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Mon, 21 Jan 2013 20:29:43 +0900 (KST) Received: from chrome-ubuntu.sisodomain.com ([107.108.73.106]) by mmp2.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0MGZ0092C3L1A540@mmp2.samsung.com> for u-boot@lists.denx.de; Mon, 21 Jan 2013 20:29:42 +0900 (KST) From: Amar To: u-boot@lists.denx.de, jh80.chung@samsung.com Date: Mon, 21 Jan 2013 06:43:56 -0500 Message-id: <1358768638-14187-9-git-send-email-amarendra.xt@samsung.com> X-Mailer: git-send-email 1.8.0 In-reply-to: <1358768638-14187-1-git-send-email-amarendra.xt@samsung.com> References: <1358768638-14187-1-git-send-email-amarendra.xt@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrELMWRmVeSWpSXmKPExsWyRsSkVne52t8Ag/v/hS3e7u1kd2D0OHtn B2MAYxSXTUpqTmZZapG+XQJXxoqjJxkL3mpVTF7wgrmBcb5yFyMnh4SAicTBo4uZIWwxiQv3 1rN1MXJxCAksZZRof7aZGabo9Ll17BCJ6YwSH54tYIRwljFJTP63CCjDwcEmoCrxa7E9SIOI gIHE9CfbWUFsZoEaicnzbzGB2MIC5hJ71x9hBLFZgMrn/37IAtLKK+AhMftRKMQuOYkPex6x g9icAp4S+//uARsjBFSya8F/VpC1EgKX2SS2rz3FDDFHQOLb5ENgcyQEZCU2HYC6WVLi4Iob LBMYhRcwMqxiFE0tSC4oTkrPNdIrTswtLs1L10vOz93ECAzB0/+eSe9gXNVgcYhRgINRiYc3 oe9PgBBrYllxZe4hRgkOZiUR3p8zgEK8KYmVValF+fFFpTmpxYcYk4GWT2SWEk3OB8ZHXkm8 obGJuamxqaWRkZmpKWnCSuK8jKeeBAgJpCeWpGanphakFsFsYeLglGpgnCJ/dqHr9U9xubck ShdpPzjhdquib6kxe2umcPiht3z80cwT3wvfCIt+6ciyouccZ2WZWInMBZt5ilPUOXg+zvO7 822yn8yqC+zOUzTnfpMM5z53i8V+RUVdqPwJhsjS56emVJx+n/2Va9WHOQteaDeUnzp/7MvC +VaMKdwzdvncmb9U+4fOVCWW4oxEQy3mouJEAI5tzcOFAgAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrIIsWRmVeSWpSXmKPExsVy+t9jQd3lan8DDF6eZLJ4u7eT3YHR4+yd HYwBjFENjDYZqYkpqUUKqXnJ+SmZeem2St7B8c7xpmYGhrqGlhbmSgp5ibmptkouPgG6bpk5 QGOVFMoSc0qBQgGJxcVK+naYJoSGuOlawDRG6PqGBMH1GBmggYQ1jBkrjp5kLHirVTF5wQvm Bsb5yl2MnBwSAiYSp8+tY4ewxSQu3FvP1sXIxSEkMJ1R4sOzBYwQzjImicn/FgFVcXCwCahK /FpsD9IgImAgMf3JdlYQm1mgRmLy/FtMILawgLnE3vVHGEFsFqDy+b8fsoC08gp4SMx+FAqx S07iw55HYHs5BTwl9v/dAzZGCKhk14L/rBMYeRcwMqxiFE0tSC4oTkrPNdIrTswtLs1L10vO z93ECA7wZ9I7GFc1WBxiFOBgVOLhTej7EyDEmlhWXJl7iFGCg1lJhPfnDKAQb0piZVVqUX58 UWlOavEhxmSgoyYyS4km5wOjL68k3tDYxNzU2NTSxMLEzJI0YSVxXsZTTwKEBNITS1KzU1ML UotgtjBxcEo1MDLp3OXddqik7e1XpfyAad9NjUI4bslPctyiltLvs6YyVbb5w/fn7KJhTGtP nPv0NzEm9riQ7ePSyZG2f+Ne9PyvPpay0HRyYq0d/3e+g09r0l3EhZx31Z77L7ZiS8GWTbFM 9aI7TCQOVLJE9V4o1XPYmjf358v2p7oHtMpmuKjKtMpvXSc/T4mlOCPRUIu5qDgRAI24eNG0 AgAA DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Cc: patches@linaro.org, afleming@gmail.com, hs@denx.de Subject: [U-Boot] [PATCH V5 08/10] SMDK5250: Enable EMMC booting X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.11 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: u-boot-bounces@lists.denx.de Errors-To: u-boot-bounces@lists.denx.de This patch adds support for EMMC booting on SMDK5250. Signed-off-by: Amar Acked-by: Simon Glass --- Changes since V1: 1)Updated spl_boot.c file to maintain irom pointer table instead of using the #define values defined in header file. Changes since V2: 1)Updation of commit message and resubmition of proper patch set. Changes since V3: No change. Changes since V4: 1)The function get_irom_func(int index) has been added to avoid type casting at many places. 2)The changes to file arch/arm/include/asm/arch-exynos/clk.h are included in this patch file. arch/arm/include/asm/arch-exynos/clk.h | 3 ++ board/samsung/smdk5250/clock_init.c | 15 ++++++++++ board/samsung/smdk5250/clock_init.h | 5 ++++ board/samsung/smdk5250/spl_boot.c | 52 ++++++++++++++++++++++++++++++---- 4 files changed, 69 insertions(+), 6 deletions(-) diff --git a/arch/arm/include/asm/arch-exynos/clk.h b/arch/arm/include/asm/arch-exynos/clk.h index 1935b0b..a4d5b4e 100644 --- a/arch/arm/include/asm/arch-exynos/clk.h +++ b/arch/arm/include/asm/arch-exynos/clk.h @@ -29,6 +29,9 @@ #define VPLL 4 #define BPLL 5 +#define FSYS1_MMC0_DIV_MASK 0xff0f +#define FSYS1_MMC0_DIV_VAL 0x0701 + unsigned long get_pll_clk(int pllreg); unsigned long get_arm_clk(void); unsigned long get_i2c_clk(void); diff --git a/board/samsung/smdk5250/clock_init.c b/board/samsung/smdk5250/clock_init.c index c009ae5..154993c 100644 --- a/board/samsung/smdk5250/clock_init.c +++ b/board/samsung/smdk5250/clock_init.c @@ -28,6 +28,7 @@ #include #include #include +#include #include "clock_init.h" #include "setup.h" @@ -664,3 +665,17 @@ void clock_init_dp_clock(void) /* We run DP at 267 Mhz */ setbits_le32(&clk->div_disp1_0, CLK_DIV_DISP1_0_FIMD1); } + +/* + * Set clock divisor value for booting from EMMC. + * Set DWMMC channel-0 clk div to operate mmc0 device at 50MHz. + */ +void emmc_boot_clk_div_set(void) +{ + struct exynos5_clock *clk = (struct exynos5_clock *)EXYNOS5_CLOCK_BASE; + unsigned int div_mmc; + + div_mmc = readl((unsigned int) &clk->div_fsys1) & ~FSYS1_MMC0_DIV_MASK; + div_mmc |= FSYS1_MMC0_DIV_VAL; + writel(div_mmc, (unsigned int) &clk->div_fsys1); +} diff --git a/board/samsung/smdk5250/clock_init.h b/board/samsung/smdk5250/clock_init.h index f751bcb..20a1d47 100644 --- a/board/samsung/smdk5250/clock_init.h +++ b/board/samsung/smdk5250/clock_init.h @@ -146,4 +146,9 @@ struct mem_timings *clock_get_mem_timings(void); * Initialize clock for the device */ void system_clock_init(void); + +/* + * Set clock divisor value for booting from EMMC. + */ +void emmc_boot_clk_div_set(void); #endif diff --git a/board/samsung/smdk5250/spl_boot.c b/board/samsung/smdk5250/spl_boot.c index d8f3c1e..4ddbd4a 100644 --- a/board/samsung/smdk5250/spl_boot.c +++ b/board/samsung/smdk5250/spl_boot.c @@ -23,15 +23,42 @@ #include #include +#include +#include +#include + +#include "clock_init.h" + +/* Index into irom ptr table */ +enum index { + MMC_INDEX, + EMMC44_INDEX, + EMMC44_END_INDEX, + SPI_INDEX, +}; + +/* IROM Function Pointers Table */ +u32 irom_ptr_table[] = { + [MMC_INDEX] = 0x02020030, /* iROM Function Pointer-SDMMC boot */ + [EMMC44_INDEX] = 0x02020044, /* iROM Function Pointer-EMMC4.4 boot*/ + [EMMC44_END_INDEX] = 0x02020048,/* iROM Function Pointer + -EMMC4.4 end boot operation */ + [SPI_INDEX] = 0x02020058, /* iROM Function Pointer-SPI boot */ + }; + enum boot_mode { BOOT_MODE_MMC = 4, BOOT_MODE_SERIAL = 20, + BOOT_MODE_EMMC = 8, /* EMMC4.4 */ /* Boot based on Operating Mode pin settings */ BOOT_MODE_OM = 32, BOOT_MODE_USB, /* Boot using USB download */ }; - typedef u32 (*spi_copy_func_t)(u32 offset, u32 nblock, u32 dst); +void *get_irom_func(int index) +{ + return (void *) *(u32 *)irom_ptr_table[index]; +} /* * Copy U-boot from mmc to RAM: @@ -40,23 +67,36 @@ enum boot_mode { */ void copy_uboot_to_ram(void) { - spi_copy_func_t spi_copy; enum boot_mode bootmode; - u32 (*copy_bl2)(u32, u32, u32); - + u32 (*spi_copy)(u32 offset, u32 nblock, u32 dst); + u32 (*copy_bl2)(u32 offset, u32 nblock, u32 dst); + u32 (*copy_bl2_from_emmc)(u32 nblock, u32 dst); + void (*end_bootop_from_emmc)(void); + /* read Operation Mode ststus register to find the bootmode */ bootmode = readl(EXYNOS5_POWER_BASE) & OM_STAT; switch (bootmode) { case BOOT_MODE_SERIAL: - spi_copy = *(spi_copy_func_t *)EXYNOS_COPY_SPI_FNPTR_ADDR; + spi_copy = get_irom_func(SPI_INDEX); spi_copy(SPI_FLASH_UBOOT_POS, CONFIG_BL2_SIZE, CONFIG_SYS_TEXT_BASE); break; case BOOT_MODE_MMC: - copy_bl2 = (void *) *(u32 *)COPY_BL2_FNPTR_ADDR; + copy_bl2 = get_irom_func(MMC_INDEX); copy_bl2(BL2_START_OFFSET, BL2_SIZE_BLOC_COUNT, CONFIG_SYS_TEXT_BASE); break; + case BOOT_MODE_EMMC: + /* Set the FSYS1 clock divisor value for EMMC boot */ + emmc_boot_clk_div_set(); + + copy_bl2_from_emmc = get_irom_func(EMMC44_INDEX); + end_bootop_from_emmc = get_irom_func(EMMC44_END_INDEX); + + copy_bl2_from_emmc(BL2_SIZE_BLOC_COUNT, CONFIG_SYS_TEXT_BASE); + end_bootop_from_emmc(); + break; + default: break; }