Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 883619a9 authored by Alex Porosanu's avatar Alex Porosanu Committed by Herbert Xu
Browse files

crypto: caam - fix ERA retrieval function



SEC ERA has to be retrieved by reading the "fsl,sec-era" property
from the device tree. This property is updated/filled in by
u-boot.

Signed-off-by: default avatarAlex Porosanu <alexandru.porosanu@freescale.com>
Reviewed-by: default avatarHoria Geanta <horia.geanta@freescale.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent d167b6e1
Loading
Loading
Loading
Loading
+10 −26
Original line number Diff line number Diff line
@@ -14,7 +14,6 @@
#include "jr.h"
#include "desc_constr.h"
#include "error.h"
#include "ctrl.h"

/*
 * Descriptor to instantiate RNG State Handle 0 in normal mode and
@@ -352,32 +351,17 @@ static void kick_trng(struct platform_device *pdev, int ent_delay)

/**
 * caam_get_era() - Return the ERA of the SEC on SoC, based
 * on the SEC_VID register.
 * Returns the ERA number (1..4) or -ENOTSUPP if the ERA is unknown.
 * @caam_id - the value of the SEC_VID register
 * on "sec-era" propery in the DTS. This property is updated by u-boot.
 **/
int caam_get_era(u64 caam_id)
int caam_get_era(void)
{
	struct sec_vid *sec_vid = (struct sec_vid *)&caam_id;
	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},
		{0x0A11, 1, 4}
	};
	int i;

	for (i = 0; i < ARRAY_SIZE(caam_eras); i++)
		if (caam_eras[i].ip_id == sec_vid->ip_id &&
			caam_eras[i].maj_rev == sec_vid->maj_rev)
				return caam_eras[i].era;
	struct device_node *caam_node;
	for_each_compatible_node(caam_node, NULL, "fsl,sec-v4.0") {
		const uint32_t *prop = (uint32_t *)of_get_property(caam_node,
				"fsl,sec-era",
				NULL);
		return prop ? *prop : -ENOTSUPP;
	}

	return -ENOTSUPP;
}
@@ -551,7 +535,7 @@ static int caam_probe(struct platform_device *pdev)

	/* Report "alive" for developer to see */
	dev_info(dev, "device ID = 0x%016llx (Era %d)\n", caam_id,
		 caam_get_era(caam_id));
		 caam_get_era());
	dev_info(dev, "job rings = %d, qi = %d\n",
		 ctrlpriv->total_jobrs, ctrlpriv->qi_present);

+1 −1
Original line number Diff line number Diff line
@@ -8,6 +8,6 @@
#define CTRL_H

/* Prototypes for backend-level services exposed to APIs */
int caam_get_era(u64 caam_id);
int caam_get_era(void);

#endif /* CTRL_H */