Merge branch 'master' of git://git.denx.de/u-boot-arm

* 'master' of git://git.denx.de/u-boot-arm: (212 commits)
  ARM: cache: Move the cp15 CR register read before flushing the cache.
  ARM: introduce arch_early_init_r()
  PXA: Enable CONFIG_PREBOOT on zipitz2
  ARM: mx28: Remove CONFIG_ARCH_CPU_INIT
  No need to define CONFIG_ARCH_CPU_INIT.
  add new board vl_ma2sc
  MTD: SPEAr SMI: Add write support for length < 4 bytes
  i2c: designware_i2c.c: Add support for the "i2c probe" command
  rtc/m41t62: Add support for M41T82 with HT (Halt Update)
  SPL: ARM: spear: Add SPL support for SPEAr600 platform
  Makefile: Add u-boot.spr build target (SPEAr)
  SPL: ARM: spear: Remove some objects from SPL build
  SPL: lib/Makefile: Add crc32.c to SPL build
  SPL: common/Makefile: Add image.c to SPL build
  arm: Don't use printf() in SPL builds
  GPIO: Add SPEAr GPIO driver
  net: Multiple updates/enhancements to designware.c
  cleanup/SPEAr: Define configuration flags more elegantly
  cleanup/SPEAr: Remove unnecessary parenthesis
  SPEAr: Correct SoC ID offset in misc configuration space
  SPEAr: explicitly select clk src for UART
  SPEAr: Remove CONFIG_MTD_NAND_VERIFY_WRITE to speed up NAND access
  SPEAr: Enable ONFI nand flash detection for spear3xx and 6xx and evb
  SPEAr: Enable CONFIG_SYS_FLASH_EMPTY_INFO macro
  SPEAr: Correct the definition of CONFIG_SYS_MONITOR_BASE
  SPEAr: Enable CONFIG_SYS_FLASH_PROTECTION
  SPEAr: Enable dcache for fast file transfer
  SPEAr: Enable autoneg for ethernet
  SPEAr: Enable udc and usb-console support only for usbtty configuration
  SPEAr: Enable usb device high speed support
  SPEAr: Initialize SNOR in early_board_init_f
  SPEAr: Change the default environment variables
  SPEAr: Remove unused flag (CONFIG_SYS_HZ_CLOCK)
  SPEAr: Add configuration options for spear3xx and spear6xx boards
  SPEAr: Add basic arch related support for SPEAr SoCs
  SPEAr: Add interface information in initialization
  SPEAr: Add macb driver support for spear310 and spear320
  SPEAr: Configure network support for spear SoCs
  SPEAr: Place ethaddr write and read within CONFIG_CMD_NET
  SPEAr: Eliminate dependency on Xloader table
  SPEAr: Fix ARM relocation support
  st_smi: Fixed page size for Winbond W25Q128FV flash
  st_smi: Change timeout loop implementation
  st_smi: Fix bug in flash_print_info()
  st_smi: Change the flash probing method
  st_smi: Removed no needed dependency on ST_M25Pxx_ID
  st_smi: Fix smi read status
  st_smi: Move status register read before modifying ctrl register
  st_smi: Read status until timeout happens
  st_smi: Enhance the error handling
  st_smi: Change SMI timeout values
  st_smi: Return error in case TFF is not set
  st_smi: Add support for SPEAr SMI driver
  mtd/NAND: Remove obsolete SPEAr specific NAND drivers
  SPEAr: Configure FSMC driver for NAND interface
  mtd/NAND: Add FSMC driver support
  arm/km: remove calls to kw_gpio_* in board_early_init_f
  arm/km: add implementation for read_dip_switch
  arm/km: support the 2 PCIe fpga resets
  arm/km: skip FPGA config when already configured
  arm/km: redefine piggy 4 reg names to avoid conflicts
  arm/km: cleanup km_kirkwood boards
  arm/km: enable BOCO2 FPGA download support
  arm/km: remove portl2.h and use km_kirkwood instead
  arm/km: convert mgcoge3un target to km_kirkwood
  arm/km: add kmcoge5un board support
  arm/km: add kmnusa board support
  arm: bugfix: save_boot_params_default accesses uninitalized stack when -O0
  cm-t35: fix incorrect NAND_ECC layout selection
  ARM: OMAP4/5: Do not configure non essential pads, clocks, dplls.
  ARM: OMAP4/5: Move USB pads to essential list.
  ARM: OMAP4/5: Move USB clocks to essential group.
  ARM: OMAP4/5: Move gpmc clocks to essential group.
  ARM: OMAP4+: Move external phy initialisations to arch specific place.
  omap4: Use a smaller M,N couple for IVA DPLL
  da850/omap-l138: Enable auto negotiation in RMII mode
  omap: am33xx: accomodate input clocks other than 24 Mhz
  omap: emif: fix bug in manufacturer code test
  omap: emif: deal with rams that return duplicate mr data on all byte lanes
  OMAP4+: Force DDR in self-refresh after warm reset
  OMAP4+: Handle sdram init after warm reset
  ARM: OMAP3+: Detect reset type
  arm: bugfix: Move vector table before jumping relocated code
  Kirkwood: Add support for Ka-Ro TK71
  arm/km: use spi claim bus to switch between SPI and NAND
  arm/kirkwood: protect the ENV_SPI #defines
  ARM: don't probe PHY address for LaCie boards
  lacie_kw: fix CONFIG_SYS_KWD_CONFIG for inetspace_v2
  lacie_kw: fix SDRAM banks number for net2big_v2
  Kirkwood: add lschlv2 and lsxhl board support
  net: add helper to generate random mac address
  net: use common rand()/srand() functions
  lib: add rand() function
  kwboot: boot kirkwood SoCs over a serial link
  kw_spi: add weak functions board_spi_claim/release_bus
  kw_spi: support spi_claim/release_bus functions
  kw_spi: backup and reset the MPP of the chosen CS pin
  kirkwood: fix calls to kirkwood_mpp_conf
  kirkwood: add save functionality kirkwood_mpp_conf function
  km_arm: use filesize for erase in update command
  arm/km: enable mii cmd
  arm/km: remove CONFIG_RESET_PHY_R
  arm/km: change maintainer for mgcoge3un
  arm/km: fix wrong comment in SDRAM config for mgcoge3un
  arm/km: use ARRAY_SIZE macro
  arm/km: rename CONFIG option CONFIG_KM_DEF_ENV_UPDATE
  arm/km: add piggy mac adress offset for mgcoge3un
  arm/km: add board type to boards.cfg
  AT91SAM9*: Change kernel address in dataflash to match u-boot's size
  ATMEL/PIO: Enable new feature of PIO on Atmel device
  ehci-atmel: fix compiler warning
  AT91: at91sam9m10g45ek : Enable EHCI instead OHCI
  Atmel : usb : add EHCI driver for Atmel SoC
  Fix: AT91SAM9263 nor flash usage
  Fix: broken boot message at serial line on AT91SAM9263-EK board
  i.MX6 USDHC: Use the ESDHC clock
  mx28evk: Fix boot by adjusting HW_DRAM_CTL29 register
  i.MX28: Add function to adjust memory parameters
  mx28evk: Fix PSWITCH key position
  mx53smd: Remove CONFIG_SYS_I2C_SLAVE definition
  mx53loco: Remove CONFIG_SYS_I2C_SLAVE definition
  mx53evk: Remove CONFIG_SYS_I2C_SLAVE definition
  mx53ard: Remove CONFIG_SYS_I2C_SLAVE definition
  mx35pdk: Remove CONFIG_SYS_I2C_SLAVE definition
  imx31_phycore: Remove CONFIG_SYS_I2C_SLAVE definition
  mx53ard: Remove unused CONFIG_MII_GASKET
  mx6: Avoid writing to read-only bits in imximage.cfg
  m28evk: use same notation to alloc the 128kB stack
  ...

Signed-off-by: Wolfgang Denk <wd@denx.de>

1 files changed, 256 insertions, 0 deletions

diff --git a/board/keymile/km_arm/fpga_config.c b/board/keymile/km_arm/fpga_config.c
new file mode 100644
index 000000000..fcc5fe6c6
--- /dev/null
+++ b/board/keymile/km_arm/fpga_config.c
@@ -0,0 +1,256 @@
+/*
+ * (C) Copyright 2012
+ * Valentin Lontgchamp, Keymile AG, valentin.longchamp@keymile.com
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <asm/errno.h>
+
+/* GPIO Pin from kirkwood connected to PROGRAM_B pin of the xilinx FPGA */
+#define KM_XLX_PROGRAM_B_PIN    39
+
+#define BOCO_ADDR	0x10
+
+#define ID_REG		0x00
+#define BOCO2_ID	0x5b
+
+static int check_boco2(void)
+{
+	int ret;
+	u8 id;
+
+	ret = i2c_read(BOCO_ADDR, ID_REG, 1, &id, 1);
+	if (ret) {
+		printf("%s: error reading the BOCO id !!\n", __func__);
+		return ret;
+	}
+
+	return (id == BOCO2_ID);
+}
+
+static int boco_clear_bits(u8 reg, u8 flags)
+{
+	int ret;
+	u8 regval;
+
+	/* give access to the EEPROM from FPGA */
+	ret = i2c_read(BOCO_ADDR, reg, 1, &regval, 1);
+	if (ret) {
+		printf("%s: error reading the BOCO @%#x !!\n",
+			__func__, reg);
+		return ret;
+	}
+	regval &= ~flags;
+	ret = i2c_write(BOCO_ADDR, reg, 1, &regval, 1);
+	if (ret) {
+		printf("%s: error writing the BOCO @%#x !!\n",
+			__func__, reg);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int boco_set_bits(u8 reg, u8 flags)
+{
+	int ret;
+	u8 regval;
+
+	/* give access to the EEPROM from FPGA */
+	ret = i2c_read(BOCO_ADDR, reg, 1, &regval, 1);
+	if (ret) {
+		printf("%s: error reading the BOCO @%#x !!\n",
+			__func__, reg);
+		return ret;
+	}
+	regval |= flags;
+	ret = i2c_write(BOCO_ADDR, reg, 1, &regval, 1);
+	if (ret) {
+		printf("%s: error writing the BOCO @%#x !!\n",
+			__func__, reg);
+		return ret;
+	}
+
+	return 0;
+}
+
+#define SPI_REG		0x06
+#define CFG_EEPROM	0x02
+#define FPGA_PROG	0x04
+#define FPGA_INIT_B	0x10
+#define FPGA_DONE	0x20
+
+static int fpga_done(void)
+{
+	int ret = 0;
+	u8 regval;
+
+	/* this is only supported with the boco2 design */
+	if (!check_boco2())
+		return 0;
+
+	ret = i2c_read(BOCO_ADDR, SPI_REG, 1, &regval, 1);
+	if (ret) {
+		printf("%s: error reading the BOCO @%#x !!\n",
+			__func__, SPI_REG);
+		return 0;
+	}
+
+	return regval & FPGA_DONE ? 1 : 0;
+}
+
+int skip;
+
+int trigger_fpga_config(void)
+{
+	int ret = 0;
+
+	/* if the FPGA is already configured, we do not want to
+	 * reconfigure it */
+	skip = 0;
+	if (fpga_done()) {
+		printf("PCIe FPGA config: skipped\n");
+		skip = 1;
+		return 0;
+	}
+
+	if (check_boco2()) {
+		/* we have a BOCO2, this has to be triggered here */
+
+		/* make sure the FPGA_can access the EEPROM */
+		ret = boco_clear_bits(SPI_REG, CFG_EEPROM);
+		if (ret)
+			return ret;
+
+		/* trigger the config start */
+		ret = boco_clear_bits(SPI_REG, FPGA_PROG | FPGA_INIT_B);
+		if (ret)
+			return ret;
+
+		/* small delay for the pulse */
+		udelay(10);
+
+		/* up signal for pulse end */
+		ret = boco_set_bits(SPI_REG, FPGA_PROG);
+		if (ret)
+			return ret;
+
+		/* finally, raise INIT_B to remove the config delay */
+		ret = boco_set_bits(SPI_REG, FPGA_INIT_B);
+		if (ret)
+			return ret;
+
+	} else {
+		/* we do it the old way, with the gpio pin */
+		kw_gpio_set_valid(KM_XLX_PROGRAM_B_PIN, 1);
+		kw_gpio_direction_output(KM_XLX_PROGRAM_B_PIN, 0);
+		/* small delay for the pulse */
+		udelay(10);
+		kw_gpio_direction_input(KM_XLX_PROGRAM_B_PIN);
+	}
+
+	return 0;
+}
+
+int wait_for_fpga_config(void)
+{
+	int ret = 0;
+	u8 spictrl;
+	u32 timeout = 20000;
+
+	if (skip)
+		return 0;
+
+	if (!check_boco2()) {
+		/* we do not have BOCO2, this is not really used */
+		return 0;
+	}
+
+	printf("PCIe FPGA config:");
+	do {
+		ret = i2c_read(BOCO_ADDR, SPI_REG, 1, &spictrl, 1);
+		if (ret) {
+			printf("%s: error reading the BOCO spictrl !!\n",
+				__func__);
+			return ret;
+		}
+		if (timeout-- == 0) {
+			printf(" FPGA_DONE timeout\n");
+			return -EFAULT;
+		}
+		udelay(10);
+	} while (!(spictrl & FPGA_DONE));
+
+	printf(" done\n");
+
+	return 0;
+}
+
+#define PRST1		0x4
+#define PCIE_RST	0x10
+#define TRAFFIC_RST	0x04
+
+int fpga_reset(void)
+{
+	int ret = 0;
+	u8 resets;
+
+	if (!check_boco2()) {
+		/* we do not have BOCO2, this is not really used */
+		return 0;
+	}
+
+	/* if we have skipped, we only want to reset the PCIe part */
+	resets = skip ? PCIE_RST : PCIE_RST | TRAFFIC_RST;
+
+	ret = boco_clear_bits(PRST1, resets);
+	if (ret)
+		return ret;
+
+	/* small delay for the pulse */
+	udelay(10);
+
+	ret = boco_set_bits(PRST1, resets);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+/* the FPGA was configured, we configure the BOCO2 so that the EEPROM
+ * is available from the Bobcat SPI bus */
+int toggle_eeprom_spi_bus(void)
+{
+	int ret = 0;
+
+	if (!check_boco2()) {
+		/* we do not have BOCO2, this is not really used */
+		return 0;
+	}
+
+	ret = boco_set_bits(SPI_REG, CFG_EEPROM);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+