diff options
Diffstat (limited to 'src/drivers/i2c/tpm/cr50.c')
| -rw-r--r-- | src/drivers/i2c/tpm/cr50.c | 32 |
1 files changed, 13 insertions, 19 deletions
diff --git a/src/drivers/i2c/tpm/cr50.c b/src/drivers/i2c/tpm/cr50.c index f9a286241e..f386dacb0b 100644 --- a/src/drivers/i2c/tpm/cr50.c +++ b/src/drivers/i2c/tpm/cr50.c @@ -27,7 +27,6 @@ * instead of just reading header and determining the remainder */ -#include <arch/early_variables.h> #include <commonlib/endian.h> #include <string.h> #include <types.h> @@ -55,15 +54,15 @@ struct tpm_inf_dev { uint8_t buf[CR50_MAX_BUFSIZE + sizeof(uint8_t)]; }; -static struct tpm_inf_dev g_tpm_dev CAR_GLOBAL; +static struct tpm_inf_dev g_tpm_dev; __weak int tis_plat_irq_status(void) { - static int warning_displayed CAR_GLOBAL; + static int warning_displayed; - if (!car_get_var(warning_displayed)) { + if (!warning_displayed) { printk(BIOS_WARNING, "WARNING: tis_plat_irq_status() not implemented, wasting 20ms to wait on Cr50!\n"); - car_set_var(warning_displayed, 1); + warning_displayed = 1; } mdelay(CR50_TIMEOUT_NOIRQ_MS); @@ -102,16 +101,14 @@ static int cr50_i2c_wait_tpm_ready(struct tpm_chip *chip) static int cr50_i2c_read(struct tpm_chip *chip, uint8_t addr, uint8_t *buffer, size_t len) { - struct tpm_inf_dev *tpm_dev = car_get_var_ptr(&g_tpm_dev); - - if (tpm_dev->addr == 0) + if (g_tpm_dev.addr == 0) return -1; /* Clear interrupt before starting transaction */ tis_plat_irq_status(); /* Send the register address byte to the TPM */ - if (i2c_write_raw(tpm_dev->bus, tpm_dev->addr, &addr, 1)) { + if (i2c_write_raw(g_tpm_dev.bus, g_tpm_dev.addr, &addr, 1)) { printk(BIOS_ERR, "%s: Address write failed\n", __func__); return -1; } @@ -121,7 +118,7 @@ static int cr50_i2c_read(struct tpm_chip *chip, uint8_t addr, return -1; /* Read response data from the TPM */ - if (i2c_read_raw(tpm_dev->bus, tpm_dev->addr, buffer, len)) { + if (i2c_read_raw(g_tpm_dev.bus, g_tpm_dev.addr, buffer, len)) { printk(BIOS_ERR, "%s: Read response failed\n", __func__); return -1; } @@ -146,22 +143,20 @@ static int cr50_i2c_read(struct tpm_chip *chip, uint8_t addr, static int cr50_i2c_write(struct tpm_chip *chip, uint8_t addr, uint8_t *buffer, size_t len) { - struct tpm_inf_dev *tpm_dev = car_get_var_ptr(&g_tpm_dev); - - if (tpm_dev->addr == 0) + if (g_tpm_dev.addr == 0) return -1; if (len > CR50_MAX_BUFSIZE) return -1; /* Prepend the 'register address' to the buffer */ - tpm_dev->buf[0] = addr; - memcpy(tpm_dev->buf + 1, buffer, len); + g_tpm_dev.buf[0] = addr; + memcpy(g_tpm_dev.buf + 1, buffer, len); /* Clear interrupt before starting transaction */ tis_plat_irq_status(); /* Send write request buffer with address */ - if (i2c_write_raw(tpm_dev->bus, tpm_dev->addr, tpm_dev->buf, len + 1)) { + if (i2c_write_raw(g_tpm_dev.bus, g_tpm_dev.addr, g_tpm_dev.buf, len + 1)) { printk(BIOS_ERR, "%s: Error writing to TPM\n", __func__); return -1; } @@ -492,7 +487,6 @@ static int cr50_i2c_probe(struct tpm_chip *chip, uint32_t *did_vid) int tpm_vendor_init(struct tpm_chip *chip, unsigned int bus, uint32_t dev_addr) { - struct tpm_inf_dev *tpm_dev = car_get_var_ptr(&g_tpm_dev); uint32_t did_vid = 0; if (dev_addr == 0) { @@ -500,8 +494,8 @@ int tpm_vendor_init(struct tpm_chip *chip, unsigned int bus, uint32_t dev_addr) return -1; } - tpm_dev->bus = bus; - tpm_dev->addr = dev_addr; + g_tpm_dev.bus = bus; + g_tpm_dev.addr = dev_addr; cr50_vendor_init(chip); |