[PATCH 17/17] powerpc: crypto: enable the PFO-based encryption device
From: Kent Yoder <hidden>
Date: 2012-03-21 21:41:11
Also in:
linux-crypto, lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
This patch adds the cas bits to advertise support for the Platform Facilities Option (PFO) based encryption accelerator device. The nx device driver provides support for this hardware feature. Signed-off-by: Kent Yoder <redacted> --- arch/powerpc/kernel/prom_init.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 6691077..fb5412e 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c@@ -716,6 +716,12 @@ static void __init early_cmdline_parse(void) #else #define OV5_PFO_HW_RNG 0x00 #endif +#if defined(CONFIG_CRYPTO_DEV_NX) || \ + defined(CONFIG_CRYPTO_DEV_NX_MODULE) +#define OV5_PFO_HW_ENCR 0x20 +#else +#define OV5_PFO_HW_ENCR 0x00 +#endif /* Option Vector 6: IBM PAPR hints */ #define OV6_LINUX 0x02 /* Linux is our OS */
@@ -783,7 +789,7 @@ static unsigned char ibm_architecture_vec[] = { 0, 0, 0, - OV5_PFO_HW_RNG, + OV5_PFO_HW_RNG | OV5_PFO_HW_ENCR, /* option vector 6: IBM PAPR hints */ 4 - 2, /* length */
--
1.7.1