Angel Pons has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/49167 ) Change subject: sb/intel/bd82x6x/pch.c: Extract common functions ...................................................................... sb/intel/bd82x6x/pch.c: Extract common functions PCH identification functions and `pch_iobp_update` are used in multiple stages. Move them out of `pch.c` to drop some ugly preprocessor usage. Subsequent commits will use `pch_iobp_update` in romstage as well. Change-Id: I8d33338a4f74fd03c8f99f8fcece99b63c28adab Signed-off-by: Angel Pons <th3fanbus@gmail.com> --- M src/southbridge/intel/bd82x6x/Makefile.inc A src/southbridge/intel/bd82x6x/common.c M src/southbridge/intel/bd82x6x/pch.c M src/southbridge/intel/bd82x6x/pch.h 4 files changed, 122 insertions(+), 119 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/67/49167/1 diff --git a/src/southbridge/intel/bd82x6x/Makefile.inc b/src/southbridge/intel/bd82x6x/Makefile.inc index 687fc97..469a50e 100644 --- a/src/southbridge/intel/bd82x6x/Makefile.inc +++ b/src/southbridge/intel/bd82x6x/Makefile.inc @@ -7,6 +7,7 @@ ramstage-y += pch.c ramstage-y += azalia.c +ramstage-y += common.c ramstage-y += fadt.c ramstage-y += lpc.c ramstage-y += pci.c @@ -26,8 +27,9 @@ ramstage-$(CONFIG_ELOG) += elog.c -smm-y += smihandler.c me.c me_8.x.c pch.c me_common.c +smm-y += common.c smihandler.c me.c me_8.x.c me_common.c +romstage-y += common.c romstage-y += me_status.c romstage-y += early_rcba.c romstage-y += early_pch.c diff --git a/src/southbridge/intel/bd82x6x/common.c b/src/southbridge/intel/bd82x6x/common.c new file mode 100644 index 0000000..7480174 --- /dev/null +++ b/src/southbridge/intel/bd82x6x/common.c @@ -0,0 +1,118 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#define __SIMPLE_DEVICE__ + +#include <console/console.h> +#include <delay.h> +#include <device/pci.h> +#include <device/pci_def.h> +#include <device/pci_ops.h> +#include <stdint.h> + +#include "pch.h" + +int pch_silicon_revision(void) +{ + static int pch_revision_id = -1; + + if (pch_revision_id < 0) + pch_revision_id = pci_read_config8(PCH_LPC_DEV, PCI_REVISION_ID); + + return pch_revision_id; +} + +int pch_silicon_type(void) +{ + static int pch_type = -1; + + if (pch_type < 0) + pch_type = pci_read_config8(PCH_LPC_DEV, PCI_DEVICE_ID + 1); + + return pch_type; +} + +int pch_silicon_supported(int type, int rev) +{ + int cur_type = pch_silicon_type(); + int cur_rev = pch_silicon_revision(); + + switch (type) { + case PCH_TYPE_CPT: + /* CougarPoint minimum revision */ + if (cur_type == PCH_TYPE_CPT && cur_rev >= rev) + return 1; + /* PantherPoint any revision */ + if (cur_type == PCH_TYPE_PPT) + return 1; + break; + + case PCH_TYPE_PPT: + /* PantherPoint minimum revision */ + if (cur_type == PCH_TYPE_PPT && cur_rev >= rev) + return 1; + break; + } + + return 0; +} + +#define IOBP_RETRY 1000 +static inline int iobp_poll(void) +{ + unsigned int try = IOBP_RETRY; + u32 data; + + while (try--) { + data = RCBA32(IOBPS); + if ((data & 1) == 0) + return 1; + udelay(10); + } + + printk(BIOS_ERR, "IOBP timeout\n"); + return 0; +} + +void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue) +{ + u32 data; + + /* Set the address */ + RCBA32(IOBPIRI) = address; + + /* READ OPCODE */ + if (pch_silicon_supported(PCH_TYPE_CPT, PCH_STEP_B0)) + RCBA32(IOBPS) = IOBPS_RW_BX; + else + RCBA32(IOBPS) = IOBPS_READ_AX; + if (!iobp_poll()) + return; + + /* Read IOBP data */ + data = RCBA32(IOBPD); + if (!iobp_poll()) + return; + + /* Check for successful transaction */ + if ((RCBA32(IOBPS) & 0x6) != 0) { + printk(BIOS_ERR, "IOBP read 0x%08x failed\n", address); + return; + } + + /* Update the data */ + data &= andvalue; + data |= orvalue; + + /* WRITE OPCODE */ + if (pch_silicon_supported(PCH_TYPE_CPT, PCH_STEP_B0)) + RCBA32(IOBPS) = IOBPS_RW_BX; + else + RCBA32(IOBPS) = IOBPS_WRITE_AX; + if (!iobp_poll()) + return; + + /* Write IOBP data */ + RCBA32(IOBPD) = data; + if (!iobp_poll()) + return; +} diff --git a/src/southbridge/intel/bd82x6x/pch.c b/src/southbridge/intel/bd82x6x/pch.c index 82b95f6..1c8786d 100644 --- a/src/southbridge/intel/bd82x6x/pch.c +++ b/src/southbridge/intel/bd82x6x/pch.c @@ -11,123 +11,6 @@ #include "chip.h" #include "pch.h" -int pch_silicon_revision(void) -{ - static int pch_revision_id = -1; - -#ifdef __SIMPLE_DEVICE__ - pci_devfn_t dev = PCI_DEV(0, 0x1f, 0); -#else - struct device *dev = pcidev_on_root(0x1f, 0); -#endif - - if (pch_revision_id < 0) - pch_revision_id = pci_read_config8(dev, PCI_REVISION_ID); - return pch_revision_id; -} - -int pch_silicon_type(void) -{ - static int pch_type = -1; - -#ifdef __SIMPLE_DEVICE__ - pci_devfn_t dev = PCI_DEV(0, 0x1f, 0); -#else - struct device *dev = pcidev_on_root(0x1f, 0); -#endif - - if (pch_type < 0) - pch_type = pci_read_config8(dev, PCI_DEVICE_ID + 1); - return pch_type; -} - -static int pch_silicon_supported(int type, int rev) -{ - int cur_type = pch_silicon_type(); - int cur_rev = pch_silicon_revision(); - - switch (type) { - case PCH_TYPE_CPT: - /* CougarPoint minimum revision */ - if (cur_type == PCH_TYPE_CPT && cur_rev >= rev) - return 1; - /* PantherPoint any revision */ - if (cur_type == PCH_TYPE_PPT) - return 1; - break; - - case PCH_TYPE_PPT: - /* PantherPoint minimum revision */ - if (cur_type == PCH_TYPE_PPT && cur_rev >= rev) - return 1; - break; - } - - return 0; -} - -#define IOBP_RETRY 1000 -static inline int iobp_poll(void) -{ - unsigned int try = IOBP_RETRY; - u32 data; - - while (try--) { - data = RCBA32(IOBPS); - if ((data & 1) == 0) - return 1; - udelay(10); - } - - printk(BIOS_ERR, "IOBP timeout\n"); - return 0; -} - -void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue) -{ - u32 data; - - /* Set the address */ - RCBA32(IOBPIRI) = address; - - /* READ OPCODE */ - if (pch_silicon_supported(PCH_TYPE_CPT, PCH_STEP_B0)) - RCBA32(IOBPS) = IOBPS_RW_BX; - else - RCBA32(IOBPS) = IOBPS_READ_AX; - if (!iobp_poll()) - return; - - /* Read IOBP data */ - data = RCBA32(IOBPD); - if (!iobp_poll()) - return; - - /* Check for successful transaction */ - if ((RCBA32(IOBPS) & 0x6) != 0) { - printk(BIOS_ERR, "IOBP read 0x%08x failed\n", address); - return; - } - - /* Update the data */ - data &= andvalue; - data |= orvalue; - - /* WRITE OPCODE */ - if (pch_silicon_supported(PCH_TYPE_CPT, PCH_STEP_B0)) - RCBA32(IOBPS) = IOBPS_RW_BX; - else - RCBA32(IOBPS) = IOBPS_WRITE_AX; - if (!iobp_poll()) - return; - - /* Write IOBP data */ - RCBA32(IOBPD) = data; - if (!iobp_poll()) - return; -} - -#ifndef __SIMPLE_DEVICE__ /* Set bit in function disable register to hide this device */ static void pch_hide_devfn(unsigned int devfn) { @@ -426,4 +309,3 @@ CHIP_NAME("Intel Series 6/7 (Cougar Point/Panther Point) Southbridge") .enable_dev = pch_enable, }; -#endif diff --git a/src/southbridge/intel/bd82x6x/pch.h b/src/southbridge/intel/bd82x6x/pch.h index 1840a2b..dcab839 100644 --- a/src/southbridge/intel/bd82x6x/pch.h +++ b/src/southbridge/intel/bd82x6x/pch.h @@ -42,6 +42,7 @@ int pch_silicon_revision(void); int pch_silicon_type(void); +int pch_silicon_supported(int type, int rev); void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue); void enable_usb_bar(void); -- To view, visit https://review.coreboot.org/c/coreboot/+/49167 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I8d33338a4f74fd03c8f99f8fcece99b63c28adab Gerrit-Change-Number: 49167 Gerrit-PatchSet: 1 Gerrit-Owner: Angel Pons <th3fanbus@gmail.com> Gerrit-Reviewer: Martin Roth <martinroth@google.com> Gerrit-Reviewer: Patrick Georgi <pgeorgi@google.com> Gerrit-Reviewer: Patrick Rudolph <siro@das-labor.org> Gerrit-MessageType: newchange