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https://github.com/AsahiLinux/u-boot
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1981539914
Tegra's MMC driver does DMA, and hence needs cache-aligned buffers. In some cases (e.g. user load commands) this cannot be guaranteed by callers of the MMC APIs. To solve this, modify the Tegra MMC driver to use the new bounce_buffer_*() APIs. Note: Ideally, all U-Boot code will always provide address- and size- aligned buffers, so a bounce buffer will only ever be needed for user- supplied buffers (e.g. load commands). Ensuring this removes the need for performance-sucking bounce buffer cache management and memcpy()s. The one known exception at present is the SCR buffer in sd_change_freq(), which is only 8 bytes long. Solving this requires enhancing struct mmc_data to know the difference between buffer size and transferred data size, or forcing all callers of mmc_send_cmd() to have allocated buffers using ALLOC_CACHE_ALIGN_BUFFER(), which while true in this case, is not enforced in any way at present, and so cannot be assumed by the core MMC code. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org> Signed-off-by: Andy Fleming <afleming@freescale.com>
208 lines
6.1 KiB
C
208 lines
6.1 KiB
C
/*
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* (C) Copyright 2010-2012
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* NVIDIA Corporation <www.nvidia.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#ifndef __TEGRA20_COMMON_H
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#define __TEGRA20_COMMON_H
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#include <asm/sizes.h>
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#include <linux/stringify.h>
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/*
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* High Level Configuration Options
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*/
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#define CONFIG_ARMCORTEXA9 /* This is an ARM V7 CPU core */
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#define CONFIG_TEGRA20 /* in a NVidia Tegra20 core */
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#define CONFIG_TEGRA /* which is a Tegra generic machine */
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#define CONFIG_SYS_L2CACHE_OFF /* No L2 cache */
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#define CONFIG_SYS_CACHELINE_SIZE 32
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#include <asm/arch/tegra.h> /* get chip and board defs */
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/*
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* Display CPU and Board information
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*/
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#define CONFIG_DISPLAY_CPUINFO
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#define CONFIG_DISPLAY_BOARDINFO
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#define CONFIG_CMDLINE_TAG /* enable passing of ATAGs */
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#define CONFIG_OF_LIBFDT /* enable passing of devicetree */
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#ifdef CONFIG_TEGRA_LP0
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#define TEGRA_LP0_ADDR 0x1C406000
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#define TEGRA_LP0_SIZE 0x2000
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#define TEGRA_LP0_VEC \
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"lp0_vec=" __stringify(TEGRA_LP0_SIZE) \
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"@" __stringify(TEGRA_LP0_ADDR) " "
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#else
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#define TEGRA_LP0_VEC
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#endif
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/* Environment */
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#define CONFIG_ENV_VARS_UBOOT_CONFIG
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#define CONFIG_ENV_SIZE 0x2000 /* Total Size Environment */
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/*
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* Size of malloc() pool
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*/
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#define CONFIG_SYS_MALLOC_LEN (4 << 20) /* 4MB */
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/*
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* PllX Configuration
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*/
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#define CONFIG_SYS_CPU_OSC_FREQUENCY 1000000 /* Set CPU clock to 1GHz */
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/*
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* NS16550 Configuration
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*/
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#define V_NS16550_CLK 216000000 /* 216MHz (pllp_out0) */
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#define CONFIG_SYS_NS16550
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#define CONFIG_SYS_NS16550_SERIAL
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#define CONFIG_SYS_NS16550_REG_SIZE (-4)
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#define CONFIG_SYS_NS16550_CLK V_NS16550_CLK
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/*
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* select serial console configuration
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*/
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#define CONFIG_CONS_INDEX 1
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/* allow to overwrite serial and ethaddr */
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#define CONFIG_ENV_OVERWRITE
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#define CONFIG_BAUDRATE 115200
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#define CONFIG_SYS_BAUDRATE_TABLE {4800, 9600, 19200, 38400, 57600,\
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115200}
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/*
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* This parameter affects a TXFILLTUNING field that controls how much data is
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* sent to the latency fifo before it is sent to the wire. Without this
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* parameter, the default (2) causes occasional Data Buffer Errors in OUT
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* packets depending on the buffer address and size.
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*/
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#define CONFIG_USB_EHCI_TXFIFO_THRESH 10
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#define CONFIG_EHCI_IS_TDI
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/* Total I2C ports on Tegra20 */
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#define TEGRA_I2C_NUM_CONTROLLERS 4
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/* include default commands */
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#include <config_cmd_default.h>
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#define CONFIG_PARTITION_UUIDS
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#define CONFIG_CMD_PART
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/* remove unused commands */
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#undef CONFIG_CMD_FLASH /* flinfo, erase, protect */
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#undef CONFIG_CMD_FPGA /* FPGA configuration support */
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#undef CONFIG_CMD_IMI
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#undef CONFIG_CMD_IMLS
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#undef CONFIG_CMD_NFS /* NFS support */
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#undef CONFIG_CMD_NET /* network support */
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/* turn on command-line edit/hist/auto */
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#define CONFIG_CMDLINE_EDITING
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#define CONFIG_COMMAND_HISTORY
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#define CONFIG_AUTO_COMPLETE
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#define CONFIG_SYS_NO_FLASH
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#define CONFIG_CONSOLE_MUX
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#define CONFIG_SYS_CONSOLE_IS_IN_ENV
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#define CONFIG_LOADADDR 0x408000 /* def. location for kernel */
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#define CONFIG_BOOTDELAY 2 /* -1 to disable auto boot */
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/*
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* Miscellaneous configurable options
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*/
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#define CONFIG_SYS_LONGHELP /* undef to save memory */
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#define CONFIG_SYS_HUSH_PARSER /* use "hush" command parser */
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#define CONFIG_SYS_PROMPT V_PROMPT
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/*
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* Increasing the size of the IO buffer as default nfsargs size is more
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* than 256 and so it is not possible to edit it
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*/
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#define CONFIG_SYS_CBSIZE (256 * 2) /* Console I/O Buffer Size */
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/* Print Buffer Size */
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#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
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sizeof(CONFIG_SYS_PROMPT) + 16)
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#define CONFIG_SYS_MAXARGS 16 /* max number of command args */
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/* Boot Argument Buffer Size */
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#define CONFIG_SYS_BARGSIZE (CONFIG_SYS_CBSIZE)
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#define CONFIG_SYS_MEMTEST_START (NV_PA_SDRC_CS0 + 0x600000)
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#define CONFIG_SYS_MEMTEST_END (CONFIG_SYS_MEMTEST_START + 0x100000)
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#define CONFIG_SYS_LOAD_ADDR (0xA00800) /* default */
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#define CONFIG_SYS_HZ 1000
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#define CONFIG_STACKBASE 0x2800000 /* 40MB */
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/*-----------------------------------------------------------------------
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* Physical Memory Map
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*/
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#define CONFIG_NR_DRAM_BANKS 1
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#define PHYS_SDRAM_1 NV_PA_SDRC_CS0
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#define PHYS_SDRAM_1_SIZE 0x20000000 /* 512M */
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#define CONFIG_SYS_TEXT_BASE 0x0010c000
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#define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE
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#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_1
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#define CONFIG_SYS_BOOTMAPSZ (256 << 20) /* 256M */
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#define CONFIG_SYS_INIT_RAM_ADDR CONFIG_STACKBASE
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#define CONFIG_SYS_INIT_RAM_SIZE CONFIG_SYS_MALLOC_LEN
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#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + \
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CONFIG_SYS_INIT_RAM_SIZE - \
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GENERATED_GBL_DATA_SIZE)
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#define CONFIG_TEGRA_GPIO
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#define CONFIG_CMD_GPIO
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#define CONFIG_CMD_ENTERRCM
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#define CONFIG_CMD_BOOTZ
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/* Defines for SPL */
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#define CONFIG_SPL
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#define CONFIG_SPL_FRAMEWORK
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#define CONFIG_SPL_RAM_DEVICE
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#define CONFIG_SPL_BOARD_INIT
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#define CONFIG_SPL_NAND_SIMPLE
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#define CONFIG_SPL_TEXT_BASE 0x00108000
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#define CONFIG_SPL_MAX_SIZE (CONFIG_SYS_TEXT_BASE - \
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CONFIG_SPL_TEXT_BASE)
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#define CONFIG_SYS_SPL_MALLOC_START 0x00090000
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#define CONFIG_SYS_SPL_MALLOC_SIZE 0x00010000
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#define CONFIG_SPL_STACK 0x000ffffc
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#define CONFIG_SPL_LIBCOMMON_SUPPORT
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#define CONFIG_SPL_LIBGENERIC_SUPPORT
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#define CONFIG_SPL_SERIAL_SUPPORT
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#define CONFIG_SPL_GPIO_SUPPORT
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#define CONFIG_SPL_LDSCRIPT "$(CPUDIR)/tegra20/u-boot-spl.lds"
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#define CONFIG_SYS_NAND_SELF_INIT
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#define CONFIG_SYS_NAND_ONFI_DETECTION
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/* Misc utility code */
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#define CONFIG_BOUNCE_BUFFER
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#endif /* __TEGRA20_COMMON_H */
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