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powerpc/opal: Add real mode call wrappers

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Replace the old generic opal_call_realmode() with proper per-call
wrappers similar to the normal ones and convert callers.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Benjamin Herrenschmidt
2016-07-08 16:37:11 +10:00
zatwierdzone przez Michael Ellerman
rodzic b7d6bf4fdd
commit 69c592ed40
4 zmienionych plików z 51 dodań i 44 usunięć
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63
arch/powerpc/platforms/powernv/opal-wrappers.S
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@@ -59,7 +59,7 @@ END_FTR_SECTION(0, 1); \
#define OPAL_CALL(name, token) \
_GLOBAL_TOC(name); \
mflr r0; \
std r0,16(r1); \
std r0,PPC_LR_STKOFF(r1); \
li r0,token; \
OPAL_BRANCH(opal_tracepoint_entry) \
mfcr r12; \
@@ -92,7 +92,7 @@ opal_return:
FIXUP_ENDIAN
ld r2,PACATOC(r13);
lwz r4,8(r1);
ld r5,16(r1);
ld r5,PPC_LR_STKOFF(r1);
ld r6,PACASAVEDMSR(r13);
mtspr SPRN_SRR0,r5;
mtspr SPRN_SRR1,r6;
@@ -157,43 +157,37 @@ 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
#define OPAL_CALL_REAL(name, token) \
_GLOBAL_TOC(name); \
mflr r0; \
std r0,PPC_LR_STKOFF(r1); \
li r0,token; \
mfcr r12; \
stw r12,8(r1); \
\
/* Set opal return address */ \
LOAD_REG_ADDR(r11, opal_return_realmode); \
mtlr r11; \
mfmsr r12; \
li r11,MSR_LE; \
andc r12,r12,r11; \
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__
opal_return_realmode:
FIXUP_ENDIAN
#endif
ld r2,PACATOC(r13);
lwz r11,8(r1);
ld r12,PPC_LR_STKOFF(r1)
mtcr r11;
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);
@@ -271,6 +265,7 @@ OPAL_CALL(opal_validate_flash, OPAL_FLASH_VALIDATE);
OPAL_CALL(opal_manage_flash, OPAL_FLASH_MANAGE);
OPAL_CALL(opal_update_flash, OPAL_FLASH_UPDATE);
OPAL_CALL(opal_resync_timebase, OPAL_RESYNC_TIMEBASE);
OPAL_CALL_REAL(opal_rm_resync_timebase, OPAL_RESYNC_TIMEBASE);
OPAL_CALL(opal_check_token, OPAL_CHECK_TOKEN);
OPAL_CALL(opal_dump_init, OPAL_DUMP_INIT);
OPAL_CALL(opal_dump_info, OPAL_DUMP_INFO);
@@ -286,7 +281,9 @@ 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_REAL(opal_rm_handle_hmi, OPAL_HANDLE_HMI);
OPAL_CALL(opal_config_cpu_idle_state, OPAL_CONFIG_CPU_IDLE_STATE);
OPAL_CALL_REAL(opal_rm_config_cpu_idle_state, OPAL_CONFIG_CPU_IDLE_STATE);
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);
@@ -311,3 +308,5 @@ OPAL_CALL(opal_int_get_xirr, OPAL_INT_GET_XIRR);
OPAL_CALL(opal_int_set_cppr, OPAL_INT_SET_CPPR);
OPAL_CALL(opal_int_eoi, OPAL_INT_EOI);
OPAL_CALL(opal_int_set_mfrr, OPAL_INT_SET_MFRR);
OPAL_CALL(opal_pci_tce_kill, OPAL_PCI_TCE_KILL);
OPAL_CALL_REAL(opal_rm_pci_tce_kill, OPAL_PCI_TCE_KILL);