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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>
124 lines
3.6 KiB
C
124 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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*
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* Command for encapsulating/decapsulating blob of memory.
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*/
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#include <common.h>
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#include <command.h>
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#include <malloc.h>
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#include <asm/byteorder.h>
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#include <linux/compiler.h>
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#if defined(CONFIG_ARCH_MX6) || defined(CONFIG_ARCH_MX7) || \
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defined(CONFIG_ARCH_MX7ULP) || defined(CONFIG_ARCH_IMX8M)
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#include <fsl_sec.h>
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#include <asm/arch/clock.h>
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#endif
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/**
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* blob_decap() - Decapsulate the data as a blob
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* @key_mod: - Pointer to key modifier/key
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* @src: - Address of data to be decapsulated
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* @dst: - Address of data to be decapsulated
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* @len: - Size of data to be decapsulated
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*
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* Returns zero on success,and negative on error.
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*/
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__weak int blob_decap(u8 *key_mod, u8 *src, u8 *dst, u32 len)
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{
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return 0;
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}
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/**
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* blob_encap() - Encapsulate the data as a blob
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* @key_mod: - Pointer to key modifier/key
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* @src: - Address of data to be encapsulated
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* @dst: - Address of data to be encapsulated
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* @len: - Size of data to be encapsulated
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*
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* Returns zero on success,and negative on error.
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*/
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__weak int blob_encap(u8 *key_mod, u8 *src, u8 *dst, u32 len)
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{
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return 0;
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}
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/**
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* do_blob() - Handle the "blob" command-line command
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* @cmdtp: Command data struct pointer
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* @flag: Command flag
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* @argc: Command-line argument count
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* @argv: Array of command-line arguments
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*
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* Returns zero on success, CMD_RET_USAGE in case of misuse and negative
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* on error.
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*/
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static int do_blob(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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ulong key_addr, src_addr, dst_addr, len;
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uint8_t *km_ptr, *src_ptr, *dst_ptr;
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int enc, ret = 0;
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if (argc != 6)
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return CMD_RET_USAGE;
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if (!strncmp(argv[1], "enc", 3))
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enc = 1;
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else if (!strncmp(argv[1], "dec", 3))
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enc = 0;
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else
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return CMD_RET_USAGE;
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src_addr = hextoul(argv[2], NULL);
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dst_addr = hextoul(argv[3], NULL);
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len = hextoul(argv[4], NULL);
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key_addr = hextoul(argv[5], NULL);
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km_ptr = (uint8_t *)(uintptr_t)key_addr;
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src_ptr = (uint8_t *)(uintptr_t)src_addr;
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dst_ptr = (uint8_t *)(uintptr_t)dst_addr;
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#if defined(CONFIG_ARCH_MX6) || defined(CONFIG_ARCH_MX7) || \
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defined(CONFIG_ARCH_MX7ULP) || defined(CONFIG_ARCH_IMX8M)
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hab_caam_clock_enable(1);
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u32 out_jr_size = sec_in32(CFG_SYS_FSL_JR0_ADDR +
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FSL_CAAM_ORSR_JRa_OFFSET);
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if (out_jr_size != FSL_CAAM_MAX_JR_SIZE)
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sec_init();
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#endif
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if (enc)
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ret = blob_encap(km_ptr, src_ptr, dst_ptr, len);
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else
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ret = blob_decap(km_ptr, src_ptr, dst_ptr, len);
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return ret;
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}
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/***************************************************/
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static char blob_help_text[] =
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"enc src dst len km - Encapsulate and create blob of data\n"
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" $len bytes long at address $src and\n"
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" store the result at address $dst.\n"
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" $km is the address where the key\n"
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" modifier is stored.\n"
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" The modifier is required for generation\n"
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" /use as key for cryptographic operation.\n"
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" Key modifier should be 16 byte long.\n"
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"blob dec src dst len km - Decapsulate the blob of data at address\n"
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" $src and store result of $len byte at\n"
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" addr $dst.\n"
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" $km is the address where the key\n"
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" modifier is stored.\n"
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" The modifier is required for generation\n"
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" /use as key for cryptographic operation.\n"
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" Key modifier should be 16 byte long.\n";
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U_BOOT_CMD(
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blob, 6, 1, do_blob,
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"Blob encapsulation/decryption",
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blob_help_text
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);
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