[U-Boot] [PATCH] arm:exynos4:samsung Support for NURI target
Minkyu Kang
mk7.kang at samsung.com
Fri Oct 28 10:00:56 CEST 2011
Dear Lukasz Majewski,
On 10/20/2011 05:07 PM, Lukasz Majewski wrote:
> This patch adds support for Samsung's Exynos4 (C210) Nuri reference
> board.
>
> New exynos4_nuri board has been added to boards.cfg
>
> Signed-off-by: Lukasz Majewski <l.majewski at samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
> Cc: Minkyu Kang <mk7.kang at samsung.com>
> ---
> Checkpatch output:
> total: 0 errors, 0 warnings, 891 lines checked
> ---
> board/samsung/nuri/Makefile | 45 ++++
> board/samsung/nuri/lowlevel_init.S | 395 ++++++++++++++++++++++++++++++++++++
> board/samsung/nuri/nuri.c | 237 +++++++++++++++++++++
> boards.cfg | 1 +
> include/configs/exynos4_nuri.h | 207 +++++++++++++++++++
> 5 files changed, 885 insertions(+), 0 deletions(-)
> create mode 100644 board/samsung/nuri/Makefile
> create mode 100644 board/samsung/nuri/lowlevel_init.S
> create mode 100644 board/samsung/nuri/nuri.c
> create mode 100644 include/configs/exynos4_nuri.h
You missing MAINTAINER entry.
>
> diff --git a/board/samsung/nuri/nuri.c b/board/samsung/nuri/nuri.c
> new file mode 100644
> index 0000000..6cf126b
> --- /dev/null
> +++ b/board/samsung/nuri/nuri.c
> @@ -0,0 +1,237 @@
> +/*
> + * Copyright (C) 2011 Samsung Electronics
> + * Minkyu Kang <mk7.kang at samsung.com>
> + * Kyungmin Park <kyungmin.park at samsung.com>
> + * Łukasz Majewski <l.majewski at samsung.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., 59 Temple Place, Suite 330, Boston,
> + * MA 02111-1307 USA
> + */
> +
> +#include <common.h>
> +#include <asm/io.h>
> +#include <asm/arch/adc.h>
> +#include <asm/arch/gpio.h>
> +#include <asm/arch/mmc.h>
> +
> +DECLARE_GLOBAL_DATA_PTR;
> +
> +struct s5pc210_gpio_part1 *gpio1;
> +struct s5pc210_gpio_part2 *gpio2;
> +unsigned int board_rev;
> +
> +u32 get_board_rev(void)
> +{
> + return board_rev;
> +}
> +
> +static void check_hw_revision(void);
> +
> +int board_init(void)
> +{
> + gpio1 = (struct s5pc210_gpio_part1 *) S5PC210_GPIO_PART1_BASE;
> + gpio2 = (struct s5pc210_gpio_part2 *) S5PC210_GPIO_PART2_BASE;
> +
> + gd->bd->bi_arch_number = MACH_TYPE_UNIVERSAL_C210;
no need.
please define CONFIG_MACH_TYPE on exynos4_nuri.h.
> + gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
> +
> + check_hw_revision();
> + printf("HW Revision:\t0x%x\n", board_rev);
> +
> + return 0;
> +}
> +
> +int dram_init(void)
> +{
> + gd->ram_size = \
> + get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE) +
> + get_ram_size((long *)PHYS_SDRAM_2, PHYS_SDRAM_2_SIZE) +
> + get_ram_size((long *)PHYS_SDRAM_3, PHYS_SDRAM_3_SIZE) +
> + get_ram_size((long *)PHYS_SDRAM_4, PHYS_SDRAM_4_SIZE);
> +
> + return 0;
> +}
> +
> +void dram_init_banksize(void)
> +{
> + gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
> + gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
> + gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
> + gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
> + gd->bd->bi_dram[2].start = PHYS_SDRAM_3;
> + gd->bd->bi_dram[2].size = PHYS_SDRAM_3_SIZE;
> + gd->bd->bi_dram[3].start = PHYS_SDRAM_4;
> + gd->bd->bi_dram[3].size = PHYS_SDRAM_4_SIZE;
> +}
> +
> +static unsigned short get_adc_value(int channel)
> +{
> + struct s5p_adc *adc = (struct s5p_adc *)samsung_get_base_adc();
> + unsigned short ret = 0;
> + unsigned int reg;
> + unsigned int loop = 0;
> +
> + writel(channel & 0xF, &adc->adcmux);
> + writel((1 << 14) | (49 << 6), &adc->adccon);
> + writel(1000 & 0xffff, &adc->adcdly);
> + writel(readl(&adc->adccon) | (1 << 16), &adc->adccon); /* 12 bit */
> + udelay(10);
> + writel(readl(&adc->adccon) | (1 << 0), &adc->adccon); /* Enable */
> + udelay(10);
We don't allow magic values.
Please fix it.
> +
> + do {
> + udelay(1);
> + reg = readl(&adc->adccon);
> + } while (!(reg & (1 << 15)) && (loop++ < 1000));
ditto.
> +
> + ret = readl(&adc->adcdat0) & 0xFFF;
> +
> + return ret;
> +}
> +
> +static unsigned int get_hw_revision(void)
> +{
> + int hwrev, mode0, mode1;
> +
> + mode0 = get_adc_value(1); /* HWREV_MODE0 */
> + mode1 = get_adc_value(2); /* HWREV_MODE1 */
> +
> + /*
> + * XXX Always set the default hwrev as the latest board
> + * ADC = (voltage) / 3.3 * 4096
> + */
> + hwrev = 3;
> +
> +#define IS_RANGE(x, min, max) ((x) > (min) && (x) < (max))
> + if (IS_RANGE(mode0, 80, 200) && IS_RANGE(mode1, 80, 200))
> + hwrev = 0x0; /* 0.01V 0.01V */
> + if (IS_RANGE(mode0, 750, 1000) && IS_RANGE(mode1, 80, 200))
> + hwrev = 0x1; /* 610mV 0.01V */
> + if (IS_RANGE(mode0, 1300, 1700) && IS_RANGE(mode1, 80, 200))
> + hwrev = 0x2; /* 1.16V 0.01V */
> + if (IS_RANGE(mode0, 2000, 2400) && IS_RANGE(mode1, 80, 200))
> + hwrev = 0x3; /* 1.79V 0.01V */
> +#undef IS_RANGE
> +
> + debug("mode0: %d, mode1: %d, hwrev 0x%x\n", mode0, mode1, hwrev);
> +
> + return hwrev;
> +}
> +
> +static void check_hw_revision(void)
> +{
> + int hwrev;
> +
> + hwrev = get_hw_revision();
> +
> + board_rev |= hwrev;
> +}
> +
> +#ifdef CONFIG_DISPLAY_BOARDINFO
> +int checkboard(void)
> +{
> + puts("Board:\tNuri C210\n");
What is board's name exactly?
Nuri C210? or Exynos4 Nuri?
> + return 0;
> +}
> +#endif
> +
> +#ifdef CONFIG_GENERIC_MMC
> +int board_mmc_init(bd_t *bis)
> +{
> + int i, err;
> +
> + /* MASSMEMORY_EN: GPL[1] -> output LOW */
> + s5p_gpio_direction_output(&gpio2->l1, 1, 0);
> + s5p_gpio_set_pull(&gpio2->l1, 1, GPIO_PULL_NONE);
> +
> + /*
> + * eMMC GPIO:
> + * SDR 8-bit at 48MHz at MMC0
> + * GPK0[0] SD_0_CLK(2)
> + * GPK0[1] SD_0_CMD(2)
> + * GPK0[2] SD_0_CDn -> Not used
> + * GPK0[3:6] SD_0_DATA[0:3](2)
> + * GPK1[3:6] SD_0_DATA[0:3](3)
> + *
> + * DDR 4-bit at 26MHz at MMC4
> + * GPK0[0] SD_4_CLK(3)
> + * GPK0[1] SD_4_CMD(3)
> + * GPK0[2] SD_4_CDn -> Not used
> + * GPK0[3:6] SD_4_DATA[0:3](3)
> + * GPK1[3:6] SD_4_DATA[4:7](4)
> + */
> + for (i = 0; i < 7; i++) {
> + if (i == 2)
> + continue;
> + /* GPK0[0:6] special function 2 */
> + s5p_gpio_cfg_pin(&gpio2->k0, i, 0x2);
Please use GPIO_FUNC(x) macro.
> + /* GPK0[0:6] pull disable */
> + s5p_gpio_set_pull(&gpio2->k0, i, GPIO_PULL_NONE);
> + /* GPK0[0:6] drv 4x */
> + s5p_gpio_set_drv(&gpio2->k0, i, GPIO_DRV_4X);
> + }
> +
> + for (i = 3; i < 7; i++) {
> + /* GPK1[3:6] special function 3 */
> + s5p_gpio_cfg_pin(&gpio2->k1, i, 0x3);
ditto.
> + /* GPK1[3:6] pull disable */
> + s5p_gpio_set_pull(&gpio2->k1, i, GPIO_PULL_NONE);
> + /* GPK1[3:6] drv 4x */
> + s5p_gpio_set_drv(&gpio2->k1, i, GPIO_DRV_4X);
> + }
> +
> + /*
> + * MMC device init
> + * mmc0 : eMMC (8-bit buswidth)
> + * mmc2 : SD card (4-bit buswidth)
> + */
> + err = s5p_mmc_init(0, 8);
> +
> + /* T-flash detect */
> + s5p_gpio_cfg_pin(&gpio2->x3, 3, 0xf);
ditto.
> + s5p_gpio_set_pull(&gpio2->x3, 3, GPIO_PULL_UP);
> +
> + /*
> + * Check the T-flash detect pin
> + * GPX3[3] T-flash detect pin
> + */
> + if (!s5p_gpio_get_value(&gpio2->x3, 3)) {
> + /*
> + * SD card GPIO:
> + * GPK2[0] SD_2_CLK(2)
> + * GPK2[1] SD_2_CMD(2)
> + * GPK2[2] SD_2_CDn -> Not used
> + * GPK2[3:6] SD_2_DATA[0:3](2)
> + */
> + for (i = 0; i < 7; i++) {
> + if (i == 2)
> + continue;
> + /* GPK2[0:6] special function 2 */
> + s5p_gpio_cfg_pin(&gpio2->k2, i, 0x2);
ditto.
> + /* GPK2[0:6] pull disable */
> + s5p_gpio_set_pull(&gpio2->k2, i, GPIO_PULL_NONE);
> + /* GPK2[0:6] drv 4x */
> + s5p_gpio_set_drv(&gpio2->k2, i, GPIO_DRV_4X);
> + }
> + err = s5p_mmc_init(2, 4);
> + }
> +
> + return err;
> +
> +}
> +#endif
Thanks.
Minkyu Kang.
More information about the U-Boot
mailing list