rk3288: Implement support for CRYPTO module and use it in vboot hashing
This patch implements support for the CRYPTO module in RK3288 and ties
it into the new vboot vb2ex_hwcrypto API. We only implement SHA256 for
now, since the engine doesn't support SHA512 and it's very unlikely that
we'll ever use SHA1 for anything again.
BRANCH=None
BUG=chrome-os-partner:32987
TEST=Booted Pinky, confirmed that it uses the hardware crypto engine and
that firmware body hashing time dropped to about 1.5ms (from over 70ms).
Change-Id: I91d0860b42b93d690d2fa083324d343efe7da5f1
Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Original-Commit-Id: e60d42cbffd0748e13bfe1a281877460ecde936b
Original-Change-Id: I92510082b311a48a56224a4fc44b1bbce39b17ac
Original-Signed-off-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/236436
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: http://review.coreboot.org/9641
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
diff --git a/src/soc/rockchip/rk3288/clock.c b/src/soc/rockchip/rk3288/clock.c
index ab12e8c..d7420ea 100644
--- a/src/soc/rockchip/rk3288/clock.c
+++ b/src/soc/rockchip/rk3288/clock.c
@@ -493,6 +493,16 @@
writel(d << 16 | n, &cru_ptr->cru_clksel_con[8]);
}
+void rkclk_configure_crypto(unsigned int hz)
+{
+ u32 div = PD_BUS_ACLK_HZ / hz;
+
+ assert((div - 1 < 4) && (div * hz == PD_BUS_ACLK_HZ));
+ assert(hz <= 150*MHz); /* Suggested max in TRM. */
+ writel(RK_CLRSETBITS(0x3 << 6, (div - 1) << 6),
+ &cru_ptr->cru_clksel_con[26]);
+}
+
void rkclk_configure_tsadc(unsigned int hz)
{
u32 div;