diff options
Diffstat (limited to 'src/soc/intel/broadwell/pch')
| -rw-r--r-- | src/soc/intel/broadwell/pch/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/intel/broadwell/pch/acpi.c | 109 | ||||
| -rw-r--r-- | src/soc/intel/broadwell/pch/acpi/adsp.asl | 6 | ||||
| -rw-r--r-- | src/soc/intel/broadwell/pch/acpi/serialio.asl | 153 | ||||
| -rw-r--r-- | src/soc/intel/broadwell/pch/lpc.c | 15 |
5 files changed, 162 insertions, 122 deletions
diff --git a/src/soc/intel/broadwell/pch/Makefile.inc b/src/soc/intel/broadwell/pch/Makefile.inc index 1afa92b581..4e8384fbc8 100644 --- a/src/soc/intel/broadwell/pch/Makefile.inc +++ b/src/soc/intel/broadwell/pch/Makefile.inc @@ -1,5 +1,6 @@ bootblock-y += bootblock.c +ramstage-y += acpi.c ramstage-y += adsp.c romstage-y += early_pch.c ramstage-$(CONFIG_ELOG) += elog.c diff --git a/src/soc/intel/broadwell/pch/acpi.c b/src/soc/intel/broadwell/pch/acpi.c new file mode 100644 index 0000000000..85726b06e4 --- /dev/null +++ b/src/soc/intel/broadwell/pch/acpi.c @@ -0,0 +1,109 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <acpi/acpi.h> +#include <acpi/acpi_gnvs.h> +#include <acpi/acpigen.h> +#include <soc/device_nvs.h> +#include <soc/pch.h> +#include <types.h> +#include <version.h> + +static void acpi_write_serialio_psx_methods(const char *const name, const uint32_t bar1) +{ + const char *const spcs = "SPCS"; + const unsigned int spcs_bits = 32; + const unsigned long offset = bar1 + 0x84; + const uint8_t flags = FIELD_DWORDACC | FIELD_NOLOCK | FIELD_PRESERVE; + const struct opregion op_reg = OPREGION("SPRT", SYSTEMMEMORY, offset, spcs_bits / 8); + const struct fieldlist field = FIELDLIST_NAMESTR(spcs, spcs_bits); + + acpigen_write_scope(name); + { + acpigen_write_opregion(&op_reg); + acpigen_write_field(op_reg.name, &field, 1, flags); + + acpigen_write_method_serialized("_PS0", 0); + { + /* SPCS &= 0xfffffffc */ + acpigen_emit_byte(AND_OP); + acpigen_emit_namestring(spcs); + acpigen_write_dword(0xfffffffc); + acpigen_emit_namestring(spcs); + + /* Do a posting read after writing */ + acpigen_write_store(); + acpigen_emit_namestring(spcs); + acpigen_emit_byte(LOCAL0_OP); + } + acpigen_pop_len(); + + acpigen_write_method_serialized("_PS3", 0); + { + /* SPCS |= 3 */ + acpigen_emit_byte(OR_OP); + acpigen_emit_namestring(spcs); + acpigen_write_byte(3); + acpigen_emit_namestring(spcs); + + /* Do a posting read after writing */ + acpigen_write_store(); + acpigen_emit_namestring(spcs); + acpigen_emit_byte(LOCAL0_OP); + } + acpigen_pop_len(); + } + acpigen_pop_len(); +} + +static void acpi_create_serialio_ssdt_entry(int sio_index, struct device_nvs *dev_nvs) +{ + const char idx = '0' + sio_index; + const char sxen[5] = { 'S', idx, 'E', 'N', '\0' }; + acpigen_write_name_byte(sxen, dev_nvs->enable[sio_index]); + + const char sxb0[5] = { 'S', idx, 'B', '0', '\0' }; + acpigen_write_name_dword(sxb0, dev_nvs->bar0[sio_index]); + + const char sxb1[5] = { 'S', idx, 'B', '1', '\0' }; + acpigen_write_name_dword(sxb1, dev_nvs->bar1[sio_index]); +} + +void acpi_create_serialio_ssdt(acpi_header_t *ssdt) +{ + unsigned long current = (unsigned long)ssdt + sizeof(acpi_header_t); + struct device_nvs *dev_nvs = acpi_get_device_nvs(); + if (!dev_nvs) + return; + + /* Fill the SSDT header */ + memset((void *)ssdt, 0, sizeof(acpi_header_t)); + memcpy(&ssdt->signature, "SSDT", 4); + ssdt->revision = get_acpi_table_revision(SSDT); + memcpy(&ssdt->oem_id, OEM_ID, 6); + memcpy(&ssdt->oem_table_id, "SERIALIO", 8); + ssdt->oem_revision = 43; + memcpy(&ssdt->asl_compiler_id, ASLC, 4); + ssdt->asl_compiler_revision = asl_revision; + ssdt->length = sizeof(acpi_header_t); + acpigen_set_current((char *)current); + + /* Fill the SSDT with an entry for each SerialIO device */ + for (int id = 0; id < 9; id++) + acpi_create_serialio_ssdt_entry(id, dev_nvs); + + acpigen_write_scope("\\_SB.PCI0"); + { + acpi_write_serialio_psx_methods("I2C0", dev_nvs->bar1[SIO_NVS_I2C0]); + acpi_write_serialio_psx_methods("I2C1", dev_nvs->bar1[SIO_NVS_I2C1]); + acpi_write_serialio_psx_methods("SPI0", dev_nvs->bar1[SIO_NVS_SPI0]); + acpi_write_serialio_psx_methods("SPI1", dev_nvs->bar1[SIO_NVS_SPI1]); + acpi_write_serialio_psx_methods("UAR0", dev_nvs->bar1[SIO_NVS_UART0]); + acpi_write_serialio_psx_methods("UAR1", dev_nvs->bar1[SIO_NVS_UART1]); + } + acpigen_pop_len(); + + /* (Re)calculate length and checksum. */ + current = (unsigned long)acpigen_get_current(); + ssdt->length = current - (unsigned long)ssdt; + ssdt->checksum = acpi_checksum((void *)ssdt, ssdt->length); +} diff --git a/src/soc/intel/broadwell/pch/acpi/adsp.asl b/src/soc/intel/broadwell/pch/acpi/adsp.asl index 51dd38cd3f..43c0354984 100644 --- a/src/soc/intel/broadwell/pch/acpi/adsp.asl +++ b/src/soc/intel/broadwell/pch/acpi/adsp.asl @@ -1,5 +1,11 @@ /* SPDX-License-Identifier: GPL-2.0-only */ +// This is defined in SSDT2 which is generated at boot based +// on whether or not the device is enabled in ACPI mode. +External (\S8EN) +External (\S8B0) +External (\S8B1) + Device (ADSP) { Method (_HID, 0, Serialized) diff --git a/src/soc/intel/broadwell/pch/acpi/serialio.asl b/src/soc/intel/broadwell/pch/acpi/serialio.asl index 183bca6d55..85c7cf544f 100644 --- a/src/soc/intel/broadwell/pch/acpi/serialio.asl +++ b/src/soc/intel/broadwell/pch/acpi/serialio.asl @@ -5,27 +5,34 @@ // Serial IO Device BAR0 and BAR1 is 4KB #define SIO_BAR_LEN 0x1000 -// Put SerialIO device in D0 state -// Arg0 - Ref to offset 0x84 of device's PCI config space -Method (LPD0, 1, Serialized) -{ - Arg0 = DeRefOf (Arg0) & 0xFFFFFFFC - Local0 = DeRefOf (Arg0) // Read back after writing - - // Use Local0 to avoid iasl warning: Method Local is set but never used - Local0 &= Ones -} - -// Put SerialIO device in D3 state -// Arg0 - Ref to offset 0x84 of device's PCI config space -Method (LPD3, 1, Serialized) -{ - Arg0 = DeRefOf (Arg0) | 0x3 - Local0 = DeRefOf (Arg0) // Read back after writing - - // Use Local0 to avoid iasl warning: Method Local is set but never used - Local0 &= Ones -} +// This is defined in SSDT2 which is generated at boot based +// on whether or not the device is enabled in ACPI mode. +External (\S0EN) +External (\S1EN) +External (\S2EN) +External (\S3EN) +External (\S4EN) +External (\S5EN) +External (\S6EN) +External (\S7EN) + +External (\S0B0) +External (\S1B0) +External (\S2B0) +External (\S3B0) +External (\S4B0) +External (\S5B0) +External (\S6B0) +External (\S7B0) + +External (\S0B1) +External (\S1B1) +External (\S2B1) +External (\S3B1) +External (\S4B1) +External (\S5B1) +External (\S6B1) +External (\S7B1) // Serial IO Resource Consumption for BAR1 Device (SIOR) @@ -196,7 +203,7 @@ Device (I2C0) } // Check if Serial IO DMA Controller is enabled - If (\_SB.PCI0.SDMA._STA != 0) { + If (\S0EN != 0) { Return (ConcatenateResTemplate (RBUF, DBUF)) } Else { Return (RBUF) @@ -211,22 +218,6 @@ Device (I2C0) Return (0xF) } } - - OperationRegion (SPRT, SystemMemory, \S1B1 + 0x84, 4) - Field (SPRT, DWordAcc, NoLock, Preserve) - { - SPCS, 32 - } - - Method (_PS0, 0, Serialized) - { - ^^LPD0 (RefOf (SPCS)) - } - - Method (_PS3, 0, Serialized) - { - ^^LPD3 (RefOf (SPCS)) - } } Device (I2C1) @@ -272,7 +263,7 @@ Device (I2C1) } // Check if Serial IO DMA Controller is enabled - If (\_SB.PCI0.SDMA._STA != 0) { + If (\S0EN != 0) { Return (ConcatenateResTemplate (RBUF, DBUF)) } Else { Return (RBUF) @@ -287,22 +278,6 @@ Device (I2C1) Return (0xF) } } - - OperationRegion (SPRT, SystemMemory, \S2B1 + 0x84, 4) - Field (SPRT, DWordAcc, NoLock, Preserve) - { - SPCS, 32 - } - - Method (_PS0, 0, Serialized) - { - ^^LPD0 (RefOf (SPCS)) - } - - Method (_PS3, 0, Serialized) - { - ^^LPD3 (RefOf (SPCS)) - } } Device (SPI0) @@ -348,22 +323,6 @@ Device (SPI0) Return (0xF) } } - - OperationRegion (SPRT, SystemMemory, \S3B1 + 0x84, 4) - Field (SPRT, DWordAcc, NoLock, Preserve) - { - SPCS, 32 - } - - Method (_PS0, 0, Serialized) - { - ^^LPD0 (RefOf (SPCS)) - } - - Method (_PS3, 0, Serialized) - { - ^^LPD3 (RefOf (SPCS)) - } } Device (SPI1) @@ -406,7 +365,7 @@ Device (SPI1) } // Check if Serial IO DMA Controller is enabled - If (\_SB.PCI0.SDMA._STA != 0) { + If (\S0EN != 0) { Return (ConcatenateResTemplate (RBUF, DBUF)) } Else { Return (RBUF) @@ -421,22 +380,6 @@ Device (SPI1) Return (0xF) } } - - OperationRegion (SPRT, SystemMemory, \S4B1 + 0x84, 4) - Field (SPRT, DWordAcc, NoLock, Preserve) - { - SPCS, 32 - } - - Method (_PS0, 0, Serialized) - { - ^^LPD0 (RefOf (SPCS)) - } - - Method (_PS3, 0, Serialized) - { - ^^LPD3 (RefOf (SPCS)) - } } Device (UAR0) @@ -479,7 +422,7 @@ Device (UAR0) } // Check if Serial IO DMA Controller is enabled - If (\_SB.PCI0.SDMA._STA != 0) { + If (\S0EN != 0) { Return (ConcatenateResTemplate (RBUF, DBUF)) } Else { Return (RBUF) @@ -494,22 +437,6 @@ Device (UAR0) Return (0xF) } } - - OperationRegion (SPRT, SystemMemory, \S5B1 + 0x84, 4) - Field (SPRT, DWordAcc, NoLock, Preserve) - { - SPCS, 32 - } - - Method (_PS0, 0, Serialized) - { - ^^LPD0 (RefOf (SPCS)) - } - - Method (_PS3, 0, Serialized) - { - ^^LPD3 (RefOf (SPCS)) - } } Device (UAR1) @@ -555,22 +482,6 @@ Device (UAR1) Return (0xF) } } - - OperationRegion (SPRT, SystemMemory, \S6B1 + 0x84, 4) - Field (SPRT, DWordAcc, NoLock, Preserve) - { - SPCS, 32 - } - - Method (_PS0, 0, Serialized) - { - ^^LPD0 (RefOf (SPCS)) - } - - Method (_PS3, 0, Serialized) - { - ^^LPD3 (RefOf (SPCS)) - } } Device (SDIO) diff --git a/src/soc/intel/broadwell/pch/lpc.c b/src/soc/intel/broadwell/pch/lpc.c index 4b4aa9f36c..f62394b4b9 100644 --- a/src/soc/intel/broadwell/pch/lpc.c +++ b/src/soc/intel/broadwell/pch/lpc.c @@ -600,6 +600,16 @@ static void pch_lpc_read_resources(struct device *dev) pch_lpc_add_io_resources(dev); } +static unsigned long acpi_write_serialio_ssdt(unsigned long current, struct acpi_rsdp *rsdp) +{ + printk(BIOS_DEBUG, "ACPI: * SSDT2\n"); + acpi_header_t *ssdt = (acpi_header_t *)current; + acpi_create_serialio_ssdt(ssdt); + current += ssdt->length; + acpi_add_table(rsdp, ssdt); + return acpi_align_current(current); +} + static unsigned long broadwell_write_acpi_tables(const struct device *device, unsigned long current, struct acpi_rsdp *rsdp) @@ -610,7 +620,10 @@ static unsigned long broadwell_write_acpi_tables(const struct device *device, PCH_DEV_UART1 : PCH_DEV_UART0, ACPI_ACCESS_SIZE_DWORD_ACCESS); } - return acpi_write_hpet(device, current, rsdp); + current = acpi_write_hpet(device, current, rsdp); + current = acpi_align_current(current); + current = acpi_write_serialio_ssdt(current, rsdp); + return current; } static struct device_operations device_ops = { |