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path: root/drivers/crypto/fsl/sec.c
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Diffstat (limited to 'drivers/crypto/fsl/sec.c')
-rw-r--r--drivers/crypto/fsl/sec.c184
1 files changed, 184 insertions, 0 deletions
diff --git a/drivers/crypto/fsl/sec.c b/drivers/crypto/fsl/sec.c
new file mode 100644
index 0000000..443ee96
--- /dev/null
+++ b/drivers/crypto/fsl/sec.c
@@ -0,0 +1,184 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <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;
+ }
+
+ val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
+ err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
+ if (err < 0)
+ printf("WARNING: could not set crypto property: %s\n",
+ fdt_strerror(err));
+
+ val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
+ err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask",
+ &val, 4);
+ if (err < 0)
+ printf("WARNING: could not set crypto property: %s\n",
+ fdt_strerror(err));
+
+ val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask);
+ err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4);
+ if (err < 0)
+ printf("WARNING: could not set crypto property: %s\n",
+ fdt_strerror(err));
+
+ val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len);
+ err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
+ 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(blob, crypto_node, "fsl,sec-era", &era,
+ sizeof(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