diff options
| author | David Daney <ddaney@caviumnetworks.com> | 2009-08-20 14:10:22 -0700 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2009-09-17 20:07:51 +0200 |
| commit | e26449153c386904d2801d6348d66d00e5ba2211 (patch) | |
| tree | de1ef89387558c11c4451e2ad9c6c24e9fddeaf8 /arch/mips/cavium-octeon | |
| parent | 982f6ffeeed5ef6104cfd72e517ff9e7a9270fda (diff) | |
MIPS: Octeon: Add hardware RNG platform device.
Add a platform device for the Octeon Random Number Generator (RNG).
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/cavium-octeon')
| -rw-r--r-- | arch/mips/cavium-octeon/setup.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c index da559249cc2f..468a1209833f 100644 --- a/arch/mips/cavium-octeon/setup.c +++ b/arch/mips/cavium-octeon/setup.c @@ -33,6 +33,7 @@ #include <asm/time.h> #include <asm/octeon/octeon.h> +#include <asm/octeon/cvmx-rnm-defs.h> #ifdef CONFIG_CAVIUM_DECODE_RSL extern void cvmx_interrupt_rsl_decode(void); @@ -926,3 +927,45 @@ out: return ret; } device_initcall(octeon_cf_device_init); + +/* Octeon Random Number Generator. */ +static int __init octeon_rng_device_init(void) +{ + struct platform_device *pd; + int ret = 0; + + struct resource rng_resources[] = { + { + .flags = IORESOURCE_MEM, + .start = XKPHYS_TO_PHYS(CVMX_RNM_CTL_STATUS), + .end = XKPHYS_TO_PHYS(CVMX_RNM_CTL_STATUS) + 0xf + }, { + .flags = IORESOURCE_MEM, + .start = cvmx_build_io_address(8, 0), + .end = cvmx_build_io_address(8, 0) + 0x7 + } + }; + + pd = platform_device_alloc("octeon_rng", -1); + if (!pd) { + ret = -ENOMEM; + goto out; + } + + ret = platform_device_add_resources(pd, rng_resources, + ARRAY_SIZE(rng_resources)); + if (ret) + goto fail; + + ret = platform_device_add(pd); + if (ret) + goto fail; + + return ret; +fail: + platform_device_put(pd); + +out: + return ret; +} +device_initcall(octeon_rng_device_init); |