diff options
Diffstat (limited to 'arch/powerpc/platforms/powernv/opal-wrappers.S')
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal-wrappers.S | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S b/arch/powerpc/platforms/powernv/opal-wrappers.S index 0a299be588af..54eca8b3b288 100644 --- a/arch/powerpc/platforms/powernv/opal-wrappers.S +++ b/arch/powerpc/platforms/powernv/opal-wrappers.S @@ -158,6 +158,43 @@ opal_tracepoint_return: blr #endif +/* + * Make opal call in realmode. This is a generic function to be called + * from realmode. It handles endianness. + * + * r13 - paca pointer + * r1 - stack pointer + * r0 - opal token + */ +_GLOBAL(opal_call_realmode) + mflr r12 + std r12,PPC_LR_STKOFF(r1) + ld r2,PACATOC(r13) + /* Set opal return address */ + LOAD_REG_ADDR(r12,return_from_opal_call) + mtlr r12 + + mfmsr r12 +#ifdef __LITTLE_ENDIAN__ + /* Handle endian-ness */ + li r11,MSR_LE + andc r12,r12,r11 +#endif + mtspr SPRN_HSRR1,r12 + LOAD_REG_ADDR(r11,opal) + ld r12,8(r11) + ld r2,0(r11) + mtspr SPRN_HSRR0,r12 + hrfid + +return_from_opal_call: +#ifdef __LITTLE_ENDIAN__ + FIXUP_ENDIAN +#endif + ld r12,PPC_LR_STKOFF(r1) + mtlr r12 + blr + OPAL_CALL(opal_invalid_call, OPAL_INVALID_CALL); OPAL_CALL(opal_console_write, OPAL_CONSOLE_WRITE); OPAL_CALL(opal_console_read, OPAL_CONSOLE_READ); @@ -247,6 +284,7 @@ OPAL_CALL(opal_sensor_read, OPAL_SENSOR_READ); OPAL_CALL(opal_get_param, OPAL_GET_PARAM); OPAL_CALL(opal_set_param, OPAL_SET_PARAM); OPAL_CALL(opal_handle_hmi, OPAL_HANDLE_HMI); +OPAL_CALL(opal_slw_set_reg, OPAL_SLW_SET_REG); OPAL_CALL(opal_register_dump_region, OPAL_REGISTER_DUMP_REGION); OPAL_CALL(opal_unregister_dump_region, OPAL_UNREGISTER_DUMP_REGION); OPAL_CALL(opal_pci_set_phb_cxl_mode, OPAL_PCI_SET_PHB_CXL_MODE); @@ -254,3 +292,4 @@ OPAL_CALL(opal_tpo_write, OPAL_WRITE_TPO); OPAL_CALL(opal_tpo_read, OPAL_READ_TPO); OPAL_CALL(opal_ipmi_send, OPAL_IPMI_SEND); OPAL_CALL(opal_ipmi_recv, OPAL_IPMI_RECV); +OPAL_CALL(opal_i2c_request, OPAL_I2C_REQUEST); |