powerpc/powernv: Basic support for OPAL
Add definition of OPAL interfaces along with the wrappers to call into OPAL runtime and the early device-tree parsing hook to locate the OPAL runtime firmware. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt
Родитель
817c21ad9a
Коммит
14a43e69ed
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@ -48,6 +48,8 @@
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#define FW_FEATURE_CMO ASM_CONST(0x0000000002000000)
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#define FW_FEATURE_VPHN ASM_CONST(0x0000000004000000)
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#define FW_FEATURE_XCMO ASM_CONST(0x0000000008000000)
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#define FW_FEATURE_OPAL ASM_CONST(0x0000000010000000)
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#define FW_FEATURE_OPALv2 ASM_CONST(0x0000000020000000)
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#ifndef __ASSEMBLY__
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@ -65,6 +67,8 @@ enum {
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FW_FEATURE_PSERIES_ALWAYS = 0,
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FW_FEATURE_ISERIES_POSSIBLE = FW_FEATURE_ISERIES | FW_FEATURE_LPAR,
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FW_FEATURE_ISERIES_ALWAYS = FW_FEATURE_ISERIES | FW_FEATURE_LPAR,
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FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL | FW_FEATURE_OPALv2,
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FW_FEATURE_POWERNV_ALWAYS = 0,
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FW_FEATURE_PS3_POSSIBLE = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
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FW_FEATURE_PS3_ALWAYS = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
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FW_FEATURE_CELLEB_POSSIBLE = FW_FEATURE_LPAR | FW_FEATURE_BEAT,
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@ -78,6 +82,9 @@ enum {
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#ifdef CONFIG_PPC_ISERIES
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FW_FEATURE_ISERIES_POSSIBLE |
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#endif
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#ifdef CONFIG_PPC_POWERNV
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FW_FEATURE_POWERNV_POSSIBLE |
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#endif
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#ifdef CONFIG_PPC_PS3
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FW_FEATURE_PS3_POSSIBLE |
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#endif
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@ -95,6 +102,9 @@ enum {
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#ifdef CONFIG_PPC_ISERIES
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FW_FEATURE_ISERIES_ALWAYS &
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#endif
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#ifdef CONFIG_PPC_POWERNV
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FW_FEATURE_POWERNV_ALWAYS &
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#endif
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#ifdef CONFIG_PPC_PS3
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FW_FEATURE_PS3_ALWAYS &
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#endif
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@ -37,14 +37,394 @@ extern long opal_query_takeover(u64 *hal_size, u64 *hal_align);
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extern long opal_do_takeover(struct opal_takeover_args *args);
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struct rtas_args;
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extern int opal_enter_rtas(struct rtas_args *args,
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unsigned long data,
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unsigned long entry);
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#endif /* __ASSEMBLY__ */
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/****** OPAL APIs ******/
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/* Return codes */
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#define OPAL_SUCCESS 0
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#define OPAL_PARAMETER -1
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#define OPAL_BUSY -2
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#define OPAL_PARTIAL -3
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#define OPAL_CONSTRAINED -4
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#define OPAL_CLOSED -5
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#define OPAL_HARDWARE -6
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#define OPAL_UNSUPPORTED -7
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#define OPAL_PERMISSION -8
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#define OPAL_NO_MEM -9
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#define OPAL_RESOURCE -10
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#define OPAL_INTERNAL_ERROR -11
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#define OPAL_BUSY_EVENT -12
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#define OPAL_HARDWARE_FROZEN -13
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/* API Tokens (in r0) */
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#define OPAL_CONSOLE_WRITE 1
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#define OPAL_CONSOLE_READ 2
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#define OPAL_RTC_READ 3
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#define OPAL_RTC_WRITE 4
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#define OPAL_CEC_POWER_DOWN 5
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#define OPAL_CEC_REBOOT 6
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#define OPAL_READ_NVRAM 7
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#define OPAL_WRITE_NVRAM 8
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#define OPAL_HANDLE_INTERRUPT 9
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#define OPAL_POLL_EVENTS 10
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#define OPAL_PCI_SET_HUB_TCE_MEMORY 11
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#define OPAL_PCI_SET_PHB_TCE_MEMORY 12
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#define OPAL_PCI_CONFIG_READ_BYTE 13
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#define OPAL_PCI_CONFIG_READ_HALF_WORD 14
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#define OPAL_PCI_CONFIG_READ_WORD 15
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#define OPAL_PCI_CONFIG_WRITE_BYTE 16
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#define OPAL_PCI_CONFIG_WRITE_HALF_WORD 17
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#define OPAL_PCI_CONFIG_WRITE_WORD 18
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#define OPAL_SET_XIVE 19
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#define OPAL_GET_XIVE 20
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#define OPAL_GET_COMPLETION_TOKEN_STATUS 21 /* obsolete */
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#define OPAL_REGISTER_OPAL_EXCEPTION_HANDLER 22
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#define OPAL_PCI_EEH_FREEZE_STATUS 23
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#define OPAL_PCI_SHPC 24
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#define OPAL_CONSOLE_WRITE_BUFFER_SPACE 25
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#define OPAL_PCI_EEH_FREEZE_CLEAR 26
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#define OPAL_PCI_PHB_MMIO_ENABLE 27
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#define OPAL_PCI_SET_PHB_MEM_WINDOW 28
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#define OPAL_PCI_MAP_PE_MMIO_WINDOW 29
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#define OPAL_PCI_SET_PHB_TABLE_MEMORY 30
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#define OPAL_PCI_SET_PE 31
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#define OPAL_PCI_SET_PELTV 32
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#define OPAL_PCI_SET_MVE 33
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#define OPAL_PCI_SET_MVE_ENABLE 34
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#define OPAL_PCI_GET_XIVE_REISSUE 35
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#define OPAL_PCI_SET_XIVE_REISSUE 36
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#define OPAL_PCI_SET_XIVE_PE 37
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#define OPAL_GET_XIVE_SOURCE 38
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#define OPAL_GET_MSI_32 39
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#define OPAL_GET_MSI_64 40
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#define OPAL_START_CPU 41
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#define OPAL_QUERY_CPU_STATUS 42
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#define OPAL_WRITE_OPPANEL 43
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#define OPAL_PCI_MAP_PE_DMA_WINDOW 44
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#define OPAL_PCI_MAP_PE_DMA_WINDOW_REAL 45
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#define OPAL_PCI_RESET 49
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#ifndef __ASSEMBLY__
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/* Other enums */
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enum OpalVendorApiTokens {
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OPAL_START_VENDOR_API_RANGE = 1000, OPAL_END_VENDOR_API_RANGE = 1999
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};
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enum OpalFreezeState {
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OPAL_EEH_STOPPED_NOT_FROZEN = 0,
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OPAL_EEH_STOPPED_MMIO_FREEZE = 1,
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OPAL_EEH_STOPPED_DMA_FREEZE = 2,
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OPAL_EEH_STOPPED_MMIO_DMA_FREEZE = 3,
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OPAL_EEH_STOPPED_RESET = 4,
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OPAL_EEH_STOPPED_TEMP_UNAVAIL = 5,
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OPAL_EEH_STOPPED_PERM_UNAVAIL = 6
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};
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enum OpalEehFreezeActionToken {
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OPAL_EEH_ACTION_CLEAR_FREEZE_MMIO = 1,
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OPAL_EEH_ACTION_CLEAR_FREEZE_DMA = 2,
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OPAL_EEH_ACTION_CLEAR_FREEZE_ALL = 3
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};
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enum OpalPciStatusToken {
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OPAL_EEH_PHB_NO_ERROR = 0,
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OPAL_EEH_PHB_FATAL = 1,
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OPAL_EEH_PHB_RECOVERABLE = 2,
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OPAL_EEH_PHB_BUS_ERROR = 3,
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OPAL_EEH_PCI_NO_DEVSEL = 4,
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OPAL_EEH_PCI_TA = 5,
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OPAL_EEH_PCIEX_UR = 6,
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OPAL_EEH_PCIEX_CA = 7,
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OPAL_EEH_PCI_MMIO_ERROR = 8,
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OPAL_EEH_PCI_DMA_ERROR = 9
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};
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enum OpalShpcAction {
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OPAL_SHPC_GET_LINK_STATE = 0,
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OPAL_SHPC_GET_SLOT_STATE = 1
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};
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enum OpalShpcLinkState {
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OPAL_SHPC_LINK_DOWN = 0,
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OPAL_SHPC_LINK_UP = 1
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};
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enum OpalMmioWindowType {
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OPAL_M32_WINDOW_TYPE = 1,
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OPAL_M64_WINDOW_TYPE = 2,
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OPAL_IO_WINDOW_TYPE = 3
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};
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enum OpalShpcSlotState {
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OPAL_SHPC_DEV_NOT_PRESENT = 0,
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OPAL_SHPC_DEV_PRESENT = 1
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};
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enum OpalExceptionHandler {
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OPAL_MACHINE_CHECK_HANDLER = 1,
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OPAL_HYPERVISOR_MAINTENANCE_HANDLER = 2,
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OPAL_SOFTPATCH_HANDLER = 3
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};
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enum OpalPendingState {
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OPAL_EVENT_OPAL_INTERNAL = 0x1,
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OPAL_EVENT_NVRAM = 0x2,
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OPAL_EVENT_RTC = 0x4,
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OPAL_EVENT_CONSOLE_OUTPUT = 0x8,
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OPAL_EVENT_CONSOLE_INPUT = 0x10
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};
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/* Machine check related definitions */
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enum OpalMCE_Version {
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OpalMCE_V1 = 1,
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};
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enum OpalMCE_Severity {
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OpalMCE_SEV_NO_ERROR = 0,
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OpalMCE_SEV_WARNING = 1,
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OpalMCE_SEV_ERROR_SYNC = 2,
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OpalMCE_SEV_FATAL = 3,
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};
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enum OpalMCE_Disposition {
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OpalMCE_DISPOSITION_RECOVERED = 0,
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OpalMCE_DISPOSITION_NOT_RECOVERED = 1,
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};
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enum OpalMCE_Initiator {
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OpalMCE_INITIATOR_UNKNOWN = 0,
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OpalMCE_INITIATOR_CPU = 1,
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};
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enum OpalMCE_ErrorType {
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OpalMCE_ERROR_TYPE_UNKNOWN = 0,
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OpalMCE_ERROR_TYPE_UE = 1,
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OpalMCE_ERROR_TYPE_SLB = 2,
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OpalMCE_ERROR_TYPE_ERAT = 3,
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OpalMCE_ERROR_TYPE_TLB = 4,
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};
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enum OpalMCE_UeErrorType {
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OpalMCE_UE_ERROR_INDETERMINATE = 0,
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OpalMCE_UE_ERROR_IFETCH = 1,
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OpalMCE_UE_ERROR_PAGE_TABLE_WALK_IFETCH = 2,
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OpalMCE_UE_ERROR_LOAD_STORE = 3,
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OpalMCE_UE_ERROR_PAGE_TABLE_WALK_LOAD_STORE = 4,
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};
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enum OpalMCE_SlbErrorType {
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OpalMCE_SLB_ERROR_INDETERMINATE = 0,
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OpalMCE_SLB_ERROR_PARITY = 1,
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OpalMCE_SLB_ERROR_MULTIHIT = 2,
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};
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enum OpalMCE_EratErrorType {
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OpalMCE_ERAT_ERROR_INDETERMINATE = 0,
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OpalMCE_ERAT_ERROR_PARITY = 1,
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OpalMCE_ERAT_ERROR_MULTIHIT = 2,
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};
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enum OpalMCE_TlbErrorType {
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OpalMCE_TLB_ERROR_INDETERMINATE = 0,
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OpalMCE_TLB_ERROR_PARITY = 1,
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OpalMCE_TLB_ERROR_MULTIHIT = 2,
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};
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enum OpalThreadStatus {
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OPAL_THREAD_INACTIVE = 0x0,
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OPAL_THREAD_STARTED = 0x1
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};
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enum OpalPciBusCompare {
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OpalPciBusAny = 0, /* Any bus number match */
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OpalPciBus3Bits = 2, /* Match top 3 bits of bus number */
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OpalPciBus4Bits = 3, /* Match top 4 bits of bus number */
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OpalPciBus5Bits = 4, /* Match top 5 bits of bus number */
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OpalPciBus6Bits = 5, /* Match top 6 bits of bus number */
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OpalPciBus7Bits = 6, /* Match top 7 bits of bus number */
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OpalPciBusAll = 7, /* Match bus number exactly */
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};
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enum OpalDeviceCompare {
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OPAL_IGNORE_RID_DEVICE_NUMBER = 0,
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OPAL_COMPARE_RID_DEVICE_NUMBER = 1
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};
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enum OpalFuncCompare {
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OPAL_IGNORE_RID_FUNCTION_NUMBER = 0,
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OPAL_COMPARE_RID_FUNCTION_NUMBER = 1
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};
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enum OpalPeAction {
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OPAL_UNMAP_PE = 0,
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OPAL_MAP_PE = 1
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};
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enum OpalPciResetAndReinitScope {
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OPAL_PHB_COMPLETE = 1, OPAL_PCI_LINK = 2, OPAL_PHB_ERROR = 3,
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OPAL_PCI_HOT_RESET = 4, OPAL_PCI_FUNDAMENTAL_RESET = 5,
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OPAL_PCI_IODA_RESET = 6,
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};
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enum OpalPciResetState { OPAL_DEASSERT_RESET = 0, OPAL_ASSERT_RESET = 1 };
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struct opal_machine_check_event {
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enum OpalMCE_Version version:8; /* 0x00 */
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uint8_t in_use; /* 0x01 */
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enum OpalMCE_Severity severity:8; /* 0x02 */
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enum OpalMCE_Initiator initiator:8; /* 0x03 */
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enum OpalMCE_ErrorType error_type:8; /* 0x04 */
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enum OpalMCE_Disposition disposition:8; /* 0x05 */
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uint8_t reserved_1[2]; /* 0x06 */
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uint64_t gpr3; /* 0x08 */
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uint64_t srr0; /* 0x10 */
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uint64_t srr1; /* 0x18 */
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union { /* 0x20 */
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struct {
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enum OpalMCE_UeErrorType ue_error_type:8;
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uint8_t effective_address_provided;
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uint8_t physical_address_provided;
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uint8_t reserved_1[5];
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uint64_t effective_address;
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uint64_t physical_address;
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uint8_t reserved_2[8];
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} ue_error;
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struct {
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enum OpalMCE_SlbErrorType slb_error_type:8;
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uint8_t effective_address_provided;
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uint8_t reserved_1[6];
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uint64_t effective_address;
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uint8_t reserved_2[16];
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} slb_error;
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struct {
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enum OpalMCE_EratErrorType erat_error_type:8;
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uint8_t effective_address_provided;
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uint8_t reserved_1[6];
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uint64_t effective_address;
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uint8_t reserved_2[16];
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} erat_error;
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struct {
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enum OpalMCE_TlbErrorType tlb_error_type:8;
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uint8_t effective_address_provided;
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uint8_t reserved_1[6];
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uint64_t effective_address;
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uint8_t reserved_2[16];
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} tlb_error;
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} u;
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};
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typedef struct oppanel_line {
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/* XXX */
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} oppanel_line_t;
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/* API functions */
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int64_t opal_console_write(int64_t term_number, int64_t *length,
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const uint8_t *buffer);
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int64_t opal_console_read(int64_t term_number, int64_t *length,
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uint8_t *buffer);
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int64_t opal_console_write_buffer_space(int64_t term_number,
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int64_t *length);
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int64_t opal_rtc_read(uint32_t *year_month_day,
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uint64_t *hour_minute_second_millisecond);
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int64_t opal_rtc_write(uint32_t year_month_day,
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uint64_t hour_minute_second_millisecond);
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int64_t opal_cec_power_down(uint64_t request);
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int64_t opal_cec_reboot(void);
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int64_t opal_read_nvram(uint64_t buffer, uint64_t size, uint64_t offset);
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int64_t opal_write_nvram(uint64_t buffer, uint64_t size, uint64_t offset);
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int64_t opal_handle_interrupt(uint64_t isn, uint64_t *outstanding_event_mask);
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int64_t opal_poll_events(uint64_t *outstanding_event_mask);
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int64_t opal_pci_set_hub_tce_memory(uint64_t hub_id, uint64_t tce_mem_addr,
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uint64_t tce_mem_size);
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int64_t opal_pci_set_phb_tce_memory(uint64_t phb_id, uint64_t tce_mem_addr,
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uint64_t tce_mem_size);
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int64_t opal_pci_config_read_byte(uint64_t phb_id, uint64_t bus_dev_func,
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uint64_t offset, uint8_t *data);
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int64_t opal_pci_config_read_half_word(uint64_t phb_id, uint64_t bus_dev_func,
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uint64_t offset, uint16_t *data);
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int64_t opal_pci_config_read_word(uint64_t phb_id, uint64_t bus_dev_func,
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uint64_t offset, uint32_t *data);
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int64_t opal_pci_config_write_byte(uint64_t phb_id, uint64_t bus_dev_func,
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uint64_t offset, uint8_t data);
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int64_t opal_pci_config_write_half_word(uint64_t phb_id, uint64_t bus_dev_func,
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uint64_t offset, uint16_t data);
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int64_t opal_pci_config_write_word(uint64_t phb_id, uint64_t bus_dev_func,
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uint64_t offset, uint32_t data);
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int64_t opal_set_xive(uint32_t isn, uint16_t server, uint8_t priority);
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int64_t opal_get_xive(uint32_t isn, uint16_t *server, uint8_t *priority);
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int64_t opal_register_exception_handler(uint64_t opal_exception,
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uint64_t handler_address,
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uint64_t glue_cache_line);
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int64_t opal_pci_eeh_freeze_status(uint64_t phb_id, uint64_t pe_number,
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uint8_t *freeze_state,
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uint16_t *pci_error_type,
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uint64_t *phb_status);
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int64_t opal_pci_eeh_freeze_clear(uint64_t phb_id, uint64_t pe_number,
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uint64_t eeh_action_token);
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int64_t opal_pci_shpc(uint64_t phb_id, uint64_t shpc_action, uint8_t *state);
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int64_t opal_pci_phb_mmio_enable(uint64_t phb_id, uint16_t window_type,
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uint16_t window_num, uint16_t enable);
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int64_t opal_pci_set_phb_mem_window(uint64_t phb_id, uint16_t window_type,
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uint16_t window_num,
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uint64_t starting_real_address,
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uint64_t starting_pci_address,
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uint16_t segment_size);
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int64_t opal_pci_map_pe_mmio_window(uint64_t phb_id, uint16_t pe_number,
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uint16_t window_type, uint16_t window_num,
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uint16_t segment_num);
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int64_t opal_pci_set_phb_table_memory(uint64_t phb_id, uint64_t rtt_addr,
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uint64_t ivt_addr, uint64_t ivt_len,
|
||||
uint64_t reject_array_addr,
|
||||
uint64_t peltv_addr);
|
||||
int64_t opal_pci_set_pe(uint64_t phb_id, uint64_t pe_number, uint64_t bus_dev_func,
|
||||
uint8_t bus_compare, uint8_t dev_compare, uint8_t func_compare,
|
||||
uint8_t pe_action);
|
||||
int64_t opal_pci_set_peltv(uint64_t phb_id, uint32_t parent_pe, uint32_t child_pe,
|
||||
uint8_t state);
|
||||
int64_t opal_pci_set_mve(uint64_t phb_id, uint32_t mve_number, uint32_t pe_number);
|
||||
int64_t opal_pci_set_mve_enable(uint64_t phb_id, uint32_t mve_number,
|
||||
uint32_t state);
|
||||
int64_t opal_pci_get_xive_reissue(uint64_t phb_id, uint32_t xive_number,
|
||||
uint8_t *p_bit, uint8_t *q_bit);
|
||||
int64_t opal_pci_set_xive_reissue(uint64_t phb_id, uint32_t xive_number,
|
||||
uint8_t p_bit, uint8_t q_bit);
|
||||
int64_t opal_pci_set_xive_pe(uint64_t phb_id, uint32_t pe_number,
|
||||
uint32_t xive_num);
|
||||
int64_t opal_get_xive_source(uint64_t phb_id, uint32_t xive_num,
|
||||
int32_t *interrupt_source_number);
|
||||
int64_t opal_get_msi_32(uint64_t phb_id, uint32_t mve_number, uint32_t xive_num,
|
||||
uint8_t msi_range, uint32_t *msi_address,
|
||||
uint32_t *message_data);
|
||||
int64_t opal_get_msi_64(uint64_t phb_id, uint32_t mve_number,
|
||||
uint32_t xive_num, uint8_t msi_range,
|
||||
uint64_t *msi_address, uint32_t *message_data);
|
||||
int64_t opal_start_cpu(uint64_t thread_number, uint64_t start_address);
|
||||
int64_t opal_query_cpu_status(uint64_t thread_number, uint8_t *thread_status);
|
||||
int64_t opal_write_oppanel(oppanel_line_t *lines, uint64_t num_lines);
|
||||
int64_t opal_pci_map_pe_dma_window(uint64_t phb_id, uint16_t pe_number, uint16_t window_id,
|
||||
uint16_t tce_levels, uint64_t tce_table_addr,
|
||||
uint64_t tce_table_size, uint64_t tce_page_size);
|
||||
int64_t opal_pci_map_pe_dma_window_real(uint64_t phb_id, uint16_t pe_number,
|
||||
uint16_t dma_window_number, uint64_t pci_start_addr,
|
||||
uint64_t pci_mem_size);
|
||||
int64_t opal_pci_reset(uint64_t phb_id, uint8_t reset_scope, uint8_t assert_state);
|
||||
|
||||
/* Internal functions */
|
||||
extern int early_init_dt_scan_opal(unsigned long node, const char *uname, int depth, void *data);
|
||||
|
||||
extern int opal_get_chars(uint32_t vtermno, char *buf, int count);
|
||||
extern int opal_put_chars(uint32_t vtermno, const char *buf, int total_len);
|
||||
|
||||
extern void hvc_opal_init_early(void);
|
||||
|
||||
/* Internal functions */
|
||||
extern int early_init_dt_scan_opal(unsigned long node, const char *uname,
|
||||
int depth, void *data);
|
||||
|
||||
#endif /* __ASSEMBLY__ */
|
||||
|
||||
#endif /* __OPAL_H */
|
||||
|
|
|
|||
|
|
@ -54,6 +54,8 @@
|
|||
#include <asm/pci-bridge.h>
|
||||
#include <asm/phyp_dump.h>
|
||||
#include <asm/kexec.h>
|
||||
#include <asm/opal.h>
|
||||
|
||||
#include <mm/mmu_decl.h>
|
||||
|
||||
#ifdef DEBUG
|
||||
|
|
@ -707,6 +709,11 @@ void __init early_init_devtree(void *params)
|
|||
of_scan_flat_dt(early_init_dt_scan_rtas, NULL);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_PPC_POWERNV
|
||||
/* Some machines might need OPAL info for debugging, grab it now. */
|
||||
of_scan_flat_dt(early_init_dt_scan_opal, NULL);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_PHYP_DUMP
|
||||
/* scan tree to see if dump occurred during last boot */
|
||||
of_scan_flat_dt(early_init_dt_scan_phyp_dump, NULL);
|
||||
|
|
|
|||
|
|
@ -1,11 +1,16 @@
|
|||
config PPC_POWERNV
|
||||
depends on PPC64 && PPC_BOOK3S
|
||||
bool "IBM PowerNV (Non-Virtualized) platform support"
|
||||
select PPC_RTAS
|
||||
select PPC_NATIVE
|
||||
select PPC_XICS
|
||||
select PPC_ICP_NATIVE
|
||||
select PPC_ICS_RTAS
|
||||
select PPC_P7_NAP
|
||||
select PPC_PCI_CHOICE if EMBEDDED
|
||||
default y
|
||||
|
||||
config PPC_POWERNV_RTAS
|
||||
depends on PPC_POWERNV
|
||||
bool "Support for RTAS based PowerNV platforms such as BML"
|
||||
default y
|
||||
select PPC_ICS_RTAS
|
||||
select PPC_RTAS
|
||||
|
|
|
|||
|
|
@ -1,2 +1,2 @@
|
|||
obj-y += setup.o opal-takeover.o
|
||||
obj-y += setup.o opal-takeover.o opal-wrappers.o opal.o
|
||||
obj-$(CONFIG_SMP) += smp.o
|
||||
|
|
|
|||
|
|
@ -0,0 +1,101 @@
|
|||
/*
|
||||
* PowerNV OPAL API wrappers
|
||||
*
|
||||
* Copyright 2011 IBM Corp.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License
|
||||
* as published by the Free Software Foundation; either version
|
||||
* 2 of the License, or (at your option) any later version.
|
||||
*/
|
||||
|
||||
#include <asm/ppc_asm.h>
|
||||
#include <asm/hvcall.h>
|
||||
#include <asm/asm-offsets.h>
|
||||
#include <asm/opal.h>
|
||||
|
||||
/* TODO:
|
||||
*
|
||||
* - Trace irqs in/off (needs saving/restoring all args, argh...)
|
||||
* - Get r11 feed up by Dave so I can have better register usage
|
||||
*/
|
||||
#define OPAL_CALL(name, token) \
|
||||
_GLOBAL(name); \
|
||||
mflr r0; \
|
||||
mfcr r12; \
|
||||
std r0,16(r1); \
|
||||
std r12,8(r1); \
|
||||
std r1,PACAR1(r13); \
|
||||
li r0,0; \
|
||||
mfmsr r12; \
|
||||
ori r0,r0,MSR_EE; \
|
||||
std r12,PACASAVEDMSR(r13); \
|
||||
andc r12,r12,r0; \
|
||||
mtmsrd r12,1; \
|
||||
LOAD_REG_ADDR(r0,.opal_return); \
|
||||
mtlr r0; \
|
||||
li r0,MSR_DR|MSR_IR; \
|
||||
andc r12,r12,r0; \
|
||||
li r0,token; \
|
||||
mtspr SPRN_HSRR1,r12; \
|
||||
LOAD_REG_ADDR(r11,opal); \
|
||||
ld r12,8(r11); \
|
||||
ld r2,0(r11); \
|
||||
mtspr SPRN_HSRR0,r12; \
|
||||
hrfid
|
||||
|
||||
_STATIC(opal_return)
|
||||
ld r2,PACATOC(r13);
|
||||
ld r4,8(r1);
|
||||
ld r5,16(r1);
|
||||
ld r6,PACASAVEDMSR(r13);
|
||||
mtspr SPRN_SRR0,r5;
|
||||
mtspr SPRN_SRR1,r6;
|
||||
mtcr r4;
|
||||
rfid
|
||||
|
||||
OPAL_CALL(opal_console_write, OPAL_CONSOLE_WRITE);
|
||||
OPAL_CALL(opal_console_read, OPAL_CONSOLE_READ);
|
||||
OPAL_CALL(opal_console_write_buffer_space, OPAL_CONSOLE_WRITE_BUFFER_SPACE);
|
||||
OPAL_CALL(opal_rtc_read, OPAL_RTC_READ);
|
||||
OPAL_CALL(opal_rtc_write, OPAL_RTC_WRITE);
|
||||
OPAL_CALL(opal_cec_power_down, OPAL_CEC_POWER_DOWN);
|
||||
OPAL_CALL(opal_cec_reboot, OPAL_CEC_REBOOT);
|
||||
OPAL_CALL(opal_read_nvram, OPAL_READ_NVRAM);
|
||||
OPAL_CALL(opal_write_nvram, OPAL_WRITE_NVRAM);
|
||||
OPAL_CALL(opal_handle_interrupt, OPAL_HANDLE_INTERRUPT);
|
||||
OPAL_CALL(opal_poll_events, OPAL_POLL_EVENTS);
|
||||
OPAL_CALL(opal_pci_set_hub_tce_memory, OPAL_PCI_SET_HUB_TCE_MEMORY);
|
||||
OPAL_CALL(opal_pci_set_phb_tce_memory, OPAL_PCI_SET_PHB_TCE_MEMORY);
|
||||
OPAL_CALL(opal_pci_config_read_byte, OPAL_PCI_CONFIG_READ_BYTE);
|
||||
OPAL_CALL(opal_pci_config_read_half_word, OPAL_PCI_CONFIG_READ_HALF_WORD);
|
||||
OPAL_CALL(opal_pci_config_read_word, OPAL_PCI_CONFIG_READ_WORD);
|
||||
OPAL_CALL(opal_pci_config_write_byte, OPAL_PCI_CONFIG_WRITE_BYTE);
|
||||
OPAL_CALL(opal_pci_config_write_half_word, OPAL_PCI_CONFIG_WRITE_HALF_WORD);
|
||||
OPAL_CALL(opal_pci_config_write_word, OPAL_PCI_CONFIG_WRITE_WORD);
|
||||
OPAL_CALL(opal_set_xive, OPAL_SET_XIVE);
|
||||
OPAL_CALL(opal_get_xive, OPAL_GET_XIVE);
|
||||
OPAL_CALL(opal_register_exception_handler, OPAL_REGISTER_OPAL_EXCEPTION_HANDLER);
|
||||
OPAL_CALL(opal_pci_eeh_freeze_status, OPAL_PCI_EEH_FREEZE_STATUS);
|
||||
OPAL_CALL(opal_pci_eeh_freeze_clear, OPAL_PCI_EEH_FREEZE_CLEAR);
|
||||
OPAL_CALL(opal_pci_shpc, OPAL_PCI_SHPC);
|
||||
OPAL_CALL(opal_pci_phb_mmio_enable, OPAL_PCI_PHB_MMIO_ENABLE);
|
||||
OPAL_CALL(opal_pci_set_phb_mem_window, OPAL_PCI_SET_PHB_MEM_WINDOW);
|
||||
OPAL_CALL(opal_pci_map_pe_mmio_window, OPAL_PCI_MAP_PE_MMIO_WINDOW);
|
||||
OPAL_CALL(opal_pci_set_phb_table_memory, OPAL_PCI_SET_PHB_TABLE_MEMORY);
|
||||
OPAL_CALL(opal_pci_set_pe, OPAL_PCI_SET_PE);
|
||||
OPAL_CALL(opal_pci_set_peltv, OPAL_PCI_SET_PELTV);
|
||||
OPAL_CALL(opal_pci_set_mve, OPAL_PCI_SET_MVE);
|
||||
OPAL_CALL(opal_pci_set_mve_enable, OPAL_PCI_SET_MVE_ENABLE);
|
||||
OPAL_CALL(opal_pci_get_xive_reissue, OPAL_PCI_GET_XIVE_REISSUE);
|
||||
OPAL_CALL(opal_pci_set_xive_reissue, OPAL_PCI_SET_XIVE_REISSUE);
|
||||
OPAL_CALL(opal_pci_set_xive_pe, OPAL_PCI_SET_XIVE_PE);
|
||||
OPAL_CALL(opal_get_xive_source, OPAL_GET_XIVE_SOURCE);
|
||||
OPAL_CALL(opal_get_msi_32, OPAL_GET_MSI_32);
|
||||
OPAL_CALL(opal_get_msi_64, OPAL_GET_MSI_64);
|
||||
OPAL_CALL(opal_start_cpu, OPAL_START_CPU);
|
||||
OPAL_CALL(opal_query_cpu_status, OPAL_QUERY_CPU_STATUS);
|
||||
OPAL_CALL(opal_write_oppanel, OPAL_WRITE_OPPANEL);
|
||||
OPAL_CALL(opal_pci_map_pe_dma_window, OPAL_PCI_MAP_PE_DMA_WINDOW);
|
||||
OPAL_CALL(opal_pci_map_pe_dma_window_real, OPAL_PCI_MAP_PE_DMA_WINDOW_REAL);
|
||||
OPAL_CALL(opal_pci_reset, OPAL_PCI_RESET);
|
||||
|
|
@ -0,0 +1,154 @@
|
|||
/*
|
||||
* PowerNV OPAL high level interfaces
|
||||
*
|
||||
* Copyright 2011 IBM Corp.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License
|
||||
* as published by the Free Software Foundation; either version
|
||||
* 2 of the License, or (at your option) any later version.
|
||||
*/
|
||||
|
||||
#undef DEBUG
|
||||
|
||||
#include <linux/types.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <asm/opal.h>
|
||||
#include <asm/firmware.h>
|
||||
|
||||
#include "powernv.h"
|
||||
|
||||
struct opal {
|
||||
u64 base;
|
||||
u64 entry;
|
||||
} opal;
|
||||
|
||||
static struct device_node *opal_node;
|
||||
static DEFINE_SPINLOCK(opal_write_lock);
|
||||
|
||||
int __init early_init_dt_scan_opal(unsigned long node,
|
||||
const char *uname, int depth, void *data)
|
||||
{
|
||||
const void *basep, *entryp;
|
||||
unsigned long basesz, entrysz;
|
||||
|
||||
if (depth != 1 || strcmp(uname, "ibm,opal") != 0)
|
||||
return 0;
|
||||
|
||||
basep = of_get_flat_dt_prop(node, "opal-base-address", &basesz);
|
||||
entryp = of_get_flat_dt_prop(node, "opal-entry-address", &entrysz);
|
||||
|
||||
if (!basep || !entryp)
|
||||
return 1;
|
||||
|
||||
opal.base = of_read_number(basep, basesz/4);
|
||||
opal.entry = of_read_number(entryp, entrysz/4);
|
||||
|
||||
pr_debug("OPAL Base = 0x%llx (basep=%p basesz=%ld)\n",
|
||||
opal.base, basep, basesz);
|
||||
pr_debug("OPAL Entry = 0x%llx (entryp=%p basesz=%ld)\n",
|
||||
opal.entry, entryp, entrysz);
|
||||
|
||||
powerpc_firmware_features |= FW_FEATURE_OPAL;
|
||||
if (of_flat_dt_is_compatible(node, "ibm,opal-v2")) {
|
||||
powerpc_firmware_features |= FW_FEATURE_OPALv2;
|
||||
printk("OPAL V2 detected !\n");
|
||||
} else {
|
||||
printk("OPAL V1 detected !\n");
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
int opal_get_chars(uint32_t vtermno, char *buf, int count)
|
||||
{
|
||||
s64 len, rc;
|
||||
u64 evt;
|
||||
|
||||
if (!opal.entry)
|
||||
return 0;
|
||||
opal_poll_events(&evt);
|
||||
if ((evt & OPAL_EVENT_CONSOLE_INPUT) == 0)
|
||||
return 0;
|
||||
len = count;
|
||||
rc = opal_console_read(vtermno, &len, buf);
|
||||
if (rc == OPAL_SUCCESS)
|
||||
return len;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int opal_put_chars(uint32_t vtermno, const char *data, int total_len)
|
||||
{
|
||||
int written = 0;
|
||||
s64 len, rc = OPAL_BUSY;
|
||||
unsigned long flags;
|
||||
u64 evt;
|
||||
|
||||
if (!opal.entry)
|
||||
return 0;
|
||||
|
||||
/* We want put_chars to be atomic to avoid mangling of hvsi
|
||||
* packets. To do that, we first test for room and return
|
||||
* -EAGAIN if there isn't enough
|
||||
*/
|
||||
spin_lock_irqsave(&opal_write_lock, flags);
|
||||
rc = opal_console_write_buffer_space(vtermno, &len);
|
||||
if (rc || len < total_len) {
|
||||
spin_unlock_irqrestore(&opal_write_lock, flags);
|
||||
/* Closed -> drop characters */
|
||||
if (rc)
|
||||
return total_len;
|
||||
opal_poll_events(&evt);
|
||||
return -EAGAIN;
|
||||
}
|
||||
|
||||
/* We still try to handle partial completions, though they
|
||||
* should no longer happen.
|
||||
*/
|
||||
while(total_len > 0 && (rc == OPAL_BUSY ||
|
||||
rc == OPAL_BUSY_EVENT || rc == OPAL_SUCCESS)) {
|
||||
len = total_len;
|
||||
rc = opal_console_write(vtermno, &len, data);
|
||||
if (rc == OPAL_SUCCESS) {
|
||||
total_len -= len;
|
||||
data += len;
|
||||
written += len;
|
||||
}
|
||||
/* This is a bit nasty but we need that for the console to
|
||||
* flush when there aren't any interrupts. We will clean
|
||||
* things a bit later to limit that to synchronous path
|
||||
* such as the kernel console and xmon/udbg
|
||||
*/
|
||||
do
|
||||
opal_poll_events(&evt);
|
||||
while(rc == OPAL_SUCCESS && (evt & OPAL_EVENT_CONSOLE_OUTPUT));
|
||||
}
|
||||
spin_unlock_irqrestore(&opal_write_lock, flags);
|
||||
return written;
|
||||
}
|
||||
|
||||
static int __init opal_init(void)
|
||||
{
|
||||
struct device_node *np, *consoles;
|
||||
|
||||
opal_node = of_find_node_by_path("/ibm,opal");
|
||||
if (!opal_node) {
|
||||
pr_warn("opal: Node not found\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
if (firmware_has_feature(FW_FEATURE_OPALv2))
|
||||
consoles = of_find_node_by_path("/ibm,opal/consoles");
|
||||
else
|
||||
consoles = of_node_get(opal_node);
|
||||
|
||||
/* Register serial ports */
|
||||
for_each_child_of_node(consoles, np) {
|
||||
if (strcmp(np->name, "serial"))
|
||||
continue;
|
||||
of_platform_device_create(np, NULL, NULL);
|
||||
}
|
||||
of_node_put(consoles);
|
||||
return 0;
|
||||
}
|
||||
subsys_initcall(opal_init);
|
||||
|
|
@ -74,6 +74,12 @@ static void pnv_show_cpuinfo(struct seq_file *m)
|
|||
if (root)
|
||||
model = of_get_property(root, "model", NULL);
|
||||
seq_printf(m, "machine\t\t: PowerNV %s\n", model);
|
||||
if (firmware_has_feature(FW_FEATURE_OPALv2))
|
||||
seq_printf(m, "firmware\t: OPAL v2\n");
|
||||
else if (firmware_has_feature(FW_FEATURE_OPAL))
|
||||
seq_printf(m, "firmware\t: OPAL v1\n");
|
||||
else
|
||||
seq_printf(m, "firmware\t: BML\n");
|
||||
of_node_put(root);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -30,6 +30,7 @@
|
|||
#include <asm/vdso_datapage.h>
|
||||
#include <asm/cputhreads.h>
|
||||
#include <asm/xics.h>
|
||||
#include <asm/opal.h>
|
||||
|
||||
#include "powernv.h"
|
||||
|
||||
|
|
@ -62,6 +63,28 @@ static int pnv_smp_cpu_bootable(unsigned int nr)
|
|||
return 1;
|
||||
}
|
||||
|
||||
int __devinit pnv_smp_kick_cpu(int nr)
|
||||
{
|
||||
unsigned int pcpu = get_hard_smp_processor_id(nr);
|
||||
unsigned long start_here = __pa(*((unsigned long *)
|
||||
generic_secondary_smp_init));
|
||||
long rc;
|
||||
|
||||
BUG_ON(nr < 0 || nr >= NR_CPUS);
|
||||
|
||||
/* On OPAL v2 the CPU are still spinning inside OPAL itself,
|
||||
* get them back now
|
||||
*/
|
||||
if (firmware_has_feature(FW_FEATURE_OPALv2)) {
|
||||
pr_devel("OPAL: Starting CPU %d (HW 0x%x)...\n", nr, pcpu);
|
||||
rc = opal_start_cpu(pcpu, start_here);
|
||||
if (rc != OPAL_SUCCESS)
|
||||
pr_warn("OPAL Error %ld starting CPU %d\n",
|
||||
rc, nr);
|
||||
}
|
||||
return smp_generic_kick_cpu(nr);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_HOTPLUG_CPU
|
||||
|
||||
static int pnv_smp_cpu_disable(void)
|
||||
|
|
@ -127,7 +150,7 @@ static struct smp_ops_t pnv_smp_ops = {
|
|||
.message_pass = smp_muxed_ipi_message_pass,
|
||||
.cause_ipi = NULL, /* Filled at runtime by xics_smp_probe() */
|
||||
.probe = xics_smp_probe,
|
||||
.kick_cpu = smp_generic_kick_cpu,
|
||||
.kick_cpu = pnv_smp_kick_cpu,
|
||||
.setup_cpu = pnv_smp_setup_cpu,
|
||||
.cpu_bootable = pnv_smp_cpu_bootable,
|
||||
#ifdef CONFIG_HOTPLUG_CPU
|
||||
|
|
|
|||
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