diff options
author | Arthur Heymans <arthur@aheymans.xyz> | 2019-11-19 18:37:28 +0100 |
---|---|---|
committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-11-21 06:38:45 +0000 |
commit | c2c634a089fa990418c363e2ff2e5ff70bdd3580 (patch) | |
tree | 042e376cee473f72f143ed76768f50536ab323ef /src/southbridge/intel/fsp_rangeley/spi.c | |
parent | 298619f6d9adde49b4279c906b0d20a41f919a61 (diff) |
nb/sb/cpu: Drop Intel Rangeley support
Relocatable ramstage, postcar stage and C_ENVIRONMENT_BOOTBLOCK are
now mandatory features, which this platform lacks.
Change-Id: I41589118579988617677cf48af5401bc35b23e05
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36980
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Diffstat (limited to 'src/southbridge/intel/fsp_rangeley/spi.c')
-rw-r--r-- | src/southbridge/intel/fsp_rangeley/spi.c | 712 |
1 files changed, 0 insertions, 712 deletions
diff --git a/src/southbridge/intel/fsp_rangeley/spi.c b/src/southbridge/intel/fsp_rangeley/spi.c deleted file mode 100644 index f58677ba27..0000000000 --- a/src/southbridge/intel/fsp_rangeley/spi.c +++ /dev/null @@ -1,712 +0,0 @@ -/* - * Copyright (c) 2011 The Chromium OS Authors. - * Copyright (C) 2013, Intel Corporation. - * - * 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. - * - * This program is distributed in the hope that it will be useful, - * but without any warranty; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -/* This file is derived from the flashrom project. */ - -#include <stdint.h> -#include <stdlib.h> -#include <commonlib/helpers.h> -#include <delay.h> -#include <device/mmio.h> -#include <device/pci_ops.h> -#include <console/console.h> -#include <device/device.h> -#include <device/pci.h> -#include <device/pci_ids.h> - -#include <spi_flash.h> -#include <spi-generic.h> - -static int ich_status_poll(u16 bitmask, int wait_til_set); - -typedef struct spi_slave ich_spi_slave; - -static int ichspi_lock = 0; - -typedef struct ich7_spi_regs { - uint16_t spis; - uint16_t spic; - uint32_t spia; - uint64_t spid[8]; - uint64_t _pad; - uint32_t bbar; - uint16_t preop; - uint16_t optype; - uint8_t opmenu[8]; -} __packed ich7_spi_regs; - -typedef struct ich9_spi_regs { - uint32_t bfpr; // 0 - uint16_t hsfs; // 4 - uint16_t hsfc; // 6 - uint32_t faddr; // 8 - uint32_t _reserved0; // 0xC - uint32_t fdata[16]; // 0x10 - uint32_t frap; // 0x50 - uint32_t freg[5]; // 0x54 - uint32_t _reserved1[3]; // 0x67 - uint32_t pr[5]; // 0x74 - uint32_t _reserved2[2]; // 0x88 - uint8_t ssfs; // 0x90 - uint8_t ssfc[3]; // 0x91 - uint16_t preop; // 0x94 - uint16_t optype; // 0x96 - uint8_t opmenu[8]; // 0x98 - uint32_t bbar; // 0xB0 - uint8_t _reserved3[12]; - uint32_t fdoc; - uint32_t fdod; - uint8_t _reserved4[8]; - uint32_t afc; - uint32_t lvscc; - uint32_t uvscc; - uint8_t _reserved5[4]; - uint32_t fpb; - uint8_t _reserved6[28]; - uint32_t srdl; - uint32_t srdc; - uint32_t srd; -} __packed ich9_spi_regs; - -typedef struct ich10_spi_regs { - uint32_t bfpr; - uint16_t hsfs; - uint16_t hsfc; - uint32_t faddr; - uint32_t _reserved0; - uint32_t fdata[16]; - uint32_t fracc; - uint32_t freg[5]; - uint32_t _reserved1[3]; - uint32_t pr[5]; - uint32_t _reserved2[2]; - uint8_t ssfs; - uint8_t ssfc[3]; - uint16_t preop; - uint16_t optype; - uint8_t opmenu[8]; - uint8_t _reserved3[16]; - uint32_t fdoc; - uint32_t fdod; - uint8_t _reserved4[8]; - uint32_t afc; - uint32_t lvscc; - uint32_t uvscc; - uint8_t _reserved5[4]; - uint32_t fpb; - uint8_t _reserved6[36]; - uint32_t scs; - uint32_t bcr; - uint32_t tcgc; -} __packed ich10_spi_regs; - -typedef struct ich_spi_controller { - int locked; - - uint8_t *opmenu; - int menubytes; - uint16_t *preop; - uint16_t *optype; - uint32_t *addr; - uint8_t *data; - unsigned int databytes; - uint8_t *status; - uint16_t *control; - uint32_t *bbar; - uint8_t *bcr; -} ich_spi_controller; - -static ich_spi_controller cntlr; - -enum { - SPIS_SCIP = 0x0001, - SPIS_GRANT = 0x0002, - SPIS_CDS = 0x0004, - SPIS_FCERR = 0x0008, - SSFS_AEL = 0x0010, - SPIS_LOCK = 0x8000, - SPIS_RESERVED_MASK = 0x7ff0, - SSFS_RESERVED_MASK = 0x7fe2 -}; - -enum { - SPIC_SCGO = 0x000002, - SPIC_ACS = 0x000004, - SPIC_SPOP = 0x000008, - SPIC_DBC = 0x003f00, - SPIC_DS = 0x004000, - SPIC_SME = 0x008000, - SSFC_SCF_MASK = 0x070000, - SSFC_RESERVED = 0xf80000 -}; - -enum { - HSFS_FDONE = 0x0001, - HSFS_FCERR = 0x0002, - HSFS_AEL = 0x0004, - HSFS_BERASE_MASK = 0x0018, - HSFS_BERASE_SHIFT = 3, - HSFS_SCIP = 0x0020, - HSFS_FDOPSS = 0x2000, - HSFS_FDV = 0x4000, - HSFS_FLOCKDN = 0x8000 -}; - -enum { - HSFC_FGO = 0x0001, - HSFC_FCYCLE_MASK = 0x0006, - HSFC_FCYCLE_SHIFT = 1, - HSFC_FDBC_MASK = 0x3f00, - HSFC_FDBC_SHIFT = 8, - HSFC_FSMIE = 0x8000 -}; - -enum { - BCR_BIOSWE = 0x0001, - BCR_BLE = 0x0002, - BCR_SRC_MASK = 0x000c, - BCR_SRC_SHIFT = 0x0002, - BCR_SRC_NO_PREF = 0x0000, - BCR_SRC_NO_PREF_CACHE = 0x0004, - BCR_SRC_EN_PREF_CACHE = 0x0008, - BCR_TSS = 0x0010, - BCR_SMMBWP = 0x0020, - BCR_RESERVED_MASK = 0xffc0 -}; - -enum { - SPI_OPCODE_TYPE_READ_NO_ADDRESS = 0, - SPI_OPCODE_TYPE_WRITE_NO_ADDRESS = 1, - SPI_OPCODE_TYPE_READ_WITH_ADDRESS = 2, - SPI_OPCODE_TYPE_WRITE_WITH_ADDRESS = 3, -}; - -#if CONFIG(DEBUG_SPI_FLASH) - -static u8 readb_(const void *addr) -{ - u8 v = read8(addr); - printk(BIOS_DEBUG, "read %2.2x from %4.4x\n", - v, ((unsigned int) addr & 0xffff) - 0xf020); - return v; -} - -static u16 readw_(const void *addr) -{ - u16 v = read16(addr); - printk(BIOS_DEBUG, "read %4.4x from %4.4x\n", - v, ((unsigned int) addr & 0xffff) - 0xf020); - return v; -} - -static u32 readl_(const void *addr) -{ - u32 v = read32(addr); - printk(BIOS_DEBUG, "read %8.8x from %4.4x\n", - v, ((unsigned int) addr & 0xffff) - 0xf020); - return v; -} - -static void writeb_(u8 b, const void *addr) -{ - write8(addr, b); - printk(BIOS_DEBUG, "wrote %2.2x to %4.4x\n", - b, ((unsigned int) addr & 0xffff) - 0xf020); -} - -static void writew_(u16 b, const void *addr) -{ - write16(addr, b); - printk(BIOS_DEBUG, "wrote %4.4x to %4.4x\n", - b, ((unsigned int) addr & 0xffff) - 0xf020); -} - -static void writel_(u32 b, const void *addr) -{ - write32((unsigned long)addr, b); - printk(BIOS_DEBUG, "wrote %8.8x to %4.4x\n", - b, ((unsigned int) addr & 0xffff) - 0xf020); -} - -#else /* CONFIG_DEBUG_SPI_FLASH ^^^ enabled vvv NOT enabled */ - -#define readb_(a) read8(a) -#define readw_(a) read16(a) -#define readl_(a) read32(a) -#define writeb_(val, addr) write8(addr, val) -#define writew_(val, addr) write16(addr, val) -#define writel_(val, addr) write32(addr, val) - -#endif /* CONFIG_DEBUG_SPI_FLASH ^^^ NOT enabled */ - -static void write_reg(const void *value, void *dest, uint32_t size) -{ - const uint8_t *bvalue = value; - uint8_t *bdest = dest; - - while (size >= 4) { - writel_(*(const uint32_t *)bvalue, bdest); - bdest += 4; bvalue += 4; size -= 4; - } - while (size) { - writeb_(*bvalue, bdest); - bdest++; bvalue++; size--; - } -} - -static void read_reg(const void *src, void *value, uint32_t size) -{ - const uint8_t *bsrc = src; - uint8_t *bvalue = value; - - while (size >= 4) { - *(uint32_t *)bvalue = readl_(bsrc); - bsrc += 4; bvalue += 4; size -= 4; - } - while (size) { - *bvalue = readb_(bsrc); - bsrc++; bvalue++; size--; - } -} - -static void ich_set_bbar(uint32_t minaddr) -{ - const uint32_t bbar_mask = 0x00ffff00; - uint32_t ichspi_bbar; - - if (cntlr.bbar == NULL) - return; - - minaddr &= bbar_mask; - ichspi_bbar = readl_(cntlr.bbar) & ~bbar_mask; - ichspi_bbar |= minaddr; - writel_(ichspi_bbar, cntlr.bbar); -} - -/* - * Check if this device ID matches one of supported Intel SOC devices. - * - * Return the ICH version if there is a match, or zero otherwise. - */ -static inline int get_ich_version(uint16_t device_id) -{ - - if ((device_id >= PCI_DEVICE_ID_INTEL_RANGELEY_LPC_MIN && - device_id <= PCI_DEVICE_ID_INTEL_RANGELEY_LPC_MAX)) - return 10; - - return 0; -} - -#define MENU_BYTES member_size(struct ich10_spi_regs, opmenu) - -void spi_init(void) -{ - int ich_version = 0; - uint8_t bios_cntl; - uint32_t ids; - uint16_t vendor_id, device_id; - -#ifdef __SIMPLE_DEVICE__ - pci_devfn_t dev = PCI_DEV(0, 31, 0); -#else - struct device *dev = pcidev_on_root(31, 0); -#endif - ids = pci_read_config32(dev, 0); - vendor_id = ids; - device_id = (ids >> 16); - - if (vendor_id != PCI_VENDOR_ID_INTEL) { - printk(BIOS_DEBUG, "SPI: No SOC found.\n"); - return; - } - - ich_version = get_ich_version(device_id); - - if (!ich_version) { - printk(BIOS_DEBUG, "SPI: No known SOC found.\n"); - return; - } - - switch (ich_version) { - case 10: - { - uint8_t *spibase; /* SPI Base Address */ - uint32_t sbase; /* SPI Base Address Register */ - sbase = pci_read_config32(dev, 0x54); - /* Bits 31-9 are the base address, 8-4 are reserved, 3-0 are used. */ - spibase = (uint8_t *)(sbase & 0xffffff00); - ich10_spi_regs *ich10_spi = - (ich10_spi_regs *)(spibase); - ichspi_lock = readw_(&ich10_spi->hsfs) & HSFS_FLOCKDN; - cntlr.opmenu = ich10_spi->opmenu; - cntlr.menubytes = sizeof(ich10_spi->opmenu); - cntlr.optype = &ich10_spi->optype; - cntlr.addr = &ich10_spi->faddr; - cntlr.data = (uint8_t *)ich10_spi->fdata; - cntlr.databytes = sizeof(ich10_spi->fdata); - cntlr.status = &ich10_spi->ssfs; - cntlr.control = (uint16_t *)ich10_spi->ssfc; - cntlr.bbar = NULL; - cntlr.preop = &ich10_spi->preop; - cntlr.bcr = (uint8_t *)&ich10_spi->bcr; - break; - } - default: - printk(BIOS_DEBUG, "ICH SPI: Unrecognized ICH version %d.\n", ich_version); - } - - ich_set_bbar(0); - - /* Disable the BIOS write protect so write commands are allowed. */ - switch (ich_version) { - case 10: - { - /* Deassert SMM BIOS write protect(SMM BWP) and assert enable flash write(BIOSWE) */ - bios_cntl = readb_(cntlr.bcr); - bios_cntl &= ~BCR_SMMBWP; - bios_cntl |= BCR_BIOSWE; - writeb_(bios_cntl, cntlr.bcr); - break; - } - - default: - break; - } -} - -typedef struct spi_transaction { - const uint8_t *out; - uint32_t bytesout; - uint8_t *in; - uint32_t bytesin; - uint8_t type; - uint8_t opcode; - uint32_t offset; -} spi_transaction; - -static inline void spi_use_out(spi_transaction *trans, unsigned int bytes) -{ - trans->out += bytes; - trans->bytesout -= bytes; -} - -static inline void spi_use_in(spi_transaction *trans, unsigned int bytes) -{ - trans->in += bytes; - trans->bytesin -= bytes; -} - -static void spi_setup_type(spi_transaction *trans) -{ - trans->type = 0xFF; - - /* Try to guess spi type from read/write sizes. */ - if (trans->bytesin == 0) { - if (trans->bytesout > 4) - /* - * If bytesin = 0 and bytesout > 4, we presume this is - * a write data operation, which is accompanied by an - * address. - */ - trans->type = SPI_OPCODE_TYPE_WRITE_WITH_ADDRESS; - else - trans->type = SPI_OPCODE_TYPE_WRITE_NO_ADDRESS; - return; - } - - if (trans->bytesout == 1) { /* and bytesin is > 0 */ - trans->type = SPI_OPCODE_TYPE_READ_NO_ADDRESS; - return; - } - - if (trans->bytesout == 4) { /* and bytesin is > 0 */ - trans->type = SPI_OPCODE_TYPE_READ_WITH_ADDRESS; - } - - /* Fast read command is called with 5 bytes instead of 4 */ - if (trans->out[0] == SPI_OPCODE_FAST_READ && trans->bytesout == 5) { - trans->type = SPI_OPCODE_TYPE_READ_WITH_ADDRESS; - --trans->bytesout; - } -} - -static int spi_setup_opcode(spi_transaction *trans) -{ - uint16_t optypes; - uint8_t opmenu[MENU_BYTES]; - - trans->opcode = trans->out[0]; - spi_use_out(trans, 1); - if (!ichspi_lock) { - /* The lock is off, so just use index 0. */ - writeb_(trans->opcode, cntlr.opmenu); - optypes = readw_(cntlr.optype); - optypes = (optypes & 0xfffc) | (trans->type & 0x3); - writew_(optypes, cntlr.optype); - return 0; - } else { - /* The lock is on. See if what we need is on the menu. */ - uint8_t optype; - uint16_t opcode_index; - - /* Write Enable is handled as atomic prefix */ - if (trans->opcode == SPI_OPCODE_WREN) - return 0; - - read_reg(cntlr.opmenu, opmenu, sizeof(opmenu)); - for (opcode_index = 0; opcode_index < ARRAY_SIZE(opmenu); opcode_index++) { - if (opmenu[opcode_index] == trans->opcode) - break; - } - - if (opcode_index == ARRAY_SIZE(opmenu)) { - printk(BIOS_DEBUG, "ICH SPI: Opcode %x not found\n", - trans->opcode); - return -1; - } - - optypes = readw_(cntlr.optype); - optype = (optypes >> (opcode_index * 2)) & 0x3; - if (trans->type == SPI_OPCODE_TYPE_WRITE_NO_ADDRESS && - optype == SPI_OPCODE_TYPE_WRITE_WITH_ADDRESS && - trans->bytesout >= 3) { - /* We guessed wrong earlier. Fix it up. */ - trans->type = optype; - } - if (optype != trans->type) { - printk(BIOS_DEBUG, "ICH SPI: Transaction doesn't fit type %d\n", - optype); - return -1; - } - return opcode_index; - } -} - -static int spi_setup_offset(spi_transaction *trans) -{ - /* Separate the SPI address and data. */ - switch (trans->type) { - case SPI_OPCODE_TYPE_READ_NO_ADDRESS: - case SPI_OPCODE_TYPE_WRITE_NO_ADDRESS: - return 0; - case SPI_OPCODE_TYPE_READ_WITH_ADDRESS: - case SPI_OPCODE_TYPE_WRITE_WITH_ADDRESS: - trans->offset = ((uint32_t)trans->out[0] << 16) | - ((uint32_t)trans->out[1] << 8) | - ((uint32_t)trans->out[2] << 0); - spi_use_out(trans, 3); - return 1; - default: - printk(BIOS_DEBUG, "Unrecognized SPI transaction type %#x\n", trans->type); - return -1; - } -} - -/* - * Wait for up to 60ms til status register bit(s) turn 1 (in case wait_til_set - * below is True) or 0. In case the wait was for the bit(s) to set - write - * those bits back, which would cause resetting them. - * - * Return the last read status value on success or -1 on failure. - */ -static int ich_status_poll(u16 bitmask, int wait_til_set) -{ - int timeout = 60000; /* This will result in 600 ms */ - u16 status = 0; - - while (timeout--) { - status = readw_(cntlr.status); - if (wait_til_set ^ ((status & bitmask) == 0)) { - if (wait_til_set) - writew_((status & bitmask), cntlr.status); - return status; - } - udelay(10); - } - - printk(BIOS_DEBUG, "ICH SPI: SCIP timeout, read %x, expected %x\n", - status, bitmask); - return -1; -} - -static int spi_ctrlr_xfer(const struct spi_slave *slave, const void *dout, - size_t bytesout, void *din, size_t bytesin) -{ - uint16_t control; - int16_t opcode_index; - int with_address; - int status; - - spi_transaction trans = { - dout, bytesout, - din, bytesin, - 0xff, 0xff, 0 - }; - - /* There has to always at least be an opcode. */ - if (!bytesout || !dout) { - printk(BIOS_DEBUG, "ICH SPI: No opcode for transfer\n"); - return -1; - } - /* Make sure if we read something we have a place to put it. */ - if (bytesin != 0 && !din) { - printk(BIOS_DEBUG, "ICH SPI: Read but no target buffer\n"); - return -1; - } - - if (ich_status_poll(SPIS_SCIP, 0) == -1) - return -1; - - writew_(SPIS_CDS | SPIS_FCERR, cntlr.status); - - spi_setup_type(&trans); - if ((opcode_index = spi_setup_opcode(&trans)) < 0) - return -1; - if ((with_address = spi_setup_offset(&trans)) < 0) - return -1; - - if (!ichspi_lock && trans.opcode == SPI_OPCODE_WREN) { - /* - * Treat Write Enable as Atomic Pre-Op if possible - * in order to prevent the Management Engine from - * issuing a transaction between WREN and DATA. - */ - writew_(trans.opcode, cntlr.preop); - return 0; - } - - /* Preset control fields */ - control = SPIC_SCGO | ((opcode_index & 0x07) << 4); - - /* Issue atomic preop cycle if needed */ - if (readw_(cntlr.preop)) - control |= SPIC_ACS; - - if (!trans.bytesout && !trans.bytesin) { - /* SPI addresses are 24 bit only */ - if (with_address) - writel_(trans.offset & 0x00FFFFFF, cntlr.addr); - - /* - * This is a 'no data' command (like Write Enable), its - * bitesout size was 1, decremented to zero while executing - * spi_setup_opcode() above. Tell the chip to send the - * command. - */ - writew_(control, cntlr.control); - - /* wait for the result */ - status = ich_status_poll(SPIS_CDS | SPIS_FCERR, 1); - if (status == -1) - return -1; - - if (status & SPIS_FCERR) { - printk(BIOS_DEBUG, "ICH SPI: Command transaction error\n"); - return -1; - } - - goto spi_xfer_exit; - } - - /* - * Check if this is a write command attempting to transfer more bytes - * than the controller can handle. Iterations for writes are not - * supported here because each SPI write command needs to be preceded - * and followed by other SPI commands, and this sequence is controlled - * by the SPI chip driver. - */ - if (trans.bytesout > cntlr.databytes) { - printk(BIOS_DEBUG, "ICH SPI: Too much to write. Does your SPI chip driver use" - " spi_crop_chunk()?\n"); - return -1; - } - - /* - * Read or write up to databytes bytes at a time until everything has - * been sent. - */ - while (trans.bytesout || trans.bytesin) { - uint32_t data_length; - - /* SPI addresses are 24 bit only */ - writel_(trans.offset & 0x00FFFFFF, cntlr.addr); - - if (trans.bytesout) - data_length = min(trans.bytesout, cntlr.databytes); - else - data_length = min(trans.bytesin, cntlr.databytes); - - /* Program data into FDATA0 to N */ - if (trans.bytesout) { - write_reg(trans.out, cntlr.data, data_length); - spi_use_out(&trans, data_length); - if (with_address) - trans.offset += data_length; - } - - /* Add proper control fields' values */ - control &= ~((cntlr.databytes - 1) << 8); - control |= SPIC_DS; - control |= (data_length - 1) << 8; - - /* write it */ - writew_(control, cntlr.control); - - /* Wait for Cycle Done Status or Flash Cycle Error. */ - status = ich_status_poll(SPIS_CDS | SPIS_FCERR, 1); - if (status == -1) - return -1; - - if (status & SPIS_FCERR) { - printk(BIOS_DEBUG, "ICH SPI: Data transaction error\n"); - return -1; - } - - if (trans.bytesin) { - read_reg(cntlr.data, trans.in, data_length); - spi_use_in(&trans, data_length); - if (with_address) - trans.offset += data_length; - } - } - -spi_xfer_exit: - /* Clear atomic preop now that xfer is done */ - writew_(0, cntlr.preop); - - return 0; -} - -static int xfer_vectors(const struct spi_slave *slave, - struct spi_op vectors[], size_t count) -{ - return spi_flash_vector_helper(slave, vectors, count, spi_ctrlr_xfer); -} - -static const struct spi_ctrlr spi_ctrlr = { - .xfer_vector = xfer_vectors, - .max_xfer_size = member_size(ich10_spi_regs, fdata), -}; - -const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = { - { - .ctrlr = &spi_ctrlr, - .bus_start = 0, - .bus_end = 0, - }, -}; - -const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map); |