u-boot/drivers/crypto/fsl/sec.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

181 lines
4.7 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2014 Freescale Semiconductor, Inc.
*/
#include <common.h>
#include <linux/libfdt.h>
#include <fdt_support.h>
#if CONFIG_SYS_FSL_SEC_COMPAT == 2 || CONFIG_SYS_FSL_SEC_COMPAT >= 4
#include <fsl_sec.h>
#endif
/*
* update crypto node properties to a specified revision of the SEC
* called with sec_rev == 0 if not on an E processor
*/
#if CONFIG_SYS_FSL_SEC_COMPAT == 2 /* SEC 2.x/3.x */
void fdt_fixup_crypto_node(void *blob, int sec_rev)
{
static const struct sec_rev_prop {
u32 sec_rev;
u32 num_channels;
u32 channel_fifo_len;
u32 exec_units_mask;
u32 descriptor_types_mask;
} sec_rev_prop_list[] = {
{ 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
{ 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
{ 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
{ 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
{ 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
{ 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */
{ 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* SEC 3.3 */
};
static char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
sizeof("fsl,secX.Y")];
int crypto_node, sec_idx, err;
char *p;
u32 val;
/* locate crypto node based on lowest common compatible */
crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
if (crypto_node == -FDT_ERR_NOTFOUND)
return;
/* delete it if not on an E-processor */
if (crypto_node > 0 && !sec_rev) {
fdt_del_node(blob, crypto_node);
return;
}
/* else we got called for possible uprev */
for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
break;
if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
puts("warning: unknown SEC revision number\n");
return;
}
err = fdt_setprop_u32(blob, crypto_node, "fsl,num-channels",
sec_rev_prop_list[sec_idx].num_channels);
if (err < 0)
printf("WARNING: could not set crypto property: %s\n",
fdt_strerror(err));
err = fdt_setprop_u32(blob, crypto_node, "fsl,descriptor-types-mask",
sec_rev_prop_list[sec_idx].descriptor_types_mask);
if (err < 0)
printf("WARNING: could not set crypto property: %s\n",
fdt_strerror(err));
err = fdt_setprop_u32(blob, crypto_node, "fsl,exec-units-mask",
sec_rev_prop_list[sec_idx].exec_units_mask);
if (err < 0)
printf("WARNING: could not set crypto property: %s\n",
fdt_strerror(err));
err = fdt_setprop_u32(blob, crypto_node, "fsl,channel-fifo-len",
sec_rev_prop_list[sec_idx].channel_fifo_len);
if (err < 0)
printf("WARNING: could not set crypto property: %s\n",
fdt_strerror(err));
val = 0;
while (sec_idx >= 0) {
p = compat_strlist + val;
val += sprintf(p, "fsl,sec%d.%d",
(sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
sec_idx--;
}
err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist,
val);
if (err < 0)
printf("WARNING: could not set crypto property: %s\n",
fdt_strerror(err));
}
#elif CONFIG_SYS_FSL_SEC_COMPAT >= 4 /* SEC4 */
static u8 caam_get_era(void)
{
static const struct {
u16 ip_id;
u8 maj_rev;
u8 era;
} caam_eras[] = {
{0x0A10, 1, 1},
{0x0A10, 2, 2},
{0x0A12, 1, 3},
{0x0A14, 1, 3},
{0x0A14, 2, 4},
{0x0A16, 1, 4},
{0x0A10, 3, 4},
{0x0A11, 1, 4},
{0x0A18, 1, 4},
{0x0A11, 2, 5},
{0x0A12, 2, 5},
{0x0A13, 1, 5},
{0x0A1C, 1, 5}
};
ccsr_sec_t __iomem *sec = (void __iomem *)CONFIG_SYS_FSL_SEC_ADDR;
u32 secvid_ms = sec_in32(&sec->secvid_ms);
u32 ccbvid = sec_in32(&sec->ccbvid);
u16 ip_id = (secvid_ms & SEC_SECVID_MS_IPID_MASK) >>
SEC_SECVID_MS_IPID_SHIFT;
u8 maj_rev = (secvid_ms & SEC_SECVID_MS_MAJ_REV_MASK) >>
SEC_SECVID_MS_MAJ_REV_SHIFT;
u8 era = (ccbvid & SEC_CCBVID_ERA_MASK) >> SEC_CCBVID_ERA_SHIFT;
int i;
if (era) /* This is '0' prior to CAAM ERA-6 */
return era;
for (i = 0; i < ARRAY_SIZE(caam_eras); i++)
if (caam_eras[i].ip_id == ip_id &&
caam_eras[i].maj_rev == maj_rev)
return caam_eras[i].era;
return 0;
}
static void fdt_fixup_crypto_era(void *blob, u32 era)
{
int err;
int crypto_node;
crypto_node = fdt_path_offset(blob, "crypto");
if (crypto_node < 0) {
printf("WARNING: Missing crypto node\n");
return;
}
err = fdt_setprop_u32(blob, crypto_node, "fsl,sec-era", era);
if (err < 0) {
printf("ERROR: could not set fsl,sec-era property: %s\n",
fdt_strerror(err));
}
}
void fdt_fixup_crypto_node(void *blob, int sec_rev)
{
u8 era;
if (!sec_rev) {
fdt_del_node_and_alias(blob, "crypto");
return;
}
/* Add SEC ERA information in compatible */
era = caam_get_era();
if (era) {
fdt_fixup_crypto_era(blob, era);
} else {
printf("WARNING: Unable to get ERA for CAAM rev: %d\n",
sec_rev);
}
}
#endif