Patchwork [17/17] powerpc: crypto: enable the PFO-based encryption device

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Submitter Kent Yoder
Date March 21, 2012, 9:41 p.m.
Message ID <1332366111.3858.56.camel@key-ThinkPad-W510>
Download mbox | patch
Permalink /patch/148115/
State Changes Requested
Headers show

Comments

Kent Yoder - March 21, 2012, 9:41 p.m.
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 <key@linux.vnet.ibm.com>
---
 arch/powerpc/kernel/prom_init.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

Patch

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 */