[U-Boot] [PATCH v3 4/4] arm: socfpga: Add FPGA driver support for Arria 10
Ley Foon Tan
lftan.linux at gmail.com
Wed May 17 08:49:21 UTC 2017
On Mon, May 15, 2017 at 6:52 PM, <tien.fong.chee at intel.com> wrote:
> From: Tien Fong Chee <tien.fong.chee at intel.com>
>
> Add FPGA driver support for Arria 10.
>
> Signed-off-by: Tien Fong Chee <tien.fong.chee at intel.com>
> ---
> arch/arm/mach-socfpga/include/mach/fpga_manager.h | 2 +
> .../include/mach/fpga_manager_arria10.h | 100 +++++
> drivers/fpga/Makefile | 1 +
> drivers/fpga/socfpga_arria10.c | 487 +++++++++++++++++++++
> include/configs/socfpga_common.h | 3 +-
> 5 files changed, 592 insertions(+), 1 deletion(-)
> create mode 100644 arch/arm/mach-socfpga/include/mach/fpga_manager_arria10.h
> create mode 100644 drivers/fpga/socfpga_arria10.c
>
> diff --git a/arch/arm/mach-socfpga/include/mach/fpga_manager.h b/arch/arm/mach-socfpga/include/mach/fpga_manager.h
> index b046c2c..a21c716 100644
> --- a/arch/arm/mach-socfpga/include/mach/fpga_manager.h
> +++ b/arch/arm/mach-socfpga/include/mach/fpga_manager.h
> @@ -12,6 +12,8 @@
>
> #if defined(CONFIG_TARGET_SOCFPGA_GEN5)
> #include <asm/arch/fpga_manager_gen5.h>
> +#elif defined(CONFIG_TARGET_SOCFPGA_ARRIA10)
> +#include <asm/arch/fpga_manager_arria10.h>
> #endif
>
> /* FPGA CD Ratio Value */
> diff --git a/arch/arm/mach-socfpga/include/mach/fpga_manager_arria10.h b/arch/arm/mach-socfpga/include/mach/fpga_manager_arria10.h
> new file mode 100644
> index 0000000..18d9580
> --- /dev/null
> +++ b/arch/arm/mach-socfpga/include/mach/fpga_manager_arria10.h
> @@ -0,0 +1,100 @@
> +/*
> + * Copyright (C) 2017 Intel Corporation <www.intel.com>
> + * All rights reserved.
> + *
> + * SPDX-License-Identifier: GPL-2.0
> + */
> +
> +#ifndef _FPGA_MANAGER_ARRIA10_H_
> +#define _FPGA_MANAGER_ARRIA10_H_
> +
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_CRC_ERROR_SET_MSK BIT(0)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_EARLY_USERMODE_SET_MSK BIT(1)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_USERMODE_SET_MSK BIT(2)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_INITDONE_OE_SET_MSK BIT(3)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_NSTATUS_PIN_SET_MSK BIT(4)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_NSTATUS_OE_SET_MSK BIT(5)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_CONDONE_PIN_SET_MSK BIT(6)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_CONDONE_OE_SET_MSK BIT(7)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_CVP_CONF_DONE_SET_MSK BIT(8)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_PR_READY_SET_MSK BIT(9)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_PR_DONE_SET_MSK BIT(10)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_PR_ERROR_SET_MSK BIT(11)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_NCONFIG_PIN_SET_MSK BIT(12)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_NCEO_OE_SET_MSK BIT(13)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_MSEL0_SET_MSK BIT(16)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_MSEL1_SET_MSK BIT(17)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_MSEL2_SET_MSK BIT(18)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_MSEL_SET_MSD (\
> + ALT_FPGAMGR_IMGCFG_STAT_F2S_MSEL0_SET_MSK |\
> + ALT_FPGAMGR_IMGCFG_STAT_F2S_MSEL1_SET_MSK |\
> + ALT_FPGAMGR_IMGCFG_STAT_F2S_MSEL2_SET_MSK)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_IMGCFG_FIFOEMPTY_SET_MSK BIT(24)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_IMGCFG_FIFOFULL_SET_MSK BIT(25)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_JTAGM_SET_MSK BIT(28)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_EMR_SET_MSK BIT(29)
> +#define ALT_FPGAMGR_IMGCFG_STAT_F2S_MSEL0_LSB 16
> +
> +#define ALT_FPGAMGR_IMGCFG_CTL_00_S2F_NENABLE_NCONFIG_SET_MSK BIT(0)
> +#define ALT_FPGAMGR_IMGCFG_CTL_00_S2F_NENABLE_NSTATUS_SET_MSK BIT(1)
> +#define ALT_FPGAMGR_IMGCFG_CTL_00_S2F_NENABLE_CONDONE_SET_MSK BIT(2)
> +#define ALT_FPGAMGR_IMGCFG_CTL_00_S2F_NCONFIG_SET_MSK BIT(8)
> +#define ALT_FPGAMGR_IMGCFG_CTL_00_S2F_NSTATUS_OE_SET_MSK BIT(16)
> +#define ALT_FPGAMGR_IMGCFG_CTL_00_S2F_CONDONE_OE_SET_MSK BIT(24)
> +
> +#define ALT_FPGAMGR_IMGCFG_CTL_01_S2F_NENABLE_CONFIG_SET_MSK BIT(0)
> +#define ALT_FPGAMGR_IMGCFG_CTL_01_S2F_PR_REQUEST_SET_MSK BIT(16)
> +#define ALT_FPGAMGR_IMGCFG_CTL_01_S2F_NCE_SET_MSK BIT(24)
> +
> +#define ALT_FPGAMGR_IMGCFG_CTL_02_EN_CFG_CTRL_SET_MSK BIT(0)
> +#define ALT_FPGAMGR_IMGCFG_CTL_02_EN_CFG_DATA_SET_MSK BIT(8)
> +#define ALT_FPGAMGR_IMGCFG_CTL_02_CDRATIO_SET_MSK 0x00030000
> +#define ALT_FPGAMGR_IMGCFG_CTL_02_CFGWIDTH_SET_MSK BIT(24)
> +#define ALT_FPGAMGR_IMGCFG_CTL_02_CDRATIO_LSB 16
> +
> +#ifndef __ASSEMBLY__
> +
> +struct socfpga_fpga_manager {
> + u32 _pad_0x0_0x7[2];
> + u32 dclkcnt;
> + u32 dclkstat;
> + u32 gpo;
> + u32 gpi;
> + u32 misci;
> + u32 _pad_0x1c_0x2f[5];
> + u32 emr_data0;
> + u32 emr_data1;
> + u32 emr_data2;
> + u32 emr_data3;
> + u32 emr_data4;
> + u32 emr_data5;
> + u32 emr_valid;
> + u32 emr_en;
> + u32 jtag_config;
> + u32 jtag_status;
> + u32 jtag_kick;
> + u32 _pad_0x5c_0x5f;
> + u32 jtag_data_w;
> + u32 jtag_data_r;
> + u32 _pad_0x68_0x6f[2];
> + u32 imgcfg_ctrl_00;
> + u32 imgcfg_ctrl_01;
> + u32 imgcfg_ctrl_02;
> + u32 _pad_0x7c_0x7f;
> + u32 imgcfg_stat;
> + u32 intr_masked_status;
> + u32 intr_mask;
> + u32 intr_polarity;
> + u32 dma_config;
> + u32 imgcfg_fifo_status;
> +};
> +
> +/* Functions */
> +int fpgamgr_program_init(u32 * rbf_data, size_t rbf_size);
> +int fpgamgr_program_fini(void);
> +int is_fpgamgr_user_mode(void);
> +int fpgamgr_wait_early_user_mode(void);
> +
> +#endif /* __ASSEMBLY__ */
> +
> +#endif /* _FPGA_MANAGER_ARRIA10_H_ */
> diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile
> index b65e5ba..08c9ff8 100644
> --- a/drivers/fpga/Makefile
> +++ b/drivers/fpga/Makefile
> @@ -21,4 +21,5 @@ obj-$(CONFIG_FPGA_STRATIX_II) += stratixII.o
> obj-$(CONFIG_FPGA_STRATIX_V) += stratixv.o
> obj-$(CONFIG_FPGA_SOCFPGA) += socfpga.o
> obj-$(CONFIG_TARGET_SOCFPGA_GEN5) += socfpga_gen5.o
> +obj-$(CONFIG_TARGET_SOCFPGA_ARRIA10) += socfpga_arria10.o
> endif
> diff --git a/drivers/fpga/socfpga_arria10.c b/drivers/fpga/socfpga_arria10.c
> new file mode 100644
> index 0000000..262e962
> --- /dev/null
> +++ b/drivers/fpga/socfpga_arria10.c
> @@ -0,0 +1,487 @@
> +/*
> + * Copyright (C) 2017 Intel Corporation <www.intel.com>
> + *
> + * SPDX-License-Identifier: GPL-2.0
> + */
> +
> +#include <asm/io.h>
> +#include <asm/arch/fpga_manager.h>
> +#include <asm/arch/reset_manager.h>
> +#include <asm/arch/system_manager.h>
> +#include <asm/arch/sdram.h>
> +#include <asm/arch/misc.h>
> +#include <altera.h>
> +#include <common.h>
> +#include <errno.h>
> +#include <wait_bit.h>
> +#include <watchdog.h>
> +
> +#define CFGWDTH_32 1
> +#define MIN_BITSTREAM_SIZECHECK 230
> +#define ENCRYPTION_OFFSET 69
> +#define COMPRESSION_OFFSET 229
> +#define FPGA_TIMEOUT_MSEC 1000 /* timeout in ms */
> +#define FPGA_TIMEOUT_CNT 0x1000000
> +
> +DECLARE_GLOBAL_DATA_PTR;
> +
> +static const struct socfpga_fpga_manager *fpga_manager_base =
> + (void *)SOCFPGA_FPGAMGRREGS_ADDRESS;
> +
> +static const struct socfpga_system_manager *system_manager_base =
> + (void *)SOCFPGA_SYSMGR_ADDRESS;
> +
> +static void fpgamgr_set_cd_ratio(unsigned long ratio);
> +
> +static uint32_t fpgamgr_get_msel(void)
> +{
> + u32 reg;
> +
> + reg = readl(&fpga_manager_base->imgcfg_stat);
> + reg = (reg & ALT_FPGAMGR_IMGCFG_STAT_F2S_MSEL_SET_MSD) >>
> + ALT_FPGAMGR_IMGCFG_STAT_F2S_MSEL0_LSB;
> +
> + return reg;
> +}
> +
> +static void fpgamgr_set_cfgwdth(int width)
> +{
> + if (width)
> + setbits_le32(&fpga_manager_base->imgcfg_ctrl_02,
> + ALT_FPGAMGR_IMGCFG_CTL_02_CFGWIDTH_SET_MSK);
> + else
> + clrbits_le32(&fpga_manager_base->imgcfg_ctrl_02,
> + ALT_FPGAMGR_IMGCFG_CTL_02_CFGWIDTH_SET_MSK);
> +}
> +
> +/* Check whether FPGA Init_Done signal is high */
> +int is_fpgamgr_initdone_high(void)
> +{
> + return (readl(&fpga_manager_base->imgcfg_stat) &
> + ALT_FPGAMGR_IMGCFG_STAT_F2S_INITDONE_OE_SET_MSK) != 0;
> +}
> +
> +int is_fpgamgr_user_mode(void)
> +{
> + return (readl(&fpga_manager_base->imgcfg_stat) &
> + ALT_FPGAMGR_IMGCFG_STAT_F2S_USERMODE_SET_MSK) != 0;
> +}
> +
> +static int wait_for_user_mode(void)
> +{
> + return wait_for_bit(__func__,
> + &fpga_manager_base->imgcfg_stat,
> + ALT_FPGAMGR_IMGCFG_STAT_F2S_USERMODE_SET_MSK,
> + 1, FPGA_TIMEOUT_MSEC, false);
> +}
> +
> +static int is_fpgamgr_early_user_mode(void)
> +{
> + return (readl(&fpga_manager_base->imgcfg_stat) &
> + ALT_FPGAMGR_IMGCFG_STAT_F2S_EARLY_USERMODE_SET_MSK) != 0;
> +}
> +
> +int fpgamgr_wait_early_user_mode(void)
> +{
> + u32 sync_data = 0xffffffff;
> + u32 i = 0;
> + unsigned start = get_timer(0);
unsigned --> unsigned long
> + unsigned long cd_ratio;
> +
> + /* Getting existing CDRATIO */
> + cd_ratio = (readl(&fpga_manager_base->imgcfg_ctrl_02) &
> + ALT_FPGAMGR_IMGCFG_CTL_02_CDRATIO_SET_MSK) >>
> + ALT_FPGAMGR_IMGCFG_CTL_02_CDRATIO_LSB;
> +
> + /* Using CDRATIO_X1 for better compatibility */
> + fpgamgr_set_cd_ratio(CDRATIO_x1);
> +
> + while (!(is_fpgamgr_early_user_mode())) {
> + if (get_timer(start) > FPGA_TIMEOUT_MSEC)
> + return -ETIMEDOUT;
> + fpgamgr_program_write((const long unsigned int *)&sync_data,
> + sizeof(sync_data));
> + udelay(FPGA_TIMEOUT_MSEC);
> + i++;
> + }
> +
> + debug("Additional %i sync word needed\n", i);
> +
> + /* restoring original CDRATIO */
> + fpgamgr_set_cd_ratio(cd_ratio);
> +
> + return 0;
> +}
> +
> +/* Read f2s_nconfig_pin and f2s_nstatus_pin; loop until de-asserted */
> +static int wait_for_nconfig_pin_and_nstatus_pin(void)
> +{
> + unsigned long mask = ALT_FPGAMGR_IMGCFG_STAT_F2S_NCONFIG_PIN_SET_MSK |
> + ALT_FPGAMGR_IMGCFG_STAT_F2S_NSTATUS_PIN_SET_MSK;
> +
> + /* Poll until f2s_nconfig_pin and f2s_nstatus_pin; loop until de-asserted,
> + * timeout at 1000ms
> + */
> + return wait_for_bit(__func__,
> + &fpga_manager_base->imgcfg_stat,
> + mask,
> + false, FPGA_TIMEOUT_MSEC, false);
> +}
> +
> +static int wait_for_f2s_nstatus_pin(unsigned long value)
> +{
> + /* Poll until f2s to specific value, timeout at 1000ms */
> + return wait_for_bit(__func__,
> + &fpga_manager_base->imgcfg_stat,
> + ALT_FPGAMGR_IMGCFG_STAT_F2S_NSTATUS_PIN_SET_MSK,
> + value, FPGA_TIMEOUT_MSEC, false);
> +}
> +
> +/* set CD ratio */
> +static void fpgamgr_set_cd_ratio(unsigned long ratio)
> +{
> + clrbits_le32(&fpga_manager_base->imgcfg_ctrl_02,
> + ALT_FPGAMGR_IMGCFG_CTL_02_CDRATIO_SET_MSK);
> +
> + setbits_le32(&fpga_manager_base->imgcfg_ctrl_02,
> + (ratio << ALT_FPGAMGR_IMGCFG_CTL_02_CDRATIO_LSB) &
> + ALT_FPGAMGR_IMGCFG_CTL_02_CDRATIO_SET_MSK);
> +}
> +
> +/* get the MSEL value, verify we are set for FPP configuration mode */
> +static int fpgamgr_verify_msel(void)
> +{
> + u32 msel = fpgamgr_get_msel();
> +
> + if ((msel != 0) && (msel != 1)) {
> + printf("Fail: read msel=%d\n", msel);
> + return -EPERM;
> + }
> +
> + return 0;
> +}
> +
> +/*
> + * Write cdratio and cdwidth based on whether the bitstream is compressed
> + * and/or encoded
> + */
> +static int fpgamgr_set_cdratio_cdwidth(unsigned int cfg_width, u32 *rbf_data,
> + size_t rbf_size)
> +{
> + unsigned int cd_ratio;
> + bool encrypt, compress;
> +
> + /*
> + * According to the bitstream specification,
> + * both encryption and compression status are
> + * in location before offset 230 of the buffer.
> + */
> + if (rbf_size < MIN_BITSTREAM_SIZECHECK)
> + return -EINVAL;
> +
> + encrypt = (rbf_data[ENCRYPTION_OFFSET] >> 2) & 3;
> + encrypt = encrypt != 0;
> +
> + compress = (rbf_data[COMPRESSION_OFFSET] >> 1) & 1;
> + compress = !compress;
> +
> + debug("header word %d = %08x\n", 69, rbf_data[69]);
> + debug("header word %d = %08x\n", 229, rbf_data[229]);
> + debug("read from rbf header: encrypt=%d compress=%d\n", encrypt, compress);
> +
> + /*
> + * from the register map description of cdratio in imgcfg_ctrl_02:
> + * Normal Configuration : 32bit Passive Parallel
> + * Partial Reconfiguration : 16bit Passive Parallel
> + */
> +
> + /*
> + * cd ratio is dependent on cfg width and whether the bitstream
> + * is encrypted and/or compressed.
> + *
> + * | width | encr. | compr. | cd ratio |
> + * | 16 | 0 | 0 | 1 |
> + * | 16 | 0 | 1 | 4 |
> + * | 16 | 1 | 0 | 2 |
> + * | 16 | 1 | 1 | 4 |
> + * | 32 | 0 | 0 | 1 |
> + * | 32 | 0 | 1 | 8 |
> + * | 32 | 1 | 0 | 4 |
> + * | 32 | 1 | 1 | 8 |
> + */
> + if (!compress && !encrypt) {
> + cd_ratio = CDRATIO_x1;
> + } else {
> + if (compress)
> + cd_ratio = CDRATIO_x4;
> + else
> + cd_ratio = CDRATIO_x2;
> +
> + /* if 32 bit, double the cd ratio (so register
> + field setting is incremented) */
> + if (cfg_width == CFGWDTH_32)
> + cd_ratio += 1;
> + }
> +
> + fpgamgr_set_cfgwdth(cfg_width);
> + fpgamgr_set_cd_ratio(cd_ratio);
> +
> + return 0;
> +}
> +
> +static int fpgamgr_reset(void)
> +{
> + unsigned long reg;
> +
> + /* S2F_NCONFIG = 0 */
> + clrbits_le32(&fpga_manager_base->imgcfg_ctrl_00,
> + ALT_FPGAMGR_IMGCFG_CTL_00_S2F_NCONFIG_SET_MSK);
> +
> + /* Wait for f2s_nstatus == 0 */
> + if (wait_for_f2s_nstatus_pin(0))
> + return -ETIME;
> +
> + /* S2F_NCONFIG = 1 */
> + setbits_le32(&fpga_manager_base->imgcfg_ctrl_00,
> + ALT_FPGAMGR_IMGCFG_CTL_00_S2F_NCONFIG_SET_MSK);
> +
> + /* Wait for f2s_nstatus == 1 */
> + if (wait_for_f2s_nstatus_pin(1))
> + return -ETIME;
> +
> + /* read and confirm f2s_condone_pin = 0 and f2s_condone_oe = 1 */
> + reg = readl(&fpga_manager_base->imgcfg_stat);
> + if ((reg & ALT_FPGAMGR_IMGCFG_STAT_F2S_CONDONE_PIN_SET_MSK) != 0)
> + return -EPERM;
> +
> + if ((reg & ALT_FPGAMGR_IMGCFG_STAT_F2S_CONDONE_OE_SET_MSK) == 0)
> + return -EPERM;
> +
> + return 0;
> +}
> +
> +/* Start the FPGA programming by initialize the FPGA Manager */
> +int fpgamgr_program_init(u32 * rbf_data, size_t rbf_size)
> +{
> + int ret;
> +
> + /* Step 1 */
> + if (fpgamgr_verify_msel())
> + return -EPERM;
> +
> + /* Step 2 */
> + if (fpgamgr_set_cdratio_cdwidth(CFGWDTH_32, rbf_data, rbf_size))
> + return -EPERM;
> +
> + /*
> + * Step 3:
> + * Make sure no other external devices are trying to interfere with
> + * programming:
> + */
> + if (wait_for_nconfig_pin_and_nstatus_pin())
> + return -ETIME;
> +
> + /*
> + * Step 4:
> + * Deassert the signal drives from HPS
> + *
> + * S2F_NCE = 1
> + * S2F_PR_REQUEST = 0
> + * EN_CFG_CTRL = 0
> + * EN_CFG_DATA = 0
> + * S2F_NCONFIG = 1
> + * S2F_NSTATUS_OE = 0
> + * S2F_CONDONE_OE = 0
> + */
> + setbits_le32(&fpga_manager_base->imgcfg_ctrl_01,
> + ALT_FPGAMGR_IMGCFG_CTL_01_S2F_NCE_SET_MSK);
> +
> + clrbits_le32(&fpga_manager_base->imgcfg_ctrl_01,
> + ALT_FPGAMGR_IMGCFG_CTL_01_S2F_PR_REQUEST_SET_MSK);
> +
> + clrbits_le32(&fpga_manager_base->imgcfg_ctrl_02,
> + ALT_FPGAMGR_IMGCFG_CTL_02_EN_CFG_DATA_SET_MSK |
> + ALT_FPGAMGR_IMGCFG_CTL_02_EN_CFG_CTRL_SET_MSK);
> +
> + setbits_le32(&fpga_manager_base->imgcfg_ctrl_00,
> + ALT_FPGAMGR_IMGCFG_CTL_00_S2F_NCONFIG_SET_MSK);
> +
> + clrbits_le32(&fpga_manager_base->imgcfg_ctrl_00,
> + ALT_FPGAMGR_IMGCFG_CTL_00_S2F_NSTATUS_OE_SET_MSK |
> + ALT_FPGAMGR_IMGCFG_CTL_00_S2F_CONDONE_OE_SET_MSK);
> +
> + /*
> + * Step 5:
> + * Enable overrides
> + * S2F_NENABLE_CONFIG = 0
> + * S2F_NENABLE_NCONFIG = 0
> + */
> + clrbits_le32(&fpga_manager_base->imgcfg_ctrl_01,
> + ALT_FPGAMGR_IMGCFG_CTL_01_S2F_NENABLE_CONFIG_SET_MSK);
> + clrbits_le32(&fpga_manager_base->imgcfg_ctrl_00,
> + ALT_FPGAMGR_IMGCFG_CTL_00_S2F_NENABLE_NCONFIG_SET_MSK);
> +
> + /*
> + * Disable driving signals that HPS doesn't need to drive.
> + * S2F_NENABLE_NSTATUS = 1
> + * S2F_NENABLE_CONDONE = 1
> + */
> + setbits_le32(&fpga_manager_base->imgcfg_ctrl_00,
> + ALT_FPGAMGR_IMGCFG_CTL_00_S2F_NENABLE_NSTATUS_SET_MSK |
> + ALT_FPGAMGR_IMGCFG_CTL_00_S2F_NENABLE_CONDONE_SET_MSK);
> +
> + /*
> + * Step 6:
> + * Drive chip select S2F_NCE = 0
> + */
> + clrbits_le32(&fpga_manager_base->imgcfg_ctrl_01,
> + ALT_FPGAMGR_IMGCFG_CTL_01_S2F_NCE_SET_MSK);
> +
> + /* Step 7 */
> + if (wait_for_nconfig_pin_and_nstatus_pin())
> + return -ETIME;
> +
> + /* Step 8 */
> + ret = fpgamgr_reset();
> +
> + if (ret)
> + return ret;
> +
> + /*
> + * Step 9:
> + * EN_CFG_CTRL and EN_CFG_DATA = 1
> + */
> + setbits_le32(&fpga_manager_base->imgcfg_ctrl_02,
> + ALT_FPGAMGR_IMGCFG_CTL_02_EN_CFG_DATA_SET_MSK |
> + ALT_FPGAMGR_IMGCFG_CTL_02_EN_CFG_CTRL_SET_MSK);
> +
> + return 0;
> +}
> +
> +/* Ensure the FPGA entering config done */
> +static int fpgamgr_program_poll_cd(void)
> +{
> + unsigned long reg, i;
> +
> + for (i = 0; i < FPGA_TIMEOUT_CNT; i++) {
> + reg = readl(&fpga_manager_base->imgcfg_stat);
> + if (reg & ALT_FPGAMGR_IMGCFG_STAT_F2S_CONDONE_PIN_SET_MSK)
> + return 0;
> +
> + if ((reg & ALT_FPGAMGR_IMGCFG_STAT_F2S_NSTATUS_PIN_SET_MSK) == 0) {
> + printf("nstatus == 0 while waiting for condone\n");
> + return -EPERM;
> + }
> + }
> +
> + if (i == FPGA_TIMEOUT_CNT)
> + return -ETIME;
> +
> + return 0;
> +}
> +
> +/* Ensure the FPGA entering user mode */
> +static int fpgamgr_program_poll_usermode(void)
> +{
> + unsigned long reg;
> + int ret = 0;
> +
> + if (fpgamgr_dclkcnt_set(0xf))
> + return -ETIME;
> +
> + ret = wait_for_user_mode();
Remove extra new line here.
> +
> + if (ret < 0) {
> + printf("%s: Failed to enter user mode with ", __func__);
> + printf("error code %d\n", ret);
> + return ret;
> + }
> +
> + /*
> + * Step 14:
> + * Stop DATA path and Dclk
> + * EN_CFG_CTRL and EN_CFG_DATA = 0
> + */
> + clrbits_le32(&fpga_manager_base->imgcfg_ctrl_02,
> + ALT_FPGAMGR_IMGCFG_CTL_02_EN_CFG_DATA_SET_MSK |
> + ALT_FPGAMGR_IMGCFG_CTL_02_EN_CFG_CTRL_SET_MSK);
> +
> + /*
> + * Step 15:
> + * Disable overrides
> + * S2F_NENABLE_CONFIG = 1
> + * S2F_NENABLE_NCONFIG = 1
> + */
> + setbits_le32(&fpga_manager_base->imgcfg_ctrl_01,
> + ALT_FPGAMGR_IMGCFG_CTL_01_S2F_NENABLE_CONFIG_SET_MSK);
> + setbits_le32(&fpga_manager_base->imgcfg_ctrl_00,
> + ALT_FPGAMGR_IMGCFG_CTL_00_S2F_NENABLE_NCONFIG_SET_MSK);
> +
> + /* Disable chip select S2F_NCE = 1 */
> + setbits_le32(&fpga_manager_base->imgcfg_ctrl_01,
> + ALT_FPGAMGR_IMGCFG_CTL_01_S2F_NCE_SET_MSK);
> +
> + /*
> + * Step 16:
> + * Final check
> + */
> + reg = readl(&fpga_manager_base->imgcfg_stat);
> + if (((reg & ALT_FPGAMGR_IMGCFG_STAT_F2S_USERMODE_SET_MSK) !=
> + ALT_FPGAMGR_IMGCFG_STAT_F2S_USERMODE_SET_MSK) ||
> + ((reg & ALT_FPGAMGR_IMGCFG_STAT_F2S_CONDONE_PIN_SET_MSK) !=
> + ALT_FPGAMGR_IMGCFG_STAT_F2S_CONDONE_PIN_SET_MSK) ||
> + ((reg & ALT_FPGAMGR_IMGCFG_STAT_F2S_NSTATUS_PIN_SET_MSK) !=
> + ALT_FPGAMGR_IMGCFG_STAT_F2S_NSTATUS_PIN_SET_MSK))
> + return -EPERM;
> +
> + return 0;
> +}
> +
> +int fpgamgr_program_fini(void)
> +{
> + /* Ensure the FPGA entering config done */
> + int status = fpgamgr_program_poll_cd();
> +
> + if (status) {
> + printf("FPGA: Poll CD failed with error code %d\n", status);
> + return -EPERM;
> + }
> + WATCHDOG_RESET();
> +
> + /* Ensure the FPGA entering user mode */
> + status = fpgamgr_program_poll_usermode();
> + if (status) {
> + printf("FPGA: Poll usermode failed with error code %d\n",
> + status);
> + return -EPERM;
> + }
> +
> + printf("Full Configuration Succeeded.\n");
> +
> + return 0;
> +}
> +
> +/*
> + * FPGA Manager to program the FPGA. This is the interface used by FPGA driver.
> + * Return 0 for sucess, non-zero for error.
> + */
> +int socfpga_load(Altera_desc *desc, const void *rbf_data, size_t rbf_size)
> +{
> + unsigned long status;
> +
> + /* disable all signals from hps peripheral controller to fpga */
> + writel(0, &system_manager_base->fpgaintf_en_global);
> +
> + /* disable all axi bridge (hps2fpga, lwhps2fpga & fpga2hps) */
> + socfpga_bridges_reset();
> +
> + /* Initialize the FPGA Manager */
> + status = fpgamgr_program_init((u32 *)rbf_data, rbf_size);
> + if (status)
> + return status;
> +
> + /* Write the RBF data to FPGA Manager */
> + fpgamgr_program_write(rbf_data, rbf_size);
> +
> + return fpgamgr_program_fini();
> +}
> diff --git a/include/configs/socfpga_common.h b/include/configs/socfpga_common.h
> index da7e4ad..992097d 100644
> --- a/include/configs/socfpga_common.h
> +++ b/include/configs/socfpga_common.h
> @@ -105,7 +105,8 @@
> /*
> * FPGA Driver
> */
> -#ifdef CONFIG_TARGET_SOCFPGA_GEN5
> +#if defined(CONFIG_TARGET_SOCFPGA_GEN5) || \
> + defined(CONFIG_TARGET_SOCFPGA_ARRIA10)
Can remove switch here since both Gen5 and Arria 10 support FPGA now.
This will convert to Kconfig later too.
> #ifdef CONFIG_CMD_FPGA
> #define CONFIG_FPGA
> #define CONFIG_FPGA_ALTERA
> --
> 1.8.2.3
>
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> https://lists.denx.de/listinfo/u-boot
More information about the U-Boot
mailing list