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2018 NXP
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*/
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/*
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* Boot command to get and set the PRIBLOB bitfield form the SCFGR register
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* of the CAAM IP. It is recommended to set this bitfield to 3 once your
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* encrypted boot image is ready, to prevent the generation of blobs usable
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* to decrypt an encrypted boot image.
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*/
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#include <asm/io.h>
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#include <common.h>
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#include <command.h>
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#include <fsl_sec.h>
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int do_priblob_write(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
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{
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ccsr_sec_t *sec_regs = (ccsr_sec_t *)CAAM_BASE_ADDR;
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u32 scfgr = sec_in32(&sec_regs->scfgr);
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scfgr |= 0x3;
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sec_out32(&sec_regs->scfgr, scfgr);
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printf("New priblob setting = 0x%x\n", sec_in32(&sec_regs->scfgr) & 0x3);
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return 0;
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}
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U_BOOT_CMD(
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set_priblob_bitfield, 1, 0, do_priblob_write,
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"Set the PRIBLOB bitfield to 3",
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"<value>\n"
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" - Write 3 in PRIBLOB bitfield of SCFGR regiter of CAAM IP.\n"
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" Prevent the generation of blobs usable to decrypt an\n"
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" encrypted boot image."
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);
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