The signing part is build into mkimage regardless of this
option.
+- bootcount support:
+ CONFIG_BOOTCOUNT_LIMIT
+
+ This enables the bootcounter support, see:
+ http://www.denx.de/wiki/DULG/UBootBootCountLimit
+
+ CONFIG_AT91SAM9XE
+ enable special bootcounter support on at91sam9xe based boards.
+ CONFIG_BLACKFIN
+ enable special bootcounter support on blackfin based boards.
+ CONFIG_SOC_DA8XX
+ enable special bootcounter support on da850 based boards.
+ CONFIG_BOOTCOUNT_RAM
+ enable support for the bootcounter in RAM
+ CONFIG_BOOTCOUNT_I2C
+ enable support for the bootcounter on an i2c (like RTC) device.
+ CONFIG_SYS_I2C_RTC_ADDR = i2c chip address
+ CONFIG_SYS_BOOTCOUNT_ADDR = i2c addr which is used for
+ the bootcounter.
+ CONFIG_BOOTCOUNT_ALEN = address len
- Show boot progress:
CONFIG_SHOW_BOOT_PROGRESS
+++ /dev/null
-/*
- * Copyright (C) 2014 Synopsys, Inc. All rights reserved.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-/*
- * This file is only required to allow compilation of "designware_i2c" driver.
- * Which explicitly includes <asm/arch/hardware.h>.
- */
exynos5250-snow.dtb \
exynos5250-smdk5250.dtb \
exynos5420-smdk5420.dtb
-
dtb-$(CONFIG_TEGRA) += tegra20-harmony.dtb \
tegra20-medcom-wide.dtb \
tegra20-paz00.dtb \
tegra30-beaver.dtb \
tegra30-cardhu.dtb \
tegra30-tec-ng.dtb \
- tegra114-dalmore.dtb
-
+ tegra114-dalmore.dtb \
+ tegra124-venice2.dtb
dtb-$(CONFIG_ZYNQ) += zynq-zc702.dtb \
zynq-zc706.dtb \
zynq-zed.dtb \
#define CONFIG_SYS_NAND_ALE (1 << 17)
#if defined(CONFIG_SPEAR600)
-#define CONFIG_SYS_I2C_BASE 0xD0200000
#define CONFIG_SYS_FSMC_BASE 0xD1800000
#define CONFIG_FSMC_NAND_BASE 0xD2000000
#define CONFIG_SPEAR_MPMCREGS 100
#elif defined(CONFIG_SPEAR300)
-#define CONFIG_SYS_I2C_BASE 0xD0180000
#define CONFIG_SYS_FSMC_BASE 0x94000000
#elif defined(CONFIG_SPEAR310)
-#define CONFIG_SYS_I2C_BASE 0xD0180000
#define CONFIG_SYS_FSMC_BASE 0x44000000
#undef CONFIG_SYS_NAND_CLE
#define CONFIG_SYS_MACB3_BASE 0xB1800000
#elif defined(CONFIG_SPEAR320)
-#define CONFIG_SYS_I2C_BASE 0xD0180000
#define CONFIG_SYS_FSMC_BASE 0x4C000000
#define CONFIG_SPEAR_EMIBASE 0x40000000
# include <linux/types.h>
-extern u_long get_vco(void);
-extern u_long get_cclk(void);
-extern u_long get_sclk(void);
-extern u_long get_sclk0(void);
-extern u_long get_sclk1(void);
-extern u_long get_dclk(void);
-
# define bfin_revid() (bfin_read_CHIPID() >> 28)
extern int bfin_os_log_check(void);
return uclk;
}
+extern u_long get_vco(void);
+extern u_long get_cclk(void);
+extern u_long get_sclk(void);
+
#ifdef CGU_DIV
+extern u_long get_sclk0(void);
+extern u_long get_sclk1(void);
+extern u_long get_dclk(void);
# define get_uart_clk get_sclk0
+# define get_i2c_clk get_sclk0
+# define get_spi_clk get_sclk0
#else
# define get_uart_clk get_sclk
+# define get_i2c_clk get_sclk
+# define get_spi_clk get_sclk
#endif
#endif
--- /dev/null
+/*
+ * i2c.c - driver for Blackfin on-chip TWI/I2C
+ *
+ * Copyright (c) 2006-2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __ARCH_TWI_H
+#define __ARCH_TWI_H
+
+#include <asm/blackfin.h>
+#include <asm/mach-common/bits/twi.h>
+
+#endif
#include <asm/cplb.h>
#include <asm/mach-common/bits/mpu.h>
+#include <asm/clock.h>
#include <kgdb.h>
#ifdef CONFIG_CMD_NAND
#include <config.h>
#include <malloc.h>
#include <asm/blackfin.h>
+#include <asm/clock.h>
#include <asm/gpio.h>
#include <asm/portmux.h>
#include <asm/mach-common/bits/dma.h>
#include <command.h>
#include <asm/blackfin.h>
+#include <asm/clock.h>
#include <asm/mach-common/bits/otp.h>
static const char *otp_strerror(uint32_t err)
#include <command.h>
#include <config.h>
#include <asm/byteorder.h>
+#include <asm/clock.h>
#include <asm/io.h>
#include <asm/errno.h>
#include <asm/portmux.h>
obj-$(CONFIG_BOOTCOUNT_AM33XX) += bootcount_davinci.o
obj-$(CONFIG_BOOTCOUNT_RAM) += bootcount_ram.o
obj-$(CONFIG_BOOTCOUNT_ENV) += bootcount_env.o
+obj-$(CONFIG_BOOTCOUNT_I2C) += bootcount_i2c.o
--- /dev/null
+/*
+ * (C) Copyright 2013
+ * Heiko Schocher, DENX Software Engineering, hs@denx.de.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <bootcount.h>
+#include <linux/compiler.h>
+#include <i2c.h>
+
+#define BC_MAGIC 0xbc
+
+void bootcount_store(ulong a)
+{
+ unsigned char buf[3];
+ int ret;
+
+ buf[0] = BC_MAGIC;
+ buf[1] = (a & 0xff);
+ ret = i2c_write(CONFIG_SYS_I2C_RTC_ADDR, CONFIG_SYS_BOOTCOUNT_ADDR,
+ CONFIG_BOOTCOUNT_ALEN, buf, 2);
+ if (ret != 0)
+ puts("Error writing bootcount\n");
+}
+
+ulong bootcount_load(void)
+{
+ unsigned char buf[3];
+ int ret;
+
+ ret = i2c_read(CONFIG_SYS_I2C_RTC_ADDR, CONFIG_SYS_BOOTCOUNT_ADDR,
+ CONFIG_BOOTCOUNT_ALEN, buf, 2);
+ if (ret != 0) {
+ puts("Error loading bootcount\n");
+ return 0;
+ }
+ if (buf[0] == BC_MAGIC)
+ return buf[1];
+
+ bootcount_store(0);
+
+ return 0;
+}
op == DFU_OP_READ ? "load" : "write",
dfu->data.mmc.dev, dfu->data.mmc.part,
(unsigned int) buf, dfu->name);
- if (op == DFU_OP_WRITE)
- sprintf(cmd_buf + strlen(cmd_buf), " %lx", *len);
break;
case DFU_FS_EXT4:
sprintf(cmd_buf, "ext4%s mmc %d:%d 0x%x /%s",
op == DFU_OP_READ ? "load" : "write",
dfu->data.mmc.dev, dfu->data.mmc.part,
(unsigned int) buf, dfu->name);
- if (op == DFU_OP_WRITE)
- sprintf(cmd_buf + strlen(cmd_buf), " %ld", *len);
break;
default:
printf("%s: Layout (%s) not (yet) supported!\n", __func__,
return -1;
}
+ if (op == DFU_OP_WRITE)
+ sprintf(cmd_buf + strlen(cmd_buf), " %lx", *len);
+
debug("%s: %s 0x%p\n", __func__, cmd_buf, cmd_buf);
ret = run_command(cmd_buf, 0);
--- /dev/null
+/*
+ * i2c.c - driver for ADI TWI/I2C
+ *
+ * Copyright (c) 2006-2013 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <common.h>
+#include <i2c.h>
+
+#include <asm/clock.h>
+#include <asm/twi.h>
+#include <asm/io.h>
+
+/* Every register is 32bit aligned, but only 16bits in size */
+#define ureg(name) u16 name; u16 __pad_##name;
+struct twi_regs {
+ ureg(clkdiv);
+ ureg(control);
+ ureg(slave_ctl);
+ ureg(slave_stat);
+ ureg(slave_addr);
+ ureg(master_ctl);
+ ureg(master_stat);
+ ureg(master_addr);
+ ureg(int_stat);
+ ureg(int_mask);
+ ureg(fifo_ctl);
+ ureg(fifo_stat);
+ char __pad[0x50];
+ ureg(xmt_data8);
+ ureg(xmt_data16);
+ ureg(rcv_data8);
+ ureg(rcv_data16);
+};
+#undef ureg
+
+/* U-Boot I2C framework allows only one active device at a time. */
+#ifdef TWI_CLKDIV
+#define TWI0_CLKDIV TWI_CLKDIV
+#endif
+static struct twi_regs *twi = (void *)TWI0_CLKDIV;
+
+#ifdef DEBUG
+# define dmemset(s, c, n) memset(s, c, n)
+#else
+# define dmemset(s, c, n)
+#endif
+#define debugi(fmt, args...) \
+ debug( \
+ "MSTAT:0x%03x FSTAT:0x%x ISTAT:0x%02x\t%-20s:%-3i: " fmt "\n", \
+ twi->master_stat, twi->fifo_stat, twi->int_stat, \
+ __func__, __LINE__, ## args)
+
+#ifdef CONFIG_TWICLK_KHZ
+# error do not define CONFIG_TWICLK_KHZ ... use CONFIG_SYS_I2C_SPEED
+#endif
+
+/*
+ * The way speed is changed into duty often results in integer truncation
+ * with 50% duty, so we'll force rounding up to the next duty by adding 1
+ * to the max. In practice this will get us a speed of something like
+ * 385 KHz. The other limit is easy to handle as it is only 8 bits.
+ */
+#define I2C_SPEED_MAX 400000
+#define I2C_SPEED_TO_DUTY(speed) (5000000 / (speed))
+#define I2C_DUTY_MAX (I2C_SPEED_TO_DUTY(I2C_SPEED_MAX) + 1)
+#define I2C_DUTY_MIN 0xff /* 8 bit limited */
+#define SYS_I2C_DUTY I2C_SPEED_TO_DUTY(CONFIG_SYS_I2C_SPEED)
+/* Note: duty is inverse of speed, so the comparisons below are correct */
+#if SYS_I2C_DUTY < I2C_DUTY_MAX || SYS_I2C_DUTY > I2C_DUTY_MIN
+# error "The Blackfin I2C hardware can only operate 20KHz - 400KHz"
+#endif
+
+/* All transfers are described by this data structure */
+struct i2c_msg {
+ u8 flags;
+#define I2C_M_COMBO 0x4
+#define I2C_M_STOP 0x2
+#define I2C_M_READ 0x1
+ int len; /* msg length */
+ u8 *buf; /* pointer to msg data */
+ int alen; /* addr length */
+ u8 *abuf; /* addr buffer */
+};
+
+/* Allow msec timeout per ~byte transfer */
+#define I2C_TIMEOUT 10
+
+/**
+ * wait_for_completion - manage the actual i2c transfer
+ * @msg: the i2c msg
+ */
+static int wait_for_completion(struct i2c_msg *msg)
+{
+ u16 int_stat, ctl;
+ ulong timebase = get_timer(0);
+
+ do {
+ int_stat = readw(&twi->int_stat);
+
+ if (int_stat & XMTSERV) {
+ debugi("processing XMTSERV");
+ writew(XMTSERV, &twi->int_stat);
+ if (msg->alen) {
+ writew(*(msg->abuf++), &twi->xmt_data8);
+ --msg->alen;
+ } else if (!(msg->flags & I2C_M_COMBO) && msg->len) {
+ writew(*(msg->buf++), &twi->xmt_data8);
+ --msg->len;
+ } else {
+ ctl = readw(&twi->master_ctl);
+ if (msg->flags & I2C_M_COMBO)
+ writew(ctl | RSTART | MDIR,
+ &twi->master_ctl);
+ else
+ writew(ctl | STOP, &twi->master_ctl);
+ }
+ }
+ if (int_stat & RCVSERV) {
+ debugi("processing RCVSERV");
+ writew(RCVSERV, &twi->int_stat);
+ if (msg->len) {
+ *(msg->buf++) = readw(&twi->rcv_data8);
+ --msg->len;
+ } else if (msg->flags & I2C_M_STOP) {
+ ctl = readw(&twi->master_ctl);
+ writew(ctl | STOP, &twi->master_ctl);
+ }
+ }
+ if (int_stat & MERR) {
+ debugi("processing MERR");
+ writew(MERR, &twi->int_stat);
+ return msg->len;
+ }
+ if (int_stat & MCOMP) {
+ debugi("processing MCOMP");
+ writew(MCOMP, &twi->int_stat);
+ if (msg->flags & I2C_M_COMBO && msg->len) {
+ ctl = readw(&twi->master_ctl);
+ ctl = (ctl & ~RSTART) |
+ (min(msg->len, 0xff) << 6) | MEN | MDIR;
+ writew(ctl, &twi->master_ctl);
+ } else
+ break;
+ }
+
+ /* If we were able to do something, reset timeout */
+ if (int_stat)
+ timebase = get_timer(0);
+
+ } while (get_timer(timebase) < I2C_TIMEOUT);
+
+ return msg->len;
+}
+
+/**
+ * i2c_transfer - setup an i2c transfer
+ * @return: 0 if things worked, non-0 if things failed
+ *
+ * Here we just get the i2c stuff all prepped and ready, and then tail off
+ * into wait_for_completion() for all the bits to go.
+ */
+static int i2c_transfer(uchar chip, uint addr, int alen, uchar *buffer,
+ int len, u8 flags)
+{
+ int ret;
+ u16 ctl;
+ uchar addr_buffer[] = {
+ (addr >> 0),
+ (addr >> 8),
+ (addr >> 16),
+ };
+ struct i2c_msg msg = {
+ .flags = flags | (len >= 0xff ? I2C_M_STOP : 0),
+ .buf = buffer,
+ .len = len,
+ .abuf = addr_buffer,
+ .alen = alen,
+ };
+
+ dmemset(buffer, 0xff, len);
+ debugi("chip=0x%x addr=0x%02x alen=%i buf[0]=0x%02x len=%i ",
+ chip, addr, alen, buffer[0], len);
+ debugi("flags=0x%02x[%s] ", flags,
+ (flags & I2C_M_READ ? "rd" : "wr"));
+
+ /* wait for things to settle */
+ while (readw(&twi->master_stat) & BUSBUSY)
+ if (ctrlc())
+ return 1;
+
+ /* Set Transmit device address */
+ writew(chip, &twi->master_addr);
+
+ /* Clear the FIFO before starting things */
+ writew(XMTFLUSH | RCVFLUSH, &twi->fifo_ctl);
+ writew(0, &twi->fifo_ctl);
+
+ /* prime the pump */
+ if (msg.alen) {
+ len = (msg.flags & I2C_M_COMBO) ? msg.alen : msg.alen + len;
+ debugi("first byte=0x%02x", *msg.abuf);
+ writew(*(msg.abuf++), &twi->xmt_data8);
+ --msg.alen;
+ } else if (!(msg.flags & I2C_M_READ) && msg.len) {
+ debugi("first byte=0x%02x", *msg.buf);
+ writew(*(msg.buf++), &twi->xmt_data8);
+ --msg.len;
+ }
+
+ /* clear int stat */
+ writew(-1, &twi->master_stat);
+ writew(-1, &twi->int_stat);
+ writew(0, &twi->int_mask);
+
+ /* Master enable */
+ ctl = readw(&twi->master_ctl);
+ ctl = (ctl & FAST) | (min(len, 0xff) << 6) | MEN |
+ ((msg.flags & I2C_M_READ) ? MDIR : 0);
+ writew(ctl, &twi->master_ctl);
+
+ /* process the rest */
+ ret = wait_for_completion(&msg);
+ debugi("ret=%d", ret);
+
+ if (ret) {
+ ctl = readw(&twi->master_ctl) & ~MEN;
+ writew(ctl, &twi->master_ctl);
+ ctl = readw(&twi->control) & ~TWI_ENA;
+ writew(ctl, &twi->control);
+ ctl = readw(&twi->control) | TWI_ENA;
+ writew(ctl, &twi->control);
+ }
+
+ return ret;
+}
+
+/**
+ * i2c_set_bus_speed - set i2c bus speed
+ * @speed: bus speed (in HZ)
+ */
+int i2c_set_bus_speed(unsigned int speed)
+{
+ u16 clkdiv = I2C_SPEED_TO_DUTY(speed);
+
+ /* Set TWI interface clock */
+ if (clkdiv < I2C_DUTY_MAX || clkdiv > I2C_DUTY_MIN)
+ return -1;
+ clkdiv = (clkdiv << 8) | (clkdiv & 0xff);
+ writew(clkdiv, &twi->clkdiv);
+
+ /* Don't turn it on */
+ writew(speed > 100000 ? FAST : 0, &twi->master_ctl);
+
+ return 0;
+}
+
+/**
+ * i2c_get_bus_speed - get i2c bus speed
+ * @speed: bus speed (in HZ)
+ */
+unsigned int i2c_get_bus_speed(void)
+{
+ u16 clkdiv = readw(&twi->clkdiv) & 0xff;
+ /* 10 MHz / (2 * CLKDIV) -> 5 MHz / CLKDIV */
+ return 5000000 / clkdiv;
+}
+
+/**
+ * i2c_init - initialize the i2c bus
+ * @speed: bus speed (in HZ)
+ * @slaveaddr: address of device in slave mode (0 - not slave)
+ *
+ * Slave mode isn't actually implemented. It'll stay that way until
+ * we get a real request for it.
+ */
+void i2c_init(int speed, int slaveaddr)
+{
+ u16 prescale = ((get_i2c_clk() / 1000 / 1000 + 5) / 10) & 0x7F;
+
+ /* Set TWI internal clock as 10MHz */
+ writew(prescale, &twi->control);
+
+ /* Set TWI interface clock as specified */
+ i2c_set_bus_speed(speed);
+
+ /* Enable it */
+ writew(TWI_ENA | prescale, &twi->control);
+
+ debugi("CONTROL:0x%04x CLKDIV:0x%04x", readw(&twi->control),
+ readw(&twi->clkdiv));
+
+#if CONFIG_SYS_I2C_SLAVE
+# error I2C slave support not tested/supported
+#endif
+}
+
+/**
+ * i2c_probe - test if a chip exists at a given i2c address
+ * @chip: i2c chip addr to search for
+ * @return: 0 if found, non-0 if not found
+ */
+int i2c_probe(uchar chip)
+{
+ u8 byte;
+ return i2c_read(chip, 0, 0, &byte, 1);
+}
+
+/**
+ * i2c_read - read data from an i2c device
+ * @chip: i2c chip addr
+ * @addr: memory (register) address in the chip
+ * @alen: byte size of address
+ * @buffer: buffer to store data read from chip
+ * @len: how many bytes to read
+ * @return: 0 on success, non-0 on failure
+ */
+int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
+{
+ return i2c_transfer(chip, addr, alen, buffer,
+ len, (alen ? I2C_M_COMBO : I2C_M_READ));
+}
+
+/**
+ * i2c_write - write data to an i2c device
+ * @chip: i2c chip addr
+ * @addr: memory (register) address in the chip
+ * @alen: byte size of address
+ * @buffer: buffer holding data to write to chip
+ * @len: how many bytes to write
+ * @return: 0 on success, non-0 on failure
+ */
+int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
+{
+ return i2c_transfer(chip, addr, alen, buffer, len, 0);
+}
+
+/**
+ * i2c_set_bus_num - change active I2C bus
+ * @bus: bus index, zero based
+ * @returns: 0 on success, non-0 on failure
+ */
+int i2c_set_bus_num(unsigned int bus)
+{
+ switch (bus) {
+#if CONFIG_SYS_MAX_I2C_BUS > 0
+ case 0:
+ twi = (void *)TWI0_CLKDIV;
+ return 0;
+#endif
+#if CONFIG_SYS_MAX_I2C_BUS > 1
+ case 1:
+ twi = (void *)TWI1_CLKDIV;
+ return 0;
+#endif
+#if CONFIG_SYS_MAX_I2C_BUS > 2
+ case 2:
+ twi = (void *)TWI2_CLKDIV;
+ return 0;
+#endif
+ default: return -1;
+ }
+}
+
+/**
+ * i2c_get_bus_num - returns index of active I2C bus
+ */
+unsigned int i2c_get_bus_num(void)
+{
+ switch ((unsigned long)twi) {
+#if CONFIG_SYS_MAX_I2C_BUS > 0
+ case TWI0_CLKDIV:
+ return 0;
+#endif
+#if CONFIG_SYS_MAX_I2C_BUS > 1
+ case TWI1_CLKDIV:
+ return 1;
+#endif
+#if CONFIG_SYS_MAX_I2C_BUS > 2
+ case TWI2_CLKDIV:
+ return 2;
+#endif
+ default: return -1;
+ }
+}
#include <i2c.h>
#include <asm/blackfin.h>
+#include <asm/clock.h>
#include <asm/mach-common/bits/twi.h>
/* Every register is 32bit aligned, but only 16bits in size */
*/
void i2c_init(int speed, int slaveaddr)
{
- uint8_t prescale = ((get_sclk() / 1024 / 1024 + 5) / 10) & 0x7F;
+ uint8_t prescale = ((get_i2c_clk() / 1000 / 1000 + 5) / 10) & 0x7F;
/* Set TWI internal clock as 10MHz */
twi->control = prescale;
#include <common.h>
#include <asm/io.h>
-#include <asm/arch/hardware.h>
#include "designware_i2c.h"
#ifdef CONFIG_I2C_MULTI_BUS
return 0;
}
-/* check parameters for i2c_read and i2c_write */
-static int check_params(uint addr, int alen, uchar *buffer, int len)
-{
- if (buffer == NULL) {
- printf("Buffer is invalid\n");
- return 1;
- }
-
- if (alen > 1) {
- printf("addr len %d not supported\n", alen);
- return 1;
- }
-
- if (addr + len > 256) {
- printf("address out of range\n");
- return 1;
- }
-
- return 0;
-}
-
-static int i2c_xfer_init(uchar chip, uint addr)
+static int i2c_xfer_init(uchar chip, uint addr, int alen)
{
if (i2c_wait_for_bb())
return 1;
i2c_setaddress(chip);
- writel(addr, &i2c_regs_p->ic_cmd_data);
-
+ while (alen) {
+ alen--;
+ /* high byte address going out first */
+ writel((addr >> (alen * 8)) & 0xff,
+ &i2c_regs_p->ic_cmd_data);
+ }
return 0;
}
addr);
#endif
- if (check_params(addr, alen, buffer, len))
- return 1;
-
- if (i2c_xfer_init(chip, addr))
+ if (i2c_xfer_init(chip, addr, alen))
return 1;
start_time_rx = get_timer(0);
addr);
#endif
- if (check_params(addr, alen, buffer, len))
- return 1;
-
- if (i2c_xfer_init(chip, addr))
+ if (i2c_xfer_init(chip, addr, alen))
return 1;
start_time_tx = get_timer(0);
writel(I2C_QUEUECTRL_QUEUE_RUN, &i2c_regs->hw_i2c_queuectrl_set);
}
-static void mxs_i2c_write(uchar chip, uint addr, int alen,
+static int mxs_i2c_write(uchar chip, uint addr, int alen,
uchar *buf, int blen, int stop)
{
struct mxs_i2c_regs *i2c_regs = (struct mxs_i2c_regs *)MXS_I2C0_BASE;
- uint32_t data;
+ uint32_t data, tmp;
int i, remain, off;
+ int timeout = MXS_I2C_MAX_TIMEOUT;
if ((alen > 4) || (alen == 0)) {
debug("MXS I2C: Invalid address length\n");
- return;
+ return -EINVAL;
}
if (stop)
writel(data >> remain, &i2c_regs->hw_i2c_data);
writel(I2C_QUEUECTRL_QUEUE_RUN, &i2c_regs->hw_i2c_queuectrl_set);
+
+ while (--timeout) {
+ tmp = readl(&i2c_regs->hw_i2c_queuestat);
+ if (tmp & I2C_QUEUESTAT_WR_QUEUE_EMPTY)
+ break;
+ }
+
+ if (!timeout) {
+ debug("MXS I2C: Failed transmitting data!\n");
+ return -EINVAL;
+ }
+
+ return 0;
}
static int mxs_i2c_wait_for_ack(void)
int ret;
int i;
- mxs_i2c_write(chip, addr, alen, NULL, 0, 0);
+ ret = mxs_i2c_write(chip, addr, alen, NULL, 0, 0);
+ if (ret) {
+ debug("MXS I2C: Failed writing address\n");
+ return ret;
+ }
+
ret = mxs_i2c_wait_for_ack();
if (ret) {
debug("MXS I2C: Failed writing address\n");
int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
{
int ret;
- mxs_i2c_write(chip, addr, alen, buffer, len, 1);
+ ret = mxs_i2c_write(chip, addr, alen, buffer, len, 1);
+ if (ret) {
+ debug("MXS I2C: Failed writing address\n");
+ return ret;
+ }
+
ret = mxs_i2c_wait_for_ack();
if (ret)
debug("MXS I2C: Failed writing address\n");
int i2c_probe(uchar chip)
{
int ret;
- mxs_i2c_write(chip, 0, 1, NULL, 0, 1);
- ret = mxs_i2c_wait_for_ack();
+ ret = mxs_i2c_write(chip, 0, 1, NULL, 0, 1);
+ if (!ret)
+ ret = mxs_i2c_wait_for_ack();
mxs_i2c_reset();
return ret;
}
* - Status functions now read irqstatus_raw as per TRM guidelines
* (except for OMAP243X and OMAP34XX).
* - Driver now supports up to I2C5 (OMAP5).
+ *
+ * Copyright (c) 2014 Hannes Petermaier <oe5hpm@oevsv.at>, B&R
+ * - Added support for set_speed
+ *
*/
#include <common.h>
static struct i2c *omap24_get_base(struct i2c_adapter *adap);
static u16 wait_for_event(struct i2c_adapter *adap);
static void flush_fifo(struct i2c_adapter *adap);
-
-static void omap24_i2c_init(struct i2c_adapter *adap, int speed, int slaveadd)
+static int omap24_i2c_findpsc(u32 *pscl, u32 *psch, uint speed)
{
- struct i2c *i2c_base = omap24_get_base(adap);
- int psc, fsscll, fssclh;
- int hsscll = 0, hssclh = 0;
- u32 scll, sclh;
- int timeout = I2C_TIMEOUT;
+ unsigned int sampleclk, prescaler;
+ int fsscll, fssclh;
- /* Only handle standard, fast and high speeds */
- if ((speed != OMAP_I2C_STANDARD) &&
- (speed != OMAP_I2C_FAST_MODE) &&
- (speed != OMAP_I2C_HIGH_SPEED)) {
- printf("Error : I2C unsupported speed %d\n", speed);
- return;
- }
+ speed <<= 1;
+ prescaler = 0;
+ /*
+ * some divisors may cause a precission loss, but shouldn't
+ * be a big thing, because i2c_clk is then allready very slow.
+ */
+ while (prescaler <= 0xFF) {
+ sampleclk = I2C_IP_CLK / (prescaler+1);
- psc = I2C_IP_CLK / I2C_INTERNAL_SAMPLING_CLK;
- psc -= 1;
- if (psc < I2C_PSC_MIN) {
- printf("Error : I2C unsupported prescalar %d\n", psc);
- return;
+ fsscll = sampleclk / speed;
+ fssclh = fsscll;
+ fsscll -= I2C_FASTSPEED_SCLL_TRIM;
+ fssclh -= I2C_FASTSPEED_SCLH_TRIM;
+
+ if (((fsscll > 0) && (fssclh > 0)) &&
+ ((fsscll <= (255-I2C_FASTSPEED_SCLL_TRIM)) &&
+ (fssclh <= (255-I2C_FASTSPEED_SCLH_TRIM)))) {
+ if (pscl)
+ *pscl = fsscll;
+ if (psch)
+ *psch = fssclh;
+
+ return prescaler;
+ }
+ prescaler++;
}
+ return -1;
+}
+static uint omap24_i2c_setspeed(struct i2c_adapter *adap, uint speed)
+{
+ struct i2c *i2c_base = omap24_get_base(adap);
+ int psc, fsscll = 0, fssclh = 0;
+ int hsscll = 0, hssclh = 0;
+ u32 scll = 0, sclh = 0;
- if (speed == OMAP_I2C_HIGH_SPEED) {
+ if (speed >= OMAP_I2C_HIGH_SPEED) {
/* High speed */
+ psc = I2C_IP_CLK / I2C_INTERNAL_SAMPLING_CLK;
+ psc -= 1;
+ if (psc < I2C_PSC_MIN) {
+ printf("Error : I2C unsupported prescaler %d\n", psc);
+ return -1;
+ }
/* For first phase of HS mode */
- fsscll = fssclh = I2C_INTERNAL_SAMPLING_CLK /
- (2 * OMAP_I2C_FAST_MODE);
+ fsscll = I2C_INTERNAL_SAMPLING_CLK / (2 * speed);
+
+ fssclh = fsscll;
fsscll -= I2C_HIGHSPEED_PHASE_ONE_SCLL_TRIM;
fssclh -= I2C_HIGHSPEED_PHASE_ONE_SCLH_TRIM;
if (((fsscll < 0) || (fssclh < 0)) ||
((fsscll > 255) || (fssclh > 255))) {
puts("Error : I2C initializing first phase clock\n");
- return;
+ return -1;
}
/* For second phase of HS mode */
if (((fsscll < 0) || (fssclh < 0)) ||
((fsscll > 255) || (fssclh > 255))) {
puts("Error : I2C initializing second phase clock\n");
- return;
+ return -1;
}
scll = (unsigned int)hsscll << 8 | (unsigned int)fsscll;
} else {
/* Standard and fast speed */
- fsscll = fssclh = I2C_INTERNAL_SAMPLING_CLK / (2 * speed);
-
- fsscll -= I2C_FASTSPEED_SCLL_TRIM;
- fssclh -= I2C_FASTSPEED_SCLH_TRIM;
- if (((fsscll < 0) || (fssclh < 0)) ||
- ((fsscll > 255) || (fssclh > 255))) {
+ psc = omap24_i2c_findpsc(&scll, &sclh, speed);
+ if (0 > psc) {
puts("Error : I2C initializing clock\n");
- return;
+ return -1;
}
-
- scll = (unsigned int)fsscll;
- sclh = (unsigned int)fssclh;
}
+ adap->speed = speed;
+ adap->waitdelay = (10000000 / speed) * 2; /* wait for 20 clkperiods */
+ writew(0, &i2c_base->con);
+ writew(psc, &i2c_base->psc);
+ writew(scll, &i2c_base->scll);
+ writew(sclh, &i2c_base->sclh);
+ writew(I2C_CON_EN, &i2c_base->con);
+ writew(0xFFFF, &i2c_base->stat); /* clear all pending status */
+
+ return 0;
+}
+static void omap24_i2c_init(struct i2c_adapter *adap, int speed, int slaveadd)
+{
+ struct i2c *i2c_base = omap24_get_base(adap);
+ int timeout = I2C_TIMEOUT;
+
if (readw(&i2c_base->con) & I2C_CON_EN) {
writew(0, &i2c_base->con);
udelay(50000);
udelay(1000);
}
- writew(0, &i2c_base->con);
- writew(psc, &i2c_base->psc);
- writew(scll, &i2c_base->scll);
- writew(sclh, &i2c_base->sclh);
+ if (0 != omap24_i2c_setspeed(adap, speed)) {
+ printf("ERROR: failed to setup I2C bus-speed!\n");
+ return;
+ }
/* own address */
writew(slaveadd, &i2c_base->oa);
- writew(I2C_CON_EN, &i2c_base->con);
+
#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX)
/*
* Have to enable interrupts for OMAP2/3, these IPs don't have
struct i2c *i2c_base = omap24_get_base(adap);
u16 stat;
- /* note: if you try and read data when its not there or ready
+ /*
+ * note: if you try and read data when its not there or ready
* you get a bus error
*/
while (1) {
/* Check for ACK (!NAK) */
if (!(status & I2C_STAT_NACK)) {
- res = 0; /* Device found */
- udelay(I2C_WAIT); /* Required by AM335X in SPL */
+ res = 0; /* Device found */
+ udelay(adap->waitdelay);/* Required by AM335X in SPL */
/* Abort transfer (force idle state) */
writew(I2C_CON_MST | I2C_CON_TRX, &i2c_base->con); /* Reset */
udelay(1000);
adap->hwadapnr, status);
goto rd_exit;
}
- if (status == 0 || status & I2C_STAT_NACK) {
+ if (status == 0 || (status & I2C_STAT_NACK)) {
i2c_error = 1;
printf("i2c_read: error waiting for addr ACK (status=0x%x)\n",
status);
adap->hwadapnr, status);
goto rd_exit;
}
- if (status == 0 || status & I2C_STAT_NACK) {
+ if (status == 0 || (status & I2C_STAT_NACK)) {
i2c_error = 1;
goto rd_exit;
}
int i;
u16 status;
int i2c_error = 0;
+ int timeout = I2C_TIMEOUT;
if (alen < 0) {
puts("I2C write: addr len < 0\n");
adap->hwadapnr, status);
goto wr_exit;
}
- if (status == 0 || status & I2C_STAT_NACK) {
+ if (status == 0 || (status & I2C_STAT_NACK)) {
i2c_error = 1;
printf("i2c_write: error waiting for addr ACK (status=0x%x)\n",
status);
/* Address phase is over, now write data */
for (i = 0; i < len; i++) {
status = wait_for_event(adap);
- if (status == 0 || status & I2C_STAT_NACK) {
+ if (status == 0 || (status & I2C_STAT_NACK)) {
i2c_error = 1;
printf("i2c_write: error waiting for data ACK (status=0x%x)\n",
status);
goto wr_exit;
}
}
+ /*
+ * poll ARDY bit for making sure that last byte really has been
+ * transferred on the bus.
+ */
+ do {
+ status = wait_for_event(adap);
+ } while (!(status & I2C_STAT_ARDY) && timeout--);
+ if (timeout <= 0)
+ printf("i2c_write: timed out writig last byte!\n");
wr_exit:
flush_fifo(adap);
I2C_STAT_BB) && timeout--) {
#endif
writew(stat, &i2c_base->stat);
- udelay(I2C_WAIT);
+ udelay(adap->waitdelay);
}
if (timeout <= 0) {
int timeout = I2C_TIMEOUT;
do {
- udelay(I2C_WAIT);
+ udelay(adap->waitdelay);
#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX)
status = readw(&i2c_base->stat);
#else
#endif
U_BOOT_I2C_ADAP_COMPLETE(omap24_0, omap24_i2c_init, omap24_i2c_probe,
- omap24_i2c_read, omap24_i2c_write, NULL,
+ omap24_i2c_read, omap24_i2c_write, omap24_i2c_setspeed,
CONFIG_SYS_OMAP24_I2C_SPEED,
CONFIG_SYS_OMAP24_I2C_SLAVE,
0)
U_BOOT_I2C_ADAP_COMPLETE(omap24_1, omap24_i2c_init, omap24_i2c_probe,
- omap24_i2c_read, omap24_i2c_write, NULL,
+ omap24_i2c_read, omap24_i2c_write, omap24_i2c_setspeed,
CONFIG_SYS_OMAP24_I2C_SPEED1,
CONFIG_SYS_OMAP24_I2C_SLAVE1,
1)
#define ZYNQ_I2C_FIFO_DEPTH 16
#define ZYNQ_I2C_TRANSFERT_SIZE_MAX 255 /* Controller transfer limit */
-#if defined(CONFIG_ZYNQ_I2C0)
-# define ZYNQ_I2C_BASE ZYNQ_I2C_BASEADDR0
-#else
-# define ZYNQ_I2C_BASE ZYNQ_I2C_BASEADDR1
-#endif
-
-static struct zynq_i2c_registers *zynq_i2c =
- (struct zynq_i2c_registers *)ZYNQ_I2C_BASE;
+static struct zynq_i2c_registers *i2c_select(struct i2c_adapter *adap)
+{
+ return adap->hwadapnr ?
+ /* Zynq PS I2C1 */
+ (struct zynq_i2c_registers *)ZYNQ_I2C_BASEADDR1 :
+ /* Zynq PS I2C0 */
+ (struct zynq_i2c_registers *)ZYNQ_I2C_BASEADDR0;
+}
/* I2C init called by cmd_i2c when doing 'i2c reset'. */
static void zynq_i2c_init(struct i2c_adapter *adap, int requested_speed,
int slaveadd)
{
+ struct zynq_i2c_registers *zynq_i2c = i2c_select(adap);
+
/* 111MHz / ( (3 * 17) * 22 ) = ~100KHz */
writel((16 << ZYNQ_I2C_CONTROL_DIV_B_SHIFT) |
(2 << ZYNQ_I2C_CONTROL_DIV_A_SHIFT), &zynq_i2c->control);
}
#ifdef DEBUG
-static void zynq_i2c_debug_status(void)
+static void zynq_i2c_debug_status(struct zynq_i2c_registers *zynq_i2c)
{
int int_status;
int status;
#endif
/* Wait for an interrupt */
-static u32 zynq_i2c_wait(u32 mask)
+static u32 zynq_i2c_wait(struct zynq_i2c_registers *zynq_i2c, u32 mask)
{
int timeout, int_status;
break;
}
#ifdef DEBUG
- zynq_i2c_debug_status();
+ zynq_i2c_debug_status(zynq_i2c));
#endif
/* Clear interrupt status flags */
writel(int_status & mask, &zynq_i2c->interrupt_status);
*/
static int zynq_i2c_probe(struct i2c_adapter *adap, u8 dev)
{
+ struct zynq_i2c_registers *zynq_i2c = i2c_select(adap);
+
/* Attempt to read a byte */
setbits_le32(&zynq_i2c->control, ZYNQ_I2C_CONTROL_CLR_FIFO |
ZYNQ_I2C_CONTROL_RW);
writel(dev, &zynq_i2c->address);
writel(1, &zynq_i2c->transfer_size);
- return (zynq_i2c_wait(ZYNQ_I2C_INTERRUPT_COMP |
+ return (zynq_i2c_wait(zynq_i2c, ZYNQ_I2C_INTERRUPT_COMP |
ZYNQ_I2C_INTERRUPT_NACK) &
ZYNQ_I2C_INTERRUPT_COMP) ? 0 : -ETIMEDOUT;
}
u32 status;
u32 i = 0;
u8 *cur_data = data;
+ struct zynq_i2c_registers *zynq_i2c = i2c_select(adap);
/* Check the hardware can handle the requested bytes */
if ((length < 0) || (length > ZYNQ_I2C_TRANSFERT_SIZE_MAX))
* Temporarily disable restart (by clearing hold)
* It doesn't seem to work.
*/
- clrbits_le32(&zynq_i2c->control, ZYNQ_I2C_CONTROL_RW |
- ZYNQ_I2C_CONTROL_HOLD);
+ clrbits_le32(&zynq_i2c->control, ZYNQ_I2C_CONTROL_HOLD);
writel(0xFF, &zynq_i2c->interrupt_status);
- while (alen--)
- writel(addr >> (8*alen), &zynq_i2c->data);
- writel(dev, &zynq_i2c->address);
+ if (alen) {
+ clrbits_le32(&zynq_i2c->control, ZYNQ_I2C_CONTROL_RW);
+ writel(dev, &zynq_i2c->address);
+ while (alen--)
+ writel(addr >> (8 * alen), &zynq_i2c->data);
- /* Wait for the address to be sent */
- if (!zynq_i2c_wait(ZYNQ_I2C_INTERRUPT_COMP)) {
- /* Release the bus */
- clrbits_le32(&zynq_i2c->control, ZYNQ_I2C_CONTROL_HOLD);
- return -ETIMEDOUT;
+ /* Wait for the address to be sent */
+ if (!zynq_i2c_wait(zynq_i2c, ZYNQ_I2C_INTERRUPT_COMP)) {
+ /* Release the bus */
+ clrbits_le32(&zynq_i2c->control, ZYNQ_I2C_CONTROL_HOLD);
+ return -ETIMEDOUT;
+ }
+ debug("Device acked address\n");
}
- debug("Device acked address\n");
setbits_le32(&zynq_i2c->control, ZYNQ_I2C_CONTROL_CLR_FIFO |
ZYNQ_I2C_CONTROL_RW);
/* Wait for data */
do {
- status = zynq_i2c_wait(ZYNQ_I2C_INTERRUPT_COMP |
+ status = zynq_i2c_wait(zynq_i2c, ZYNQ_I2C_INTERRUPT_COMP |
ZYNQ_I2C_INTERRUPT_DATA);
if (!status) {
/* Release the bus */
int alen, u8 *data, int length)
{
u8 *cur_data = data;
+ struct zynq_i2c_registers *zynq_i2c = i2c_select(adap);
/* Write the register address */
setbits_le32(&zynq_i2c->control, ZYNQ_I2C_CONTROL_CLR_FIFO |
ZYNQ_I2C_CONTROL_HOLD);
clrbits_le32(&zynq_i2c->control, ZYNQ_I2C_CONTROL_RW);
writel(0xFF, &zynq_i2c->interrupt_status);
- while (alen--)
- writel(addr >> (8*alen), &zynq_i2c->data);
- /* Start the tranfer */
writel(dev, &zynq_i2c->address);
- if (!zynq_i2c_wait(ZYNQ_I2C_INTERRUPT_COMP)) {
- /* Release the bus */
- clrbits_le32(&zynq_i2c->control, ZYNQ_I2C_CONTROL_HOLD);
- return -ETIMEDOUT;
+ if (alen) {
+ while (alen--)
+ writel(addr >> (8 * alen), &zynq_i2c->data);
+ /* Start the tranfer */
+ if (!zynq_i2c_wait(zynq_i2c, ZYNQ_I2C_INTERRUPT_COMP)) {
+ /* Release the bus */
+ clrbits_le32(&zynq_i2c->control, ZYNQ_I2C_CONTROL_HOLD);
+ return -ETIMEDOUT;
+ }
+ debug("Device acked address\n");
}
- debug("Device acked address\n");
while (length--) {
writel(*(cur_data++), &zynq_i2c->data);
if (readl(&zynq_i2c->transfer_size) == ZYNQ_I2C_FIFO_DEPTH) {
- if (!zynq_i2c_wait(ZYNQ_I2C_INTERRUPT_COMP)) {
+ if (!zynq_i2c_wait(zynq_i2c, ZYNQ_I2C_INTERRUPT_COMP)) {
/* Release the bus */
clrbits_le32(&zynq_i2c->control,
ZYNQ_I2C_CONTROL_HOLD);
/* All done... release the bus */
clrbits_le32(&zynq_i2c->control, ZYNQ_I2C_CONTROL_HOLD);
/* Wait for the address and data to be sent */
- if (!zynq_i2c_wait(ZYNQ_I2C_INTERRUPT_COMP))
+ if (!zynq_i2c_wait(zynq_i2c, ZYNQ_I2C_INTERRUPT_COMP))
return -ETIMEDOUT;
return 0;
}
zynq_i2c_write, zynq_i2c_set_bus_speed,
CONFIG_SYS_I2C_ZYNQ_SPEED, CONFIG_SYS_I2C_ZYNQ_SLAVE,
0)
+U_BOOT_I2C_ADAP_COMPLETE(zynq_1, zynq_i2c_init, zynq_i2c_probe, zynq_i2c_read,
+ zynq_i2c_write, zynq_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_ZYNQ_SPEED, CONFIG_SYS_I2C_ZYNQ_SLAVE,
+ 1)
#include <asm/errno.h>
#include <asm/byteorder.h>
#include <asm/blackfin.h>
+#include <asm/clock.h>
#include <asm/portmux.h>
#include <asm/mach-common/bits/sdh.h>
#include <asm/mach-common/bits/dma.h>
#include <linux/mii.h>
#include <asm/blackfin.h>
+#include <asm/clock.h>
#include <asm/portmux.h>
#include <asm/mach-common/bits/dma.h>
#include <asm/mach-common/bits/emac.h>
#include <spi.h>
#include <asm/blackfin.h>
+#include <asm/clock.h>
#include <asm/gpio.h>
#include <asm/portmux.h>
#include <asm/mach-common/bits/spi.h>
void spi_set_speed(struct spi_slave *slave, uint hz)
{
struct bfin_spi_slave *bss = to_bfin_spi_slave(slave);
- ulong sclk;
+ ulong clk;
u32 baud;
- sclk = get_sclk();
+ clk = get_spi_clk();
/* baud should be rounded up */
- baud = DIV_ROUND_UP(sclk, 2 * hz);
+ baud = DIV_ROUND_UP(clk, 2 * hz);
if (baud < 2)
baud = 2;
else if (baud > (u16)-1)
#include <spi.h>
#include <asm/blackfin.h>
+#include <asm/clock.h>
#include <asm/gpio.h>
#include <asm/portmux.h>
#include <asm/mach-common/bits/spi6xx.h>
void spi_set_speed(struct spi_slave *slave, uint hz)
{
struct bfin_spi_slave *bss = to_bfin_spi_slave(slave);
- ulong sclk;
+ ulong clk;
u32 clock;
- sclk = get_sclk1();
- clock = sclk / hz;
+ clk = get_spi_clk();
+ clock = clk / hz;
if (clock)
clock--;
bss->clock = clock;
#include <usb.h>
#include <asm/blackfin.h>
+#include <asm/clock.h>
#include <asm/mach-common/bits/usb.h>
#include "musb_core.h"
/* I2C driver configuration */
#define CONFIG_HARD_I2C
#define CONFIG_DW_I2C
+#if defined(CONFIG_SPEAR600)
+#define CONFIG_SYS_I2C_BASE 0xD0200000
+#elif defined(CONFIG_SPEAR300)
+#define CONFIG_SYS_I2C_BASE 0xD0180000
+#elif defined(CONFIG_SPEAR310)
+#define CONFIG_SYS_I2C_BASE 0xD0180000
+#elif defined(CONFIG_SPEAR320)
+#define CONFIG_SYS_I2C_BASE 0xD0180000
+#endif
#define CONFIG_SYS_I2C_SPEED 400000
#define CONFIG_SYS_I2C_SLAVE 0x02
/* I2C config options */
#define CONFIG_HARD_I2C
#define CONFIG_DW_I2C
+#define CONFIG_SYS_I2C_BASE 0xD0200000
#define CONFIG_SYS_I2C_SPEED 400000
#define CONFIG_SYS_I2C_SLAVE 0x02
#define CONFIG_I2C_CHIPADDRESS 0x50
# define CONFIG_DOS_PARTITION
#endif
+#define CONFIG_SYS_I2C_ZYNQ
/* I2C */
-#if defined(CONFIG_ZYNQ_I2C0) || defined(CONFIG_ZYNQ_I2C1)
+#if defined(CONFIG_SYS_I2C_ZYNQ)
# define CONFIG_CMD_I2C
# define CONFIG_SYS_I2C
-# define CONFIG_SYS_I2C_ZYNQ
# define CONFIG_SYS_I2C_ZYNQ_SPEED 100000
-# define CONFIG_SYS_I2C_ZYNQ_SLAVE 1
+# define CONFIG_SYS_I2C_ZYNQ_SLAVE 0
#endif
/* EEPROM */
uint (*set_bus_speed)(struct i2c_adapter *adap,
uint speed);
int speed;
+ int waitdelay;
int slaveaddr;
int init_done;
int hwadapnr;
projects / karo-tx-uboot.git / commitdiff