diff options
Diffstat (limited to 'lib/cpus/aarch64/cortex_a57.S')
| -rw-r--r-- | lib/cpus/aarch64/cortex_a57.S | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/lib/cpus/aarch64/cortex_a57.S b/lib/cpus/aarch64/cortex_a57.S index 3334e688c..eb6c736f2 100644 --- a/lib/cpus/aarch64/cortex_a57.S +++ b/lib/cpus/aarch64/cortex_a57.S @@ -87,6 +87,7 @@ func cortex_a57_disable_ext_debug * This applies only to revision r0p0 of Cortex A57. * Inputs: * x0: variant[4:7] and revision[0:3] of current cpu. + * Clobbers : x0 - x5 * -------------------------------------------------- */ func errata_a57_806969_wa @@ -119,6 +120,7 @@ skip_806969: * This applies only to revision r0p0 of Cortex A57. * Inputs: * x0: variant[4:7] and revision[0:3] of current cpu. + * Clobbers : x0 - x5 * --------------------------------------------------- */ func errata_a57_813420_wa @@ -147,6 +149,7 @@ skip_813420: /* ------------------------------------------------- * The CPU Ops reset function for Cortex-A57. + * Clobbers: x0-x5, x15, x19, x30 * ------------------------------------------------- */ func cortex_a57_reset_func @@ -155,20 +158,20 @@ func cortex_a57_reset_func /* * Extract the variant[20:23] and revision[0:3] from x0 - * and pack it in x20[0:7] as variant[4:7] and revision[0:3]. - * First extract x0[16:23] to x20[0:7] and zero fill the rest. - * Then extract x0[0:3] into x20[0:3] retaining other bits. + * and pack it in x15[0:7] as variant[4:7] and revision[0:3]. + * First extract x0[16:23] to x15[0:7] and zero fill the rest. + * Then extract x0[0:3] into x15[0:3] retaining other bits. */ - ubfx x20, x0, #(MIDR_VAR_SHIFT - MIDR_REV_BITS), #(MIDR_REV_BITS + MIDR_VAR_BITS) - bfxil x20, x0, #MIDR_REV_SHIFT, #MIDR_REV_BITS + ubfx x15, x0, #(MIDR_VAR_SHIFT - MIDR_REV_BITS), #(MIDR_REV_BITS + MIDR_VAR_BITS) + bfxil x15, x0, #MIDR_REV_SHIFT, #MIDR_REV_BITS #if ERRATA_A57_806969 - mov x0, x20 + mov x0, x15 bl errata_a57_806969_wa #endif #if ERRATA_A57_813420 - mov x0, x20 + mov x0, x15 bl errata_a57_813420_wa #endif |