[V3] exynos: spl: Add a custom spi copy function

Message ID 1381237942-30354-1-git-send-email-rajeshwari.s@samsung.com
State New
Headers show

Commit Message

Rajeshwari Shinde Oct. 8, 2013, 1:12 p.m.
This patch implements a custom spi_copy funtion to copy u-boot from SF
to RAM. This is faster then iROM spi_copy funtion as this runs spi at
50Mhz and also in WORD mode of operation.

Changed a printf in pinmux.c to debug just to avoid the compilation
error in SPL.

Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Tom Wai-Hong Tam <waihong@chromium.org>
Signed-off-by: Rajeshwari S Shinde <rajeshwari.s@samsung.com>
---
Based on following patch yet to be merged:
	"[U-Boot] [PATCH 4/4] spi: exynos: Support word transfers"
Changes in V2:
	- Corrected the commit message.
	- Added a SPI timeout check.
	- Corrected the comments.
Changes in V3:
	- Rebased on the latest u-boot-spi tree.
 arch/arm/cpu/armv7/exynos/pinmux.c     |   2 +-
 arch/arm/cpu/armv7/exynos/spl_boot.c   | 122 ++++++++++++++++++++++++++++++++-
 arch/arm/include/asm/arch-exynos/spi.h |   1 +
 include/configs/exynos5250-dt.h        |   2 +
 4 files changed, 123 insertions(+), 4 deletions(-)

Comments

Rajeshwari Birje Oct. 9, 2013, 7:55 a.m. | #1
Hi Minkyu Kang,

Since this patch is related to arch/arm spi booting, I had a doubt
where would it get merged in u-boot-samsung.git or u-boot-spi.git.

This patch is based on "[U-Boot] [PATCH 4/4] spi: exynos: Support word
transfers" which is already merged in u-boot-spi.git.

Regards,
Rajeshwari Shinde.

On Tue, Oct 8, 2013 at 6:42 PM, Rajeshwari S Shinde
<rajeshwari.s@samsung.com> wrote:
> This patch implements a custom spi_copy funtion to copy u-boot from SF
> to RAM. This is faster then iROM spi_copy funtion as this runs spi at
> 50Mhz and also in WORD mode of operation.
>
> Changed a printf in pinmux.c to debug just to avoid the compilation
> error in SPL.
>
> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
> Signed-off-by: Tom Wai-Hong Tam <waihong@chromium.org>
> Signed-off-by: Rajeshwari S Shinde <rajeshwari.s@samsung.com>
> ---
> Based on following patch yet to be merged:
>         "[U-Boot] [PATCH 4/4] spi: exynos: Support word transfers"
> Changes in V2:
>         - Corrected the commit message.
>         - Added a SPI timeout check.
>         - Corrected the comments.
> Changes in V3:
>         - Rebased on the latest u-boot-spi tree.
>  arch/arm/cpu/armv7/exynos/pinmux.c     |   2 +-
>  arch/arm/cpu/armv7/exynos/spl_boot.c   | 122 ++++++++++++++++++++++++++++++++-
>  arch/arm/include/asm/arch-exynos/spi.h |   1 +
>  include/configs/exynos5250-dt.h        |   2 +
>  4 files changed, 123 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
> index 8002bce..74cc700 100644
> --- a/arch/arm/cpu/armv7/exynos/pinmux.c
> +++ b/arch/arm/cpu/armv7/exynos/pinmux.c
> @@ -462,7 +462,7 @@ static int exynos4_pinmux_config(int peripheral, int flags)
>         case PERIPH_ID_SDMMC1:
>         case PERIPH_ID_SDMMC3:
>         case PERIPH_ID_SDMMC4:
> -               printf("SDMMC device %d not implemented\n", peripheral);
> +               debug("SDMMC device %d not implemented\n", peripheral);
>                 return -1;
>         default:
>                 debug("%s: invalid peripheral %d", __func__, peripheral);
> diff --git a/arch/arm/cpu/armv7/exynos/spl_boot.c b/arch/arm/cpu/armv7/exynos/spl_boot.c
> index 3651c00..6faf13f 100644
> --- a/arch/arm/cpu/armv7/exynos/spl_boot.c
> +++ b/arch/arm/cpu/armv7/exynos/spl_boot.c
> @@ -10,8 +10,11 @@
>  #include <asm/arch/clock.h>
>  #include <asm/arch/clk.h>
>  #include <asm/arch/dmc.h>
> +#include <asm/arch/periph.h>
> +#include <asm/arch/pinmux.h>
>  #include <asm/arch/power.h>
>  #include <asm/arch/spl.h>
> +#include <asm/arch/spi.h>
>
>  #include "common_setup.h"
>  #include "clock_init.h"
> @@ -59,6 +62,119 @@ static int config_branch_prediction(int set_cr_z)
>  }
>  #endif
>
> +static void spi_rx_tx(struct exynos_spi *regs, int todo,
> +                       void *dinp, void const *doutp, int i)
> +{
> +       uint *rxp = (uint *)(dinp + (i * (32 * 1024)));
> +       int rx_lvl, tx_lvl;
> +       uint out_bytes, in_bytes;
> +
> +       out_bytes = todo;
> +       in_bytes = todo;
> +       setbits_le32(&regs->ch_cfg, SPI_CH_RST);
> +       clrbits_le32(&regs->ch_cfg, SPI_CH_RST);
> +       writel(((todo * 8) / 32) | SPI_PACKET_CNT_EN, &regs->pkt_cnt);
> +
> +       while (in_bytes) {
> +               uint32_t spi_sts;
> +               int temp;
> +
> +               spi_sts = readl(&regs->spi_sts);
> +               rx_lvl = ((spi_sts >> 15) & 0x7f);
> +               tx_lvl = ((spi_sts >> 6) & 0x7f);
> +               while (tx_lvl < 32 && out_bytes) {
> +                       temp = 0xffffffff;
> +                       writel(temp, &regs->tx_data);
> +                       out_bytes -= 4;
> +                       tx_lvl += 4;
> +               }
> +               while (rx_lvl >= 4 && in_bytes) {
> +                       temp = readl(&regs->rx_data);
> +                       if (rxp)
> +                               *rxp++ = temp;
> +                       in_bytes -= 4;
> +                       rx_lvl -= 4;
> +               }
> +       }
> +}
> +
> +/*
> + * Copy uboot from spi flash to RAM
> + *
> + * @parma uboot_size   size of u-boot to copy
> + * @param uboot_addr   address in u-boot to copy
> + */
> +static void exynos_spi_copy(unsigned int uboot_size, unsigned int uboot_addr)
> +{
> +       int upto, todo;
> +       int i, timeout = 100;
> +       struct exynos_spi *regs = (struct exynos_spi *)CONFIG_ENV_SPI_BASE;
> +
> +       set_spi_clk(PERIPH_ID_SPI1, 50000000); /* set spi clock to 50Mhz */
> +       /* set the spi1 GPIO */
> +       exynos_pinmux_config(PERIPH_ID_SPI1, PINMUX_FLAG_NONE);
> +
> +       /* set pktcnt and enable it */
> +       writel(4 | SPI_PACKET_CNT_EN, &regs->pkt_cnt);
> +       /* set FB_CLK_SEL */
> +       writel(SPI_FB_DELAY_180, &regs->fb_clk);
> +       /* set CH_WIDTH and BUS_WIDTH as word */
> +       setbits_le32(&regs->mode_cfg, SPI_MODE_CH_WIDTH_WORD |
> +                                       SPI_MODE_BUS_WIDTH_WORD);
> +       clrbits_le32(&regs->ch_cfg, SPI_CH_CPOL_L); /* CPOL: active high */
> +
> +       /* clear rx and tx channel if set priveously */
> +       clrbits_le32(&regs->ch_cfg, SPI_RX_CH_ON | SPI_TX_CH_ON);
> +
> +       setbits_le32(&regs->swap_cfg, SPI_RX_SWAP_EN |
> +                       SPI_RX_BYTE_SWAP |
> +                       SPI_RX_HWORD_SWAP);
> +
> +       /* do a soft reset */
> +       setbits_le32(&regs->ch_cfg, SPI_CH_RST);
> +       clrbits_le32(&regs->ch_cfg, SPI_CH_RST);
> +
> +       /* now set rx and tx channel ON */
> +       setbits_le32(&regs->ch_cfg, SPI_RX_CH_ON | SPI_TX_CH_ON | SPI_CH_HS_EN);
> +       clrbits_le32(&regs->cs_reg, SPI_SLAVE_SIG_INACT); /* CS low */
> +
> +       /* Send read instruction (0x3h) followed by a 24 bit addr */
> +       writel((SF_READ_DATA_CMD << 24) | SPI_FLASH_UBOOT_POS, &regs->tx_data);
> +
> +       /* waiting for TX done */
> +       while (!(readl(&regs->spi_sts) & SPI_ST_TX_DONE)) {
> +               if (!timeout) {
> +                       debug("SPI TIMEOUT\n");
> +                       break;
> +               }
> +               timeout--;
> +       }
> +
> +       for (upto = 0, i = 0; upto < uboot_size; upto += todo, i++) {
> +               todo = min(uboot_size - upto, (1 << 15));
> +               spi_rx_tx(regs, todo, (void *)(uboot_addr),
> +                         (void *)(SPI_FLASH_UBOOT_POS), i);
> +       }
> +
> +       setbits_le32(&regs->cs_reg, SPI_SLAVE_SIG_INACT);/* make the CS high */
> +
> +       /*
> +        * Let put controller mode to BYTE as
> +        * SPI driver does not support WORD mode yet
> +        */
> +       clrbits_le32(&regs->mode_cfg, SPI_MODE_CH_WIDTH_WORD |
> +                                       SPI_MODE_BUS_WIDTH_WORD);
> +       writel(0, &regs->swap_cfg);
> +
> +       /*
> +        * Flush spi tx, rx fifos and reset the SPI controller
> +        * and clear rx/tx channel
> +        */
> +       clrsetbits_le32(&regs->ch_cfg, SPI_CH_HS_EN, SPI_CH_RST);
> +       clrbits_le32(&regs->ch_cfg, SPI_CH_RST);
> +       clrbits_le32(&regs->ch_cfg, SPI_TX_CH_ON | SPI_RX_CH_ON);
> +}
> +
>  /*
>  * Copy U-boot from mmc to RAM:
>  * COPY_BL2_FNPTR_ADDR: Address in iRAM, which Contains
> @@ -70,6 +186,7 @@ void copy_uboot_to_ram(void)
>
>         u32 (*copy_bl2)(u32 offset, u32 nblock, u32 dst) = NULL;
>         u32 offset = 0, size = 0;
> +       struct spl_machine_param *param = spl_get_machine_params();
>  #ifdef CONFIG_SUPPORT_EMMC_BOOT
>         u32 (*copy_bl2_from_emmc)(u32 nblock, u32 dst);
>         void (*end_bootop_from_emmc)(void);
> @@ -91,9 +208,8 @@ void copy_uboot_to_ram(void)
>         switch (bootmode) {
>  #ifdef CONFIG_SPI_BOOTING
>         case BOOT_MODE_SERIAL:
> -               offset = SPI_FLASH_UBOOT_POS;
> -               size = CONFIG_BL2_SIZE;
> -               copy_bl2 = get_irom_func(SPI_INDEX);
> +               /* Customised function to copy u-boot from SF */
> +               exynos_spi_copy(param->uboot_size, CONFIG_SYS_TEXT_BASE);
>                 break;
>  #endif
>         case BOOT_MODE_MMC:
> diff --git a/arch/arm/include/asm/arch-exynos/spi.h b/arch/arm/include/asm/arch-exynos/spi.h
> index 147c1a7..0ba931b 100644
> --- a/arch/arm/include/asm/arch-exynos/spi.h
> +++ b/arch/arm/include/asm/arch-exynos/spi.h
> @@ -30,6 +30,7 @@ struct exynos_spi {
>  #define EXYNOS_SPI_MAX_FREQ    50000000
>
>  #define SPI_TIMEOUT_MS         10
> +#define SF_READ_DATA_CMD       0x3
>
>  /* SPI_CHCFG */
>  #define SPI_CH_HS_EN           (1 << 6)
> diff --git a/include/configs/exynos5250-dt.h b/include/configs/exynos5250-dt.h
> index 8c21909..1d32396 100644
> --- a/include/configs/exynos5250-dt.h
> +++ b/include/configs/exynos5250-dt.h
> @@ -154,6 +154,7 @@
>  #define COPY_BL2_FNPTR_ADDR    0x02020030
>
>  #define CONFIG_SPL_LIBCOMMON_SUPPORT
> +#define CONFIG_SPL_GPIO_SUPPORT
>
>  /* specific .lds file */
>  #define CONFIG_SPL_LDSCRIPT    "board/samsung/common/exynos-uboot-spl.lds"
> @@ -292,6 +293,7 @@
>  /* SPI */
>  #define CONFIG_ENV_IS_IN_SPI_FLASH
>  #define CONFIG_SPI_FLASH
> +#define CONFIG_ENV_SPI_BASE    0x12D30000
>
>  #ifdef CONFIG_SPI_FLASH
>  #define CONFIG_EXYNOS_SPI
> --
> 1.7.12.4
>
> _______________________________________________
> U-Boot mailing list
> U-Boot@lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot
Minkyu Kang Dec. 2, 2013, 8:48 a.m. | #2
On 09/10/13 16:55, Rajeshwari Birje wrote:
> Hi Minkyu Kang,
> 
> Since this patch is related to arch/arm spi booting, I had a doubt
> where would it get merged in u-boot-samsung.git or u-boot-spi.git.
> 
> This patch is based on "[U-Boot] [PATCH 4/4] spi: exynos: Support word
> transfers" which is already merged in u-boot-spi.git.

Now, that patch is merged to u-boot-samsung.
Anyway I'm OK to pick this patch to u-boot-spi.

> 
> Regards,
> Rajeshwari Shinde.
> 
> On Tue, Oct 8, 2013 at 6:42 PM, Rajeshwari S Shinde
> <rajeshwari.s@samsung.com> wrote:
>> This patch implements a custom spi_copy funtion to copy u-boot from SF
>> to RAM. This is faster then iROM spi_copy funtion as this runs spi at
>> 50Mhz and also in WORD mode of operation.
>>
>> Changed a printf in pinmux.c to debug just to avoid the compilation
>> error in SPL.
>>
>> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
>> Signed-off-by: Tom Wai-Hong Tam <waihong@chromium.org>
>> Signed-off-by: Rajeshwari S Shinde <rajeshwari.s@samsung.com>
>> ---
>> Based on following patch yet to be merged:
>>         "[U-Boot] [PATCH 4/4] spi: exynos: Support word transfers"
>> Changes in V2:
>>         - Corrected the commit message.
>>         - Added a SPI timeout check.
>>         - Corrected the comments.
>> Changes in V3:
>>         - Rebased on the latest u-boot-spi tree.
>>  arch/arm/cpu/armv7/exynos/pinmux.c     |   2 +-
>>  arch/arm/cpu/armv7/exynos/spl_boot.c   | 122 ++++++++++++++++++++++++++++++++-
>>  arch/arm/include/asm/arch-exynos/spi.h |   1 +
>>  include/configs/exynos5250-dt.h        |   2 +
>>  4 files changed, 123 insertions(+), 4 deletions(-)
>>
>> diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
>> index 8002bce..74cc700 100644
>> --- a/arch/arm/cpu/armv7/exynos/pinmux.c
>> +++ b/arch/arm/cpu/armv7/exynos/pinmux.c
>> @@ -462,7 +462,7 @@ static int exynos4_pinmux_config(int peripheral, int flags)
>>         case PERIPH_ID_SDMMC1:
>>         case PERIPH_ID_SDMMC3:
>>         case PERIPH_ID_SDMMC4:
>> -               printf("SDMMC device %d not implemented\n", peripheral);
>> +               debug("SDMMC device %d not implemented\n", peripheral);

unrelated change.

>>                 return -1;
>>         default:
>>                 debug("%s: invalid peripheral %d", __func__, peripheral);
>> diff --git a/arch/arm/cpu/armv7/exynos/spl_boot.c b/arch/arm/cpu/armv7/exynos/spl_boot.c
>> index 3651c00..6faf13f 100644
>> --- a/arch/arm/cpu/armv7/exynos/spl_boot.c
>> +++ b/arch/arm/cpu/armv7/exynos/spl_boot.c
>> @@ -10,8 +10,11 @@
>>  #include <asm/arch/clock.h>
>>  #include <asm/arch/clk.h>
>>  #include <asm/arch/dmc.h>
>> +#include <asm/arch/periph.h>
>> +#include <asm/arch/pinmux.h>
>>  #include <asm/arch/power.h>
>>  #include <asm/arch/spl.h>
>> +#include <asm/arch/spi.h>
>>
>>  #include "common_setup.h"
>>  #include "clock_init.h"
>> @@ -59,6 +62,119 @@ static int config_branch_prediction(int set_cr_z)
>>  }
>>  #endif
>>
>> +static void spi_rx_tx(struct exynos_spi *regs, int todo,
>> +                       void *dinp, void const *doutp, int i)
>> +{
>> +       uint *rxp = (uint *)(dinp + (i * (32 * 1024)));
>> +       int rx_lvl, tx_lvl;
>> +       uint out_bytes, in_bytes;
>> +
>> +       out_bytes = todo;
>> +       in_bytes = todo;
>> +       setbits_le32(&regs->ch_cfg, SPI_CH_RST);
>> +       clrbits_le32(&regs->ch_cfg, SPI_CH_RST);
>> +       writel(((todo * 8) / 32) | SPI_PACKET_CNT_EN, &regs->pkt_cnt);
>> +
>> +       while (in_bytes) {
>> +               uint32_t spi_sts;
>> +               int temp;
>> +
>> +               spi_sts = readl(&regs->spi_sts);
>> +               rx_lvl = ((spi_sts >> 15) & 0x7f);
>> +               tx_lvl = ((spi_sts >> 6) & 0x7f);
>> +               while (tx_lvl < 32 && out_bytes) {
>> +                       temp = 0xffffffff;
>> +                       writel(temp, &regs->tx_data);
>> +                       out_bytes -= 4;
>> +                       tx_lvl += 4;
>> +               }
>> +               while (rx_lvl >= 4 && in_bytes) {
>> +                       temp = readl(&regs->rx_data);
>> +                       if (rxp)
>> +                               *rxp++ = temp;
>> +                       in_bytes -= 4;
>> +                       rx_lvl -= 4;
>> +               }
>> +       }
>> +}
>> +
>> +/*
>> + * Copy uboot from spi flash to RAM
>> + *
>> + * @parma uboot_size   size of u-boot to copy
>> + * @param uboot_addr   address in u-boot to copy
>> + */
>> +static void exynos_spi_copy(unsigned int uboot_size, unsigned int uboot_addr)
>> +{
>> +       int upto, todo;
>> +       int i, timeout = 100;
>> +       struct exynos_spi *regs = (struct exynos_spi *)CONFIG_ENV_SPI_BASE;
>> +
>> +       set_spi_clk(PERIPH_ID_SPI1, 50000000); /* set spi clock to 50Mhz */
>> +       /* set the spi1 GPIO */
>> +       exynos_pinmux_config(PERIPH_ID_SPI1, PINMUX_FLAG_NONE);
>> +
>> +       /* set pktcnt and enable it */
>> +       writel(4 | SPI_PACKET_CNT_EN, &regs->pkt_cnt);
>> +       /* set FB_CLK_SEL */
>> +       writel(SPI_FB_DELAY_180, &regs->fb_clk);
>> +       /* set CH_WIDTH and BUS_WIDTH as word */
>> +       setbits_le32(&regs->mode_cfg, SPI_MODE_CH_WIDTH_WORD |
>> +                                       SPI_MODE_BUS_WIDTH_WORD);
>> +       clrbits_le32(&regs->ch_cfg, SPI_CH_CPOL_L); /* CPOL: active high */
>> +
>> +       /* clear rx and tx channel if set priveously */
>> +       clrbits_le32(&regs->ch_cfg, SPI_RX_CH_ON | SPI_TX_CH_ON);
>> +
>> +       setbits_le32(&regs->swap_cfg, SPI_RX_SWAP_EN |
>> +                       SPI_RX_BYTE_SWAP |
>> +                       SPI_RX_HWORD_SWAP);
>> +
>> +       /* do a soft reset */
>> +       setbits_le32(&regs->ch_cfg, SPI_CH_RST);
>> +       clrbits_le32(&regs->ch_cfg, SPI_CH_RST);
>> +
>> +       /* now set rx and tx channel ON */
>> +       setbits_le32(&regs->ch_cfg, SPI_RX_CH_ON | SPI_TX_CH_ON | SPI_CH_HS_EN);
>> +       clrbits_le32(&regs->cs_reg, SPI_SLAVE_SIG_INACT); /* CS low */
>> +
>> +       /* Send read instruction (0x3h) followed by a 24 bit addr */
>> +       writel((SF_READ_DATA_CMD << 24) | SPI_FLASH_UBOOT_POS, &regs->tx_data);
>> +
>> +       /* waiting for TX done */
>> +       while (!(readl(&regs->spi_sts) & SPI_ST_TX_DONE)) {
>> +               if (!timeout) {
>> +                       debug("SPI TIMEOUT\n");
>> +                       break;
>> +               }
>> +               timeout--;
>> +       }
>> +
>> +       for (upto = 0, i = 0; upto < uboot_size; upto += todo, i++) {
>> +               todo = min(uboot_size - upto, (1 << 15));
>> +               spi_rx_tx(regs, todo, (void *)(uboot_addr),
>> +                         (void *)(SPI_FLASH_UBOOT_POS), i);
>> +       }
>> +
>> +       setbits_le32(&regs->cs_reg, SPI_SLAVE_SIG_INACT);/* make the CS high */
>> +
>> +       /*
>> +        * Let put controller mode to BYTE as
>> +        * SPI driver does not support WORD mode yet
>> +        */
>> +       clrbits_le32(&regs->mode_cfg, SPI_MODE_CH_WIDTH_WORD |
>> +                                       SPI_MODE_BUS_WIDTH_WORD);
>> +       writel(0, &regs->swap_cfg);
>> +
>> +       /*
>> +        * Flush spi tx, rx fifos and reset the SPI controller
>> +        * and clear rx/tx channel
>> +        */
>> +       clrsetbits_le32(&regs->ch_cfg, SPI_CH_HS_EN, SPI_CH_RST);
>> +       clrbits_le32(&regs->ch_cfg, SPI_CH_RST);
>> +       clrbits_le32(&regs->ch_cfg, SPI_TX_CH_ON | SPI_RX_CH_ON);
>> +}
>> +
>>  /*
>>  * Copy U-boot from mmc to RAM:
>>  * COPY_BL2_FNPTR_ADDR: Address in iRAM, which Contains
>> @@ -70,6 +186,7 @@ void copy_uboot_to_ram(void)
>>
>>         u32 (*copy_bl2)(u32 offset, u32 nblock, u32 dst) = NULL;
>>         u32 offset = 0, size = 0;
>> +       struct spl_machine_param *param = spl_get_machine_params();
>>  #ifdef CONFIG_SUPPORT_EMMC_BOOT
>>         u32 (*copy_bl2_from_emmc)(u32 nblock, u32 dst);
>>         void (*end_bootop_from_emmc)(void);
>> @@ -91,9 +208,8 @@ void copy_uboot_to_ram(void)
>>         switch (bootmode) {
>>  #ifdef CONFIG_SPI_BOOTING
>>         case BOOT_MODE_SERIAL:
>> -               offset = SPI_FLASH_UBOOT_POS;
>> -               size = CONFIG_BL2_SIZE;
>> -               copy_bl2 = get_irom_func(SPI_INDEX);
>> +               /* Customised function to copy u-boot from SF */
>> +               exynos_spi_copy(param->uboot_size, CONFIG_SYS_TEXT_BASE);
>>                 break;
>>  #endif
>>         case BOOT_MODE_MMC:
>> diff --git a/arch/arm/include/asm/arch-exynos/spi.h b/arch/arm/include/asm/arch-exynos/spi.h
>> index 147c1a7..0ba931b 100644
>> --- a/arch/arm/include/asm/arch-exynos/spi.h
>> +++ b/arch/arm/include/asm/arch-exynos/spi.h
>> @@ -30,6 +30,7 @@ struct exynos_spi {
>>  #define EXYNOS_SPI_MAX_FREQ    50000000
>>
>>  #define SPI_TIMEOUT_MS         10
>> +#define SF_READ_DATA_CMD       0x3
>>
>>  /* SPI_CHCFG */
>>  #define SPI_CH_HS_EN           (1 << 6)
>> diff --git a/include/configs/exynos5250-dt.h b/include/configs/exynos5250-dt.h
>> index 8c21909..1d32396 100644
>> --- a/include/configs/exynos5250-dt.h
>> +++ b/include/configs/exynos5250-dt.h
>> @@ -154,6 +154,7 @@
>>  #define COPY_BL2_FNPTR_ADDR    0x02020030
>>
>>  #define CONFIG_SPL_LIBCOMMON_SUPPORT
>> +#define CONFIG_SPL_GPIO_SUPPORT
>>
>>  /* specific .lds file */
>>  #define CONFIG_SPL_LDSCRIPT    "board/samsung/common/exynos-uboot-spl.lds"
>> @@ -292,6 +293,7 @@
>>  /* SPI */
>>  #define CONFIG_ENV_IS_IN_SPI_FLASH
>>  #define CONFIG_SPI_FLASH
>> +#define CONFIG_ENV_SPI_BASE    0x12D30000
>>
>>  #ifdef CONFIG_SPI_FLASH
>>  #define CONFIG_EXYNOS_SPI
>> --
>> 1.7.12.4
>>
>> _______________________________________________
>> U-Boot mailing list
>> U-Boot@lists.denx.de
>> http://lists.denx.de/mailman/listinfo/u-boot
> 
> 
> 

Thanks,
Minkyu Kang.
Rajeshwari Birje Dec. 2, 2013, 1:17 p.m. | #3
Hi Minkyu Kang,

Thank you for comments.



On Mon, Dec 2, 2013 at 2:18 PM, Minkyu Kang <mk7.kang@samsung.com> wrote:
> On 09/10/13 16:55, Rajeshwari Birje wrote:
>> Hi Minkyu Kang,
>>
>> Since this patch is related to arch/arm spi booting, I had a doubt
>> where would it get merged in u-boot-samsung.git or u-boot-spi.git.
>>
>> This patch is based on "[U-Boot] [PATCH 4/4] spi: exynos: Support word
>> transfers" which is already merged in u-boot-spi.git.
>
> Now, that patch is merged to u-boot-samsung.
> Anyway I'm OK to pick this patch to u-boot-spi.
>
>>
>> Regards,
>> Rajeshwari Shinde.
>>
>> On Tue, Oct 8, 2013 at 6:42 PM, Rajeshwari S Shinde
>> <rajeshwari.s@samsung.com> wrote:
>>> This patch implements a custom spi_copy funtion to copy u-boot from SF
>>> to RAM. This is faster then iROM spi_copy funtion as this runs spi at
>>> 50Mhz and also in WORD mode of operation.
>>>
>>> Changed a printf in pinmux.c to debug just to avoid the compilation
>>> error in SPL.
>>>
>>> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
>>> Signed-off-by: Tom Wai-Hong Tam <waihong@chromium.org>
>>> Signed-off-by: Rajeshwari S Shinde <rajeshwari.s@samsung.com>
>>> ---
>>> Based on following patch yet to be merged:
>>>         "[U-Boot] [PATCH 4/4] spi: exynos: Support word transfers"
>>> Changes in V2:
>>>         - Corrected the commit message.
>>>         - Added a SPI timeout check.
>>>         - Corrected the comments.
>>> Changes in V3:
>>>         - Rebased on the latest u-boot-spi tree.
>>>  arch/arm/cpu/armv7/exynos/pinmux.c     |   2 +-
>>>  arch/arm/cpu/armv7/exynos/spl_boot.c   | 122 ++++++++++++++++++++++++++++++++-
>>>  arch/arm/include/asm/arch-exynos/spi.h |   1 +
>>>  include/configs/exynos5250-dt.h        |   2 +
>>>  4 files changed, 123 insertions(+), 4 deletions(-)
>>>
>>> diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
>>> index 8002bce..74cc700 100644
>>> --- a/arch/arm/cpu/armv7/exynos/pinmux.c
>>> +++ b/arch/arm/cpu/armv7/exynos/pinmux.c
>>> @@ -462,7 +462,7 @@ static int exynos4_pinmux_config(int peripheral, int flags)
>>>         case PERIPH_ID_SDMMC1:
>>>         case PERIPH_ID_SDMMC3:
>>>         case PERIPH_ID_SDMMC4:
>>> -               printf("SDMMC device %d not implemented\n", peripheral);
>>> +               debug("SDMMC device %d not implemented\n", peripheral);
>
> unrelated change.
>
As mentioned commit message
"Changed a printf in pinmux.c to debug just to avoid the compilation
error in SPL."
>>>                 return -1;
>>>         default:
>>>                 debug("%s: invalid peripheral %d", __func__, peripheral);
>>> diff --git a/arch/arm/cpu/armv7/exynos/spl_boot.c b/arch/arm/cpu/armv7/exynos/spl_boot.c
>>> index 3651c00..6faf13f 100644
>>> --- a/arch/arm/cpu/armv7/exynos/spl_boot.c
>>> +++ b/arch/arm/cpu/armv7/exynos/spl_boot.c
>>> @@ -10,8 +10,11 @@
>>>  #include <asm/arch/clock.h>
>>>  #include <asm/arch/clk.h>
>>>  #include <asm/arch/dmc.h>
>>> +#include <asm/arch/periph.h>
>>> +#include <asm/arch/pinmux.h>
>>>  #include <asm/arch/power.h>
>>>  #include <asm/arch/spl.h>
>>> +#include <asm/arch/spi.h>
>>>
>>>  #include "common_setup.h"
>>>  #include "clock_init.h"
>>> @@ -59,6 +62,119 @@ static int config_branch_prediction(int set_cr_z)
>>>  }
>>>  #endif
>>>
>>> +static void spi_rx_tx(struct exynos_spi *regs, int todo,
>>> +                       void *dinp, void const *doutp, int i)
>>> +{
>>> +       uint *rxp = (uint *)(dinp + (i * (32 * 1024)));
>>> +       int rx_lvl, tx_lvl;
>>> +       uint out_bytes, in_bytes;
>>> +
>>> +       out_bytes = todo;
>>> +       in_bytes = todo;
>>> +       setbits_le32(&regs->ch_cfg, SPI_CH_RST);
>>> +       clrbits_le32(&regs->ch_cfg, SPI_CH_RST);
>>> +       writel(((todo * 8) / 32) | SPI_PACKET_CNT_EN, &regs->pkt_cnt);
>>> +
>>> +       while (in_bytes) {
>>> +               uint32_t spi_sts;
>>> +               int temp;
>>> +
>>> +               spi_sts = readl(&regs->spi_sts);
>>> +               rx_lvl = ((spi_sts >> 15) & 0x7f);
>>> +               tx_lvl = ((spi_sts >> 6) & 0x7f);
>>> +               while (tx_lvl < 32 && out_bytes) {
>>> +                       temp = 0xffffffff;
>>> +                       writel(temp, &regs->tx_data);
>>> +                       out_bytes -= 4;
>>> +                       tx_lvl += 4;
>>> +               }
>>> +               while (rx_lvl >= 4 && in_bytes) {
>>> +                       temp = readl(&regs->rx_data);
>>> +                       if (rxp)
>>> +                               *rxp++ = temp;
>>> +                       in_bytes -= 4;
>>> +                       rx_lvl -= 4;
>>> +               }
>>> +       }
>>> +}
>>> +
>>> +/*
>>> + * Copy uboot from spi flash to RAM
>>> + *
>>> + * @parma uboot_size   size of u-boot to copy
>>> + * @param uboot_addr   address in u-boot to copy
>>> + */
>>> +static void exynos_spi_copy(unsigned int uboot_size, unsigned int uboot_addr)
>>> +{
>>> +       int upto, todo;
>>> +       int i, timeout = 100;
>>> +       struct exynos_spi *regs = (struct exynos_spi *)CONFIG_ENV_SPI_BASE;
>>> +
>>> +       set_spi_clk(PERIPH_ID_SPI1, 50000000); /* set spi clock to 50Mhz */
>>> +       /* set the spi1 GPIO */
>>> +       exynos_pinmux_config(PERIPH_ID_SPI1, PINMUX_FLAG_NONE);
>>> +
>>> +       /* set pktcnt and enable it */
>>> +       writel(4 | SPI_PACKET_CNT_EN, &regs->pkt_cnt);
>>> +       /* set FB_CLK_SEL */
>>> +       writel(SPI_FB_DELAY_180, &regs->fb_clk);
>>> +       /* set CH_WIDTH and BUS_WIDTH as word */
>>> +       setbits_le32(&regs->mode_cfg, SPI_MODE_CH_WIDTH_WORD |
>>> +                                       SPI_MODE_BUS_WIDTH_WORD);
>>> +       clrbits_le32(&regs->ch_cfg, SPI_CH_CPOL_L); /* CPOL: active high */
>>> +
>>> +       /* clear rx and tx channel if set priveously */
>>> +       clrbits_le32(&regs->ch_cfg, SPI_RX_CH_ON | SPI_TX_CH_ON);
>>> +
>>> +       setbits_le32(&regs->swap_cfg, SPI_RX_SWAP_EN |
>>> +                       SPI_RX_BYTE_SWAP |
>>> +                       SPI_RX_HWORD_SWAP);
>>> +
>>> +       /* do a soft reset */
>>> +       setbits_le32(&regs->ch_cfg, SPI_CH_RST);
>>> +       clrbits_le32(&regs->ch_cfg, SPI_CH_RST);
>>> +
>>> +       /* now set rx and tx channel ON */
>>> +       setbits_le32(&regs->ch_cfg, SPI_RX_CH_ON | SPI_TX_CH_ON | SPI_CH_HS_EN);
>>> +       clrbits_le32(&regs->cs_reg, SPI_SLAVE_SIG_INACT); /* CS low */
>>> +
>>> +       /* Send read instruction (0x3h) followed by a 24 bit addr */
>>> +       writel((SF_READ_DATA_CMD << 24) | SPI_FLASH_UBOOT_POS, &regs->tx_data);
>>> +
>>> +       /* waiting for TX done */
>>> +       while (!(readl(&regs->spi_sts) & SPI_ST_TX_DONE)) {
>>> +               if (!timeout) {
>>> +                       debug("SPI TIMEOUT\n");
>>> +                       break;
>>> +               }
>>> +               timeout--;
>>> +       }
>>> +
>>> +       for (upto = 0, i = 0; upto < uboot_size; upto += todo, i++) {
>>> +               todo = min(uboot_size - upto, (1 << 15));
>>> +               spi_rx_tx(regs, todo, (void *)(uboot_addr),
>>> +                         (void *)(SPI_FLASH_UBOOT_POS), i);
>>> +       }
>>> +
>>> +       setbits_le32(&regs->cs_reg, SPI_SLAVE_SIG_INACT);/* make the CS high */
>>> +
>>> +       /*
>>> +        * Let put controller mode to BYTE as
>>> +        * SPI driver does not support WORD mode yet
>>> +        */
>>> +       clrbits_le32(&regs->mode_cfg, SPI_MODE_CH_WIDTH_WORD |
>>> +                                       SPI_MODE_BUS_WIDTH_WORD);
>>> +       writel(0, &regs->swap_cfg);
>>> +
>>> +       /*
>>> +        * Flush spi tx, rx fifos and reset the SPI controller
>>> +        * and clear rx/tx channel
>>> +        */
>>> +       clrsetbits_le32(&regs->ch_cfg, SPI_CH_HS_EN, SPI_CH_RST);
>>> +       clrbits_le32(&regs->ch_cfg, SPI_CH_RST);
>>> +       clrbits_le32(&regs->ch_cfg, SPI_TX_CH_ON | SPI_RX_CH_ON);
>>> +}
>>> +
>>>  /*
>>>  * Copy U-boot from mmc to RAM:
>>>  * COPY_BL2_FNPTR_ADDR: Address in iRAM, which Contains
>>> @@ -70,6 +186,7 @@ void copy_uboot_to_ram(void)
>>>
>>>         u32 (*copy_bl2)(u32 offset, u32 nblock, u32 dst) = NULL;
>>>         u32 offset = 0, size = 0;
>>> +       struct spl_machine_param *param = spl_get_machine_params();
>>>  #ifdef CONFIG_SUPPORT_EMMC_BOOT
>>>         u32 (*copy_bl2_from_emmc)(u32 nblock, u32 dst);
>>>         void (*end_bootop_from_emmc)(void);
>>> @@ -91,9 +208,8 @@ void copy_uboot_to_ram(void)
>>>         switch (bootmode) {
>>>  #ifdef CONFIG_SPI_BOOTING
>>>         case BOOT_MODE_SERIAL:
>>> -               offset = SPI_FLASH_UBOOT_POS;
>>> -               size = CONFIG_BL2_SIZE;
>>> -               copy_bl2 = get_irom_func(SPI_INDEX);
>>> +               /* Customised function to copy u-boot from SF */
>>> +               exynos_spi_copy(param->uboot_size, CONFIG_SYS_TEXT_BASE);
>>>                 break;
>>>  #endif
>>>         case BOOT_MODE_MMC:
>>> diff --git a/arch/arm/include/asm/arch-exynos/spi.h b/arch/arm/include/asm/arch-exynos/spi.h
>>> index 147c1a7..0ba931b 100644
>>> --- a/arch/arm/include/asm/arch-exynos/spi.h
>>> +++ b/arch/arm/include/asm/arch-exynos/spi.h
>>> @@ -30,6 +30,7 @@ struct exynos_spi {
>>>  #define EXYNOS_SPI_MAX_FREQ    50000000
>>>
>>>  #define SPI_TIMEOUT_MS         10
>>> +#define SF_READ_DATA_CMD       0x3
>>>
>>>  /* SPI_CHCFG */
>>>  #define SPI_CH_HS_EN           (1 << 6)
>>> diff --git a/include/configs/exynos5250-dt.h b/include/configs/exynos5250-dt.h
>>> index 8c21909..1d32396 100644
>>> --- a/include/configs/exynos5250-dt.h
>>> +++ b/include/configs/exynos5250-dt.h
>>> @@ -154,6 +154,7 @@
>>>  #define COPY_BL2_FNPTR_ADDR    0x02020030
>>>
>>>  #define CONFIG_SPL_LIBCOMMON_SUPPORT
>>> +#define CONFIG_SPL_GPIO_SUPPORT
>>>
>>>  /* specific .lds file */
>>>  #define CONFIG_SPL_LDSCRIPT    "board/samsung/common/exynos-uboot-spl.lds"
>>> @@ -292,6 +293,7 @@
>>>  /* SPI */
>>>  #define CONFIG_ENV_IS_IN_SPI_FLASH
>>>  #define CONFIG_SPI_FLASH
>>> +#define CONFIG_ENV_SPI_BASE    0x12D30000
>>>
>>>  #ifdef CONFIG_SPI_FLASH
>>>  #define CONFIG_EXYNOS_SPI
>>> --
>>> 1.7.12.4
>>>
>>> _______________________________________________
>>> U-Boot mailing list
>>> U-Boot@lists.denx.de
>>> http://lists.denx.de/mailman/listinfo/u-boot
>>
>>
>>
>
> Thanks,
> Minkyu Kang.
>
Minkyu Kang Dec. 3, 2013, 6:30 a.m. | #4
On 02/12/13 22:17, Rajeshwari Birje wrote:
> Hi Minkyu Kang,
> 
> Thank you for comments.
> 
> 
> 
> On Mon, Dec 2, 2013 at 2:18 PM, Minkyu Kang <mk7.kang@samsung.com> wrote:
>> On 09/10/13 16:55, Rajeshwari Birje wrote:
>>> Hi Minkyu Kang,
>>>
>>> Since this patch is related to arch/arm spi booting, I had a doubt
>>> where would it get merged in u-boot-samsung.git or u-boot-spi.git.
>>>
>>> This patch is based on "[U-Boot] [PATCH 4/4] spi: exynos: Support word
>>> transfers" which is already merged in u-boot-spi.git.
>>
>> Now, that patch is merged to u-boot-samsung.
>> Anyway I'm OK to pick this patch to u-boot-spi.
>>
>>>
>>> Regards,
>>> Rajeshwari Shinde.
>>>
>>> On Tue, Oct 8, 2013 at 6:42 PM, Rajeshwari S Shinde
>>> <rajeshwari.s@samsung.com> wrote:
>>>> This patch implements a custom spi_copy funtion to copy u-boot from SF
>>>> to RAM. This is faster then iROM spi_copy funtion as this runs spi at
>>>> 50Mhz and also in WORD mode of operation.
>>>>
>>>> Changed a printf in pinmux.c to debug just to avoid the compilation
>>>> error in SPL.
>>>>
>>>> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
>>>> Signed-off-by: Tom Wai-Hong Tam <waihong@chromium.org>
>>>> Signed-off-by: Rajeshwari S Shinde <rajeshwari.s@samsung.com>
>>>> ---
>>>> Based on following patch yet to be merged:
>>>>         "[U-Boot] [PATCH 4/4] spi: exynos: Support word transfers"
>>>> Changes in V2:
>>>>         - Corrected the commit message.
>>>>         - Added a SPI timeout check.
>>>>         - Corrected the comments.
>>>> Changes in V3:
>>>>         - Rebased on the latest u-boot-spi tree.
>>>>  arch/arm/cpu/armv7/exynos/pinmux.c     |   2 +-
>>>>  arch/arm/cpu/armv7/exynos/spl_boot.c   | 122 ++++++++++++++++++++++++++++++++-
>>>>  arch/arm/include/asm/arch-exynos/spi.h |   1 +
>>>>  include/configs/exynos5250-dt.h        |   2 +
>>>>  4 files changed, 123 insertions(+), 4 deletions(-)
>>>>
>>>> diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
>>>> index 8002bce..74cc700 100644
>>>> --- a/arch/arm/cpu/armv7/exynos/pinmux.c
>>>> +++ b/arch/arm/cpu/armv7/exynos/pinmux.c
>>>> @@ -462,7 +462,7 @@ static int exynos4_pinmux_config(int peripheral, int flags)
>>>>         case PERIPH_ID_SDMMC1:
>>>>         case PERIPH_ID_SDMMC3:
>>>>         case PERIPH_ID_SDMMC4:
>>>> -               printf("SDMMC device %d not implemented\n", peripheral);
>>>> +               debug("SDMMC device %d not implemented\n", peripheral);
>>
>> unrelated change.
>>
> As mentioned commit message
> "Changed a printf in pinmux.c to debug just to avoid the compilation
> error in SPL."
>>>>                 return -1;
>>>>         default:
>>>>                 debug("%s: invalid peripheral %d", __func__, peripheral);
>>>> diff --git a/arch/arm/cpu/armv7/exynos/spl_boot.c b/arch/arm/cpu/armv7/exynos/spl_boot.c
>>>> index 3651c00..6faf13f 100644
>>>> --- a/arch/arm/cpu/armv7/exynos/spl_boot.c
>>>> +++ b/arch/arm/cpu/armv7/exynos/spl_boot.c
>>>> @@ -10,8 +10,11 @@
>>>>  #include <asm/arch/clock.h>
>>>>  #include <asm/arch/clk.h>
>>>>  #include <asm/arch/dmc.h>
>>>> +#include <asm/arch/periph.h>
>>>> +#include <asm/arch/pinmux.h>
>>>>  #include <asm/arch/power.h>
>>>>  #include <asm/arch/spl.h>
>>>> +#include <asm/arch/spi.h>
>>>>
>>>>  #include "common_setup.h"
>>>>  #include "clock_init.h"
>>>> @@ -59,6 +62,119 @@ static int config_branch_prediction(int set_cr_z)
>>>>  }
>>>>  #endif
>>>>
>>>> +static void spi_rx_tx(struct exynos_spi *regs, int todo,
>>>> +                       void *dinp, void const *doutp, int i)
>>>> +{
>>>> +       uint *rxp = (uint *)(dinp + (i * (32 * 1024)));
>>>> +       int rx_lvl, tx_lvl;
>>>> +       uint out_bytes, in_bytes;
>>>> +
>>>> +       out_bytes = todo;
>>>> +       in_bytes = todo;
>>>> +       setbits_le32(&regs->ch_cfg, SPI_CH_RST);
>>>> +       clrbits_le32(&regs->ch_cfg, SPI_CH_RST);
>>>> +       writel(((todo * 8) / 32) | SPI_PACKET_CNT_EN, &regs->pkt_cnt);
>>>> +
>>>> +       while (in_bytes) {
>>>> +               uint32_t spi_sts;
>>>> +               int temp;
>>>> +
>>>> +               spi_sts = readl(&regs->spi_sts);
>>>> +               rx_lvl = ((spi_sts >> 15) & 0x7f);
>>>> +               tx_lvl = ((spi_sts >> 6) & 0x7f);
>>>> +               while (tx_lvl < 32 && out_bytes) {
>>>> +                       temp = 0xffffffff;
>>>> +                       writel(temp, &regs->tx_data);
>>>> +                       out_bytes -= 4;
>>>> +                       tx_lvl += 4;
>>>> +               }
>>>> +               while (rx_lvl >= 4 && in_bytes) {
>>>> +                       temp = readl(&regs->rx_data);
>>>> +                       if (rxp)
>>>> +                               *rxp++ = temp;
>>>> +                       in_bytes -= 4;
>>>> +                       rx_lvl -= 4;
>>>> +               }
>>>> +       }
>>>> +}
>>>> +
>>>> +/*
>>>> + * Copy uboot from spi flash to RAM
>>>> + *
>>>> + * @parma uboot_size   size of u-boot to copy
>>>> + * @param uboot_addr   address in u-boot to copy
>>>> + */
>>>> +static void exynos_spi_copy(unsigned int uboot_size, unsigned int uboot_addr)
>>>> +{
>>>> +       int upto, todo;
>>>> +       int i, timeout = 100;
>>>> +       struct exynos_spi *regs = (struct exynos_spi *)CONFIG_ENV_SPI_BASE;
>>>> +
>>>> +       set_spi_clk(PERIPH_ID_SPI1, 50000000); /* set spi clock to 50Mhz */
>>>> +       /* set the spi1 GPIO */
>>>> +       exynos_pinmux_config(PERIPH_ID_SPI1, PINMUX_FLAG_NONE);
>>>> +
>>>> +       /* set pktcnt and enable it */
>>>> +       writel(4 | SPI_PACKET_CNT_EN, &regs->pkt_cnt);
>>>> +       /* set FB_CLK_SEL */
>>>> +       writel(SPI_FB_DELAY_180, &regs->fb_clk);
>>>> +       /* set CH_WIDTH and BUS_WIDTH as word */
>>>> +       setbits_le32(&regs->mode_cfg, SPI_MODE_CH_WIDTH_WORD |
>>>> +                                       SPI_MODE_BUS_WIDTH_WORD);
>>>> +       clrbits_le32(&regs->ch_cfg, SPI_CH_CPOL_L); /* CPOL: active high */
>>>> +
>>>> +       /* clear rx and tx channel if set priveously */
>>>> +       clrbits_le32(&regs->ch_cfg, SPI_RX_CH_ON | SPI_TX_CH_ON);
>>>> +
>>>> +       setbits_le32(&regs->swap_cfg, SPI_RX_SWAP_EN |
>>>> +                       SPI_RX_BYTE_SWAP |
>>>> +                       SPI_RX_HWORD_SWAP);
>>>> +
>>>> +       /* do a soft reset */
>>>> +       setbits_le32(&regs->ch_cfg, SPI_CH_RST);
>>>> +       clrbits_le32(&regs->ch_cfg, SPI_CH_RST);
>>>> +
>>>> +       /* now set rx and tx channel ON */
>>>> +       setbits_le32(&regs->ch_cfg, SPI_RX_CH_ON | SPI_TX_CH_ON | SPI_CH_HS_EN);
>>>> +       clrbits_le32(&regs->cs_reg, SPI_SLAVE_SIG_INACT); /* CS low */
>>>> +
>>>> +       /* Send read instruction (0x3h) followed by a 24 bit addr */
>>>> +       writel((SF_READ_DATA_CMD << 24) | SPI_FLASH_UBOOT_POS, &regs->tx_data);
>>>> +
>>>> +       /* waiting for TX done */
>>>> +       while (!(readl(&regs->spi_sts) & SPI_ST_TX_DONE)) {
>>>> +               if (!timeout) {
>>>> +                       debug("SPI TIMEOUT\n");
>>>> +                       break;
>>>> +               }
>>>> +               timeout--;
>>>> +       }
>>>> +
>>>> +       for (upto = 0, i = 0; upto < uboot_size; upto += todo, i++) {
>>>> +               todo = min(uboot_size - upto, (1 << 15));
>>>> +               spi_rx_tx(regs, todo, (void *)(uboot_addr),
>>>> +                         (void *)(SPI_FLASH_UBOOT_POS), i);
>>>> +       }
>>>> +
>>>> +       setbits_le32(&regs->cs_reg, SPI_SLAVE_SIG_INACT);/* make the CS high */
>>>> +
>>>> +       /*
>>>> +        * Let put controller mode to BYTE as
>>>> +        * SPI driver does not support WORD mode yet
>>>> +        */
>>>> +       clrbits_le32(&regs->mode_cfg, SPI_MODE_CH_WIDTH_WORD |
>>>> +                                       SPI_MODE_BUS_WIDTH_WORD);
>>>> +       writel(0, &regs->swap_cfg);
>>>> +
>>>> +       /*
>>>> +        * Flush spi tx, rx fifos and reset the SPI controller
>>>> +        * and clear rx/tx channel
>>>> +        */
>>>> +       clrsetbits_le32(&regs->ch_cfg, SPI_CH_HS_EN, SPI_CH_RST);
>>>> +       clrbits_le32(&regs->ch_cfg, SPI_CH_RST);
>>>> +       clrbits_le32(&regs->ch_cfg, SPI_TX_CH_ON | SPI_RX_CH_ON);
>>>> +}
>>>> +
>>>>  /*
>>>>  * Copy U-boot from mmc to RAM:
>>>>  * COPY_BL2_FNPTR_ADDR: Address in iRAM, which Contains
>>>> @@ -70,6 +186,7 @@ void copy_uboot_to_ram(void)
>>>>
>>>>         u32 (*copy_bl2)(u32 offset, u32 nblock, u32 dst) = NULL;
>>>>         u32 offset = 0, size = 0;
>>>> +       struct spl_machine_param *param = spl_get_machine_params();
>>>>  #ifdef CONFIG_SUPPORT_EMMC_BOOT
>>>>         u32 (*copy_bl2_from_emmc)(u32 nblock, u32 dst);
>>>>         void (*end_bootop_from_emmc)(void);
>>>> @@ -91,9 +208,8 @@ void copy_uboot_to_ram(void)
>>>>         switch (bootmode) {
>>>>  #ifdef CONFIG_SPI_BOOTING
>>>>         case BOOT_MODE_SERIAL:
>>>> -               offset = SPI_FLASH_UBOOT_POS;
>>>> -               size = CONFIG_BL2_SIZE;
>>>> -               copy_bl2 = get_irom_func(SPI_INDEX);
>>>> +               /* Customised function to copy u-boot from SF */
>>>> +               exynos_spi_copy(param->uboot_size, CONFIG_SYS_TEXT_BASE);
>>>>                 break;
>>>>  #endif
>>>>         case BOOT_MODE_MMC:
>>>> diff --git a/arch/arm/include/asm/arch-exynos/spi.h b/arch/arm/include/asm/arch-exynos/spi.h
>>>> index 147c1a7..0ba931b 100644
>>>> --- a/arch/arm/include/asm/arch-exynos/spi.h
>>>> +++ b/arch/arm/include/asm/arch-exynos/spi.h
>>>> @@ -30,6 +30,7 @@ struct exynos_spi {
>>>>  #define EXYNOS_SPI_MAX_FREQ    50000000
>>>>
>>>>  #define SPI_TIMEOUT_MS         10
>>>> +#define SF_READ_DATA_CMD       0x3
>>>>
>>>>  /* SPI_CHCFG */
>>>>  #define SPI_CH_HS_EN           (1 << 6)
>>>> diff --git a/include/configs/exynos5250-dt.h b/include/configs/exynos5250-dt.h
>>>> index 8c21909..1d32396 100644
>>>> --- a/include/configs/exynos5250-dt.h
>>>> +++ b/include/configs/exynos5250-dt.h
>>>> @@ -154,6 +154,7 @@
>>>>  #define COPY_BL2_FNPTR_ADDR    0x02020030
>>>>
>>>>  #define CONFIG_SPL_LIBCOMMON_SUPPORT
>>>> +#define CONFIG_SPL_GPIO_SUPPORT
>>>>
>>>>  /* specific .lds file */
>>>>  #define CONFIG_SPL_LDSCRIPT    "board/samsung/common/exynos-uboot-spl.lds"
>>>> @@ -292,6 +293,7 @@
>>>>  /* SPI */
>>>>  #define CONFIG_ENV_IS_IN_SPI_FLASH
>>>>  #define CONFIG_SPI_FLASH
>>>> +#define CONFIG_ENV_SPI_BASE    0x12D30000
>>>>
>>>>  #ifdef CONFIG_SPI_FLASH
>>>>  #define CONFIG_EXYNOS_SPI
>>>> --
>>>> 1.7.12.4
>>>>
>>>> _______________________________________________
>>>> U-Boot mailing list
>>>> U-Boot@lists.denx.de
>>>> http://lists.denx.de/mailman/listinfo/u-boot
>>>
>>>
>>>
>>
>> Thanks,
>> Minkyu Kang.
>>

applied to u-boot-samsung.

Thanks,
Minkyu Kang.

Patch

diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
index 8002bce..74cc700 100644
--- a/arch/arm/cpu/armv7/exynos/pinmux.c
+++ b/arch/arm/cpu/armv7/exynos/pinmux.c
@@ -462,7 +462,7 @@  static int exynos4_pinmux_config(int peripheral, int flags)
 	case PERIPH_ID_SDMMC1:
 	case PERIPH_ID_SDMMC3:
 	case PERIPH_ID_SDMMC4:
-		printf("SDMMC device %d not implemented\n", peripheral);
+		debug("SDMMC device %d not implemented\n", peripheral);
 		return -1;
 	default:
 		debug("%s: invalid peripheral %d", __func__, peripheral);
diff --git a/arch/arm/cpu/armv7/exynos/spl_boot.c b/arch/arm/cpu/armv7/exynos/spl_boot.c
index 3651c00..6faf13f 100644
--- a/arch/arm/cpu/armv7/exynos/spl_boot.c
+++ b/arch/arm/cpu/armv7/exynos/spl_boot.c
@@ -10,8 +10,11 @@ 
 #include <asm/arch/clock.h>
 #include <asm/arch/clk.h>
 #include <asm/arch/dmc.h>
+#include <asm/arch/periph.h>
+#include <asm/arch/pinmux.h>
 #include <asm/arch/power.h>
 #include <asm/arch/spl.h>
+#include <asm/arch/spi.h>
 
 #include "common_setup.h"
 #include "clock_init.h"
@@ -59,6 +62,119 @@  static int config_branch_prediction(int set_cr_z)
 }
 #endif
 
+static void spi_rx_tx(struct exynos_spi *regs, int todo,
+			void *dinp, void const *doutp, int i)
+{
+	uint *rxp = (uint *)(dinp + (i * (32 * 1024)));
+	int rx_lvl, tx_lvl;
+	uint out_bytes, in_bytes;
+
+	out_bytes = todo;
+	in_bytes = todo;
+	setbits_le32(&regs->ch_cfg, SPI_CH_RST);
+	clrbits_le32(&regs->ch_cfg, SPI_CH_RST);
+	writel(((todo * 8) / 32) | SPI_PACKET_CNT_EN, &regs->pkt_cnt);
+
+	while (in_bytes) {
+		uint32_t spi_sts;
+		int temp;
+
+		spi_sts = readl(&regs->spi_sts);
+		rx_lvl = ((spi_sts >> 15) & 0x7f);
+		tx_lvl = ((spi_sts >> 6) & 0x7f);
+		while (tx_lvl < 32 && out_bytes) {
+			temp = 0xffffffff;
+			writel(temp, &regs->tx_data);
+			out_bytes -= 4;
+			tx_lvl += 4;
+		}
+		while (rx_lvl >= 4 && in_bytes) {
+			temp = readl(&regs->rx_data);
+			if (rxp)
+				*rxp++ = temp;
+			in_bytes -= 4;
+			rx_lvl -= 4;
+		}
+	}
+}
+
+/*
+ * Copy uboot from spi flash to RAM
+ *
+ * @parma uboot_size	size of u-boot to copy
+ * @param uboot_addr	address in u-boot to copy
+ */
+static void exynos_spi_copy(unsigned int uboot_size, unsigned int uboot_addr)
+{
+	int upto, todo;
+	int i, timeout = 100;
+	struct exynos_spi *regs = (struct exynos_spi *)CONFIG_ENV_SPI_BASE;
+
+	set_spi_clk(PERIPH_ID_SPI1, 50000000); /* set spi clock to 50Mhz */
+	/* set the spi1 GPIO */
+	exynos_pinmux_config(PERIPH_ID_SPI1, PINMUX_FLAG_NONE);
+
+	/* set pktcnt and enable it */
+	writel(4 | SPI_PACKET_CNT_EN, &regs->pkt_cnt);
+	/* set FB_CLK_SEL */
+	writel(SPI_FB_DELAY_180, &regs->fb_clk);
+	/* set CH_WIDTH and BUS_WIDTH as word */
+	setbits_le32(&regs->mode_cfg, SPI_MODE_CH_WIDTH_WORD |
+					SPI_MODE_BUS_WIDTH_WORD);
+	clrbits_le32(&regs->ch_cfg, SPI_CH_CPOL_L); /* CPOL: active high */
+
+	/* clear rx and tx channel if set priveously */
+	clrbits_le32(&regs->ch_cfg, SPI_RX_CH_ON | SPI_TX_CH_ON);
+
+	setbits_le32(&regs->swap_cfg, SPI_RX_SWAP_EN |
+			SPI_RX_BYTE_SWAP |
+			SPI_RX_HWORD_SWAP);
+
+	/* do a soft reset */
+	setbits_le32(&regs->ch_cfg, SPI_CH_RST);
+	clrbits_le32(&regs->ch_cfg, SPI_CH_RST);
+
+	/* now set rx and tx channel ON */
+	setbits_le32(&regs->ch_cfg, SPI_RX_CH_ON | SPI_TX_CH_ON | SPI_CH_HS_EN);
+	clrbits_le32(&regs->cs_reg, SPI_SLAVE_SIG_INACT); /* CS low */
+
+	/* Send read instruction (0x3h) followed by a 24 bit addr */
+	writel((SF_READ_DATA_CMD << 24) | SPI_FLASH_UBOOT_POS, &regs->tx_data);
+
+	/* waiting for TX done */
+	while (!(readl(&regs->spi_sts) & SPI_ST_TX_DONE)) {
+		if (!timeout) {
+			debug("SPI TIMEOUT\n");
+			break;
+		}
+		timeout--;
+	}
+
+	for (upto = 0, i = 0; upto < uboot_size; upto += todo, i++) {
+		todo = min(uboot_size - upto, (1 << 15));
+		spi_rx_tx(regs, todo, (void *)(uboot_addr),
+			  (void *)(SPI_FLASH_UBOOT_POS), i);
+	}
+
+	setbits_le32(&regs->cs_reg, SPI_SLAVE_SIG_INACT);/* make the CS high */
+
+	/*
+	 * Let put controller mode to BYTE as
+	 * SPI driver does not support WORD mode yet
+	 */
+	clrbits_le32(&regs->mode_cfg, SPI_MODE_CH_WIDTH_WORD |
+					SPI_MODE_BUS_WIDTH_WORD);
+	writel(0, &regs->swap_cfg);
+
+	/*
+	 * Flush spi tx, rx fifos and reset the SPI controller
+	 * and clear rx/tx channel
+	 */
+	clrsetbits_le32(&regs->ch_cfg, SPI_CH_HS_EN, SPI_CH_RST);
+	clrbits_le32(&regs->ch_cfg, SPI_CH_RST);
+	clrbits_le32(&regs->ch_cfg, SPI_TX_CH_ON | SPI_RX_CH_ON);
+}
+
 /*
 * Copy U-boot from mmc to RAM:
 * COPY_BL2_FNPTR_ADDR: Address in iRAM, which Contains
@@ -70,6 +186,7 @@  void copy_uboot_to_ram(void)
 
 	u32 (*copy_bl2)(u32 offset, u32 nblock, u32 dst) = NULL;
 	u32 offset = 0, size = 0;
+	struct spl_machine_param *param = spl_get_machine_params();
 #ifdef CONFIG_SUPPORT_EMMC_BOOT
 	u32 (*copy_bl2_from_emmc)(u32 nblock, u32 dst);
 	void (*end_bootop_from_emmc)(void);
@@ -91,9 +208,8 @@  void copy_uboot_to_ram(void)
 	switch (bootmode) {
 #ifdef CONFIG_SPI_BOOTING
 	case BOOT_MODE_SERIAL:
-		offset = SPI_FLASH_UBOOT_POS;
-		size = CONFIG_BL2_SIZE;
-		copy_bl2 = get_irom_func(SPI_INDEX);
+		/* Customised function to copy u-boot from SF */
+		exynos_spi_copy(param->uboot_size, CONFIG_SYS_TEXT_BASE);
 		break;
 #endif
 	case BOOT_MODE_MMC:
diff --git a/arch/arm/include/asm/arch-exynos/spi.h b/arch/arm/include/asm/arch-exynos/spi.h
index 147c1a7..0ba931b 100644
--- a/arch/arm/include/asm/arch-exynos/spi.h
+++ b/arch/arm/include/asm/arch-exynos/spi.h
@@ -30,6 +30,7 @@  struct exynos_spi {
 #define EXYNOS_SPI_MAX_FREQ	50000000
 
 #define SPI_TIMEOUT_MS		10
+#define SF_READ_DATA_CMD	0x3
 
 /* SPI_CHCFG */
 #define SPI_CH_HS_EN		(1 << 6)
diff --git a/include/configs/exynos5250-dt.h b/include/configs/exynos5250-dt.h
index 8c21909..1d32396 100644
--- a/include/configs/exynos5250-dt.h
+++ b/include/configs/exynos5250-dt.h
@@ -154,6 +154,7 @@ 
 #define COPY_BL2_FNPTR_ADDR	0x02020030
 
 #define CONFIG_SPL_LIBCOMMON_SUPPORT
+#define CONFIG_SPL_GPIO_SUPPORT
 
 /* specific .lds file */
 #define CONFIG_SPL_LDSCRIPT	"board/samsung/common/exynos-uboot-spl.lds"
@@ -292,6 +293,7 @@ 
 /* SPI */
 #define CONFIG_ENV_IS_IN_SPI_FLASH
 #define CONFIG_SPI_FLASH
+#define CONFIG_ENV_SPI_BASE	0x12D30000
 
 #ifdef CONFIG_SPI_FLASH
 #define CONFIG_EXYNOS_SPI