diff options
| author | Catalin Marinas <catalin.marinas@arm.com> | 2011-05-06 16:27:13 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2011-05-06 16:28:05 +0100 |
| commit | e4682d17a2b3b2171dd87b594da534bc1b097b01 (patch) | |
| tree | 962ba70d1d74ed25df04161138d98f63eb67dd3a | |
| parent | d1cf723140258fe2178fd0775d872731a4e3d40c (diff) | |
Set the generic timer frequency (normally done by the firmware).
| -rw-r--r-- | boot.S | 12 |
1 files changed, 12 insertions, 0 deletions
@@ -13,6 +13,18 @@ .globl _start _start: #ifdef SMP +#ifdef VEXPRESS + @ + @ Program architected timer frequency + @ + mrc p15, 0, r0, c0, c1, 1 @ CPUID_EXT_PFR1 + lsr r0, r0, #16 + and r0, r0, #1 @ Check generic timer support + beq 1f + ldr r0, =24000000 @ 24MHz timer frequency + mcr p15, 0, r0, c14, c0, 0 @ CNTFRQ +1: +#endif @ @ CPU initialisation @ |