fdt_addr_t end;
};
+struct bd_info;
+
#ifdef CONFIG_SPL_BUILD
#define SPL_BUILD 1
#else
#define SPL_BUILD 0
#endif
+#if CONFIG_IS_ENABLED(OF_PRIOR_STAGE)
+extern phys_addr_t prior_stage_fdt_address;
+#endif
+
/*
* Information about a resource. start is the first address of the resource
* and end is the last address (inclusive). The length of the resource will
/* Tegra210 XUSB pad controller */
COMPAT_SMSC_LAN9215, /* SMSC 10/100 Ethernet LAN9215 */
COMPAT_SAMSUNG_EXYNOS5_SROMC, /* Exynos5 SROMC */
- COMPAT_SAMSUNG_S3C2440_I2C, /* Exynos I2C Controller */
- COMPAT_SAMSUNG_EXYNOS5_SOUND, /* Exynos Sound */
- COMPAT_WOLFSON_WM8994_CODEC, /* Wolfson WM8994 Sound Codec */
COMPAT_SAMSUNG_EXYNOS_USB_PHY, /* Exynos phy controller for usb2.0 */
COMPAT_SAMSUNG_EXYNOS5_USB3_PHY,/* Exynos phy controller for usb3.0 */
COMPAT_SAMSUNG_EXYNOS_TMU, /* Exynos TMU */
COMPAT_SAMSUNG_EXYNOS_MIPI_DSI, /* Exynos mipi dsi */
COMPAT_SAMSUNG_EXYNOS_DWMMC, /* Exynos DWMMC controller */
- COMPAT_SAMSUNG_EXYNOS_MMC, /* Exynos MMC controller */
COMPAT_GENERIC_SPI_FLASH, /* Generic SPI Flash chip */
- COMPAT_MAXIM_98095_CODEC, /* MAX98095 Codec */
- COMPAT_SAMSUNG_EXYNOS5_I2C, /* Exynos5 High Speed I2C Controller */
COMPAT_SAMSUNG_EXYNOS_SYSMMU, /* Exynos sysmmu */
COMPAT_INTEL_MICROCODE, /* Intel microcode update */
- COMPAT_AMS_AS3722, /* AMS AS3722 PMIC */
COMPAT_INTEL_QRK_MRC, /* Intel Quark MRC */
COMPAT_ALTERA_SOCFPGA_DWMAC, /* SoCFPGA Ethernet controller */
COMPAT_ALTERA_SOCFPGA_DWMMC, /* SoCFPGA DWMMC controller */
int fdtdec_get_alias_seq(const void *blob, const char *base, int node,
int *seqp);
+/**
+ * Get the highest alias number for susbystem.
+ *
+ * It parses all aliases and find out highest recorded alias for subsystem.
+ * Aliases are of the form <base><num> where <num> is the sequence number.
+ *
+ * @param blob Device tree blob (if NULL, then error is returned)
+ * @param base Base name for alias susbystem (before the number)
+ *
+ * @return 0 highest alias ID, -1 if not found
+ */
+int fdtdec_get_alias_highest_id(const void *blob, const char *base);
+
/**
* Get a property from the /chosen node
*
const u8 *fdtdec_locate_byte_array(const void *blob, int node,
const char *prop_name, int count);
-/**
- * Look up a property in a node which contains a memory region address and
- * size. Then return a pointer to this address.
- *
- * The property must hold one address with a length. This is only tested on
- * 32-bit machines.
- *
- * @param blob FDT blob
- * @param node node to examine
- * @param prop_name name of property to find
- * @param basep Returns base address of region
- * @param size Returns size of region
- * @return 0 if ok, -1 on error (property not found)
- */
-int fdtdec_decode_region(const void *blob, int node, const char *prop_name,
- fdt_addr_t *basep, fdt_size_t *sizep);
-
/**
* Obtain an indexed resource from a device property.
*
const char *prop_names, const char *name,
struct fdt_resource *res);
-/**
- * Decode a named region within a memory bank of a given type.
- *
- * This function handles selection of a memory region. The region is
- * specified as an offset/size within a particular type of memory.
- *
- * The properties used are:
- *
- * <mem_type>-memory<suffix> for the name of the memory bank
- * <mem_type>-offset<suffix> for the offset in that bank
- *
- * The property value must have an offset and a size. The function checks
- * that the region is entirely within the memory bank.5
- *
- * @param blob FDT blob
- * @param node Node containing the properties (-1 for /config)
- * @param mem_type Type of memory to use, which is a name, such as
- * "u-boot" or "kernel".
- * @param suffix String to append to the memory/offset
- * property names
- * @param basep Returns base of region
- * @param sizep Returns size of region
- * @return 0 if OK, -ive on error
- */
-int fdtdec_decode_memory_region(const void *blob, int node,
- const char *mem_type, const char *suffix,
- fdt_addr_t *basep, fdt_size_t *sizep);
-
/* Display timings from linux include/video/display_timing.h */
enum display_flags {
DISPLAY_FLAGS_HSYNC_LOW = 1 << 0,
struct display_timing *config);
/**
- * fdtdec_setup_memory_size() - decode and setup gd->ram_size
+ * fdtdec_setup_mem_size_base_fdt() - decode and setup gd->ram_size and
+ * gd->ram_start
+ *
+ * Decode the /memory 'reg' property to determine the size and start of the
+ * first memory bank, populate the global data with the size and start of the
+ * first bank of memory.
+ *
+ * This function should be called from a boards dram_init(). This helper
+ * function allows for boards to query the device tree for DRAM size and start
+ * address instead of hard coding the value in the case where the memory size
+ * and start address cannot be detected automatically.
+ *
+ * @param blob FDT blob
+ *
+ * @return 0 if OK, -EINVAL if the /memory node or reg property is missing or
+ * invalid
+ */
+int fdtdec_setup_mem_size_base_fdt(const void *blob);
+
+/**
+ * fdtdec_setup_mem_size_base() - decode and setup gd->ram_size and
+ * gd->ram_start
*
- * Decode the /memory 'reg' property to determine the size of the first memory
- * bank, populate the global data with the size of the first bank of memory.
+ * Decode the /memory 'reg' property to determine the size and start of the
+ * first memory bank, populate the global data with the size and start of the
+ * first bank of memory.
*
* This function should be called from a boards dram_init(). This helper
- * function allows for boards to query the device tree for DRAM size instead of
- * hard coding the value in the case where the memory size cannot be detected
- * automatically.
+ * function allows for boards to query the device tree for DRAM size and start
+ * address instead of hard coding the value in the case where the memory size
+ * and start address cannot be detected automatically.
+ *
+ * @return 0 if OK, -EINVAL if the /memory node or reg property is missing or
+ * invalid
+ */
+int fdtdec_setup_mem_size_base(void);
+
+/**
+ * fdtdec_setup_memory_banksize_fdt() - decode and populate gd->bd->bi_dram
+ *
+ * Decode the /memory 'reg' property to determine the address and size of the
+ * memory banks. Use this data to populate the global data board info with the
+ * phys address and size of memory banks.
+ *
+ * This function should be called from a boards dram_init_banksize(). This
+ * helper function allows for boards to query the device tree for memory bank
+ * information instead of hard coding the information in cases where it cannot
+ * be detected automatically.
+ *
+ * @param blob FDT blob
*
* @return 0 if OK, -EINVAL if the /memory node or reg property is missing or
* invalid
*/
-int fdtdec_setup_memory_size(void);
+int fdtdec_setup_memory_banksize_fdt(const void *blob);
/**
* fdtdec_setup_memory_banksize() - decode and populate gd->bd->bi_dram
*/
int fdtdec_setup(void);
+#if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
+/**
+ * fdtdec_resetup() - Set up the device tree again
+ *
+ * The main difference with fdtdec_setup() is that it returns if the fdt has
+ * changed because a better match has been found.
+ * This is typically used for boards that rely on a DM driver to detect the
+ * board type. This function sould be called by the board code after the stuff
+ * needed by board_fit_config_name_match() to operate porperly is available.
+ * If this functions signals that a rescan is necessary, the board code must
+ * unbind all the drivers using dm_uninit() and then rescan the DT with
+ * dm_init_and_scan().
+ *
+ * @param rescan Returns a flag indicating that fdt has changed and rescanning
+ * the fdt is required
+ *
+ * @return 0 if OK, -ve on error
+ */
+int fdtdec_resetup(int *rescan);
+#endif
+
/**
* Board-specific FDT initialization. Returns the address to a device tree blob.
* Called when CONFIG_OF_BOARD is defined, or if CONFIG_OF_SEPARATE is defined
*/
void *board_fdt_blob_setup(void);
+/*
+ * Decode the size of memory
+ *
+ * RAM size is normally set in a /memory node and consists of a list of
+ * (base, size) cells in the 'reg' property. This information is used to
+ * determine the total available memory as well as the address and size
+ * of each bank.
+ *
+ * Optionally the memory configuration can vary depending on a board id,
+ * typically read from strapping resistors or an EEPROM on the board.
+ *
+ * Finally, memory size can be detected (within certain limits) by probing
+ * the available memory. It is safe to do so within the limits provides by
+ * the board's device tree information. This makes it possible to produce
+ * boards with different memory sizes, where the device tree specifies the
+ * maximum memory configuration, and the smaller memory configuration is
+ * probed.
+ *
+ * This function decodes that information, returning the memory base address,
+ * size and bank information. See the memory.txt binding for full
+ * documentation.
+ *
+ * @param blob Device tree blob
+ * @param area Name of node to check (NULL means "/memory")
+ * @param board_id Board ID to look up
+ * @param basep Returns base address of first memory bank (NULL to
+ * ignore)
+ * @param sizep Returns total memory size (NULL to ignore)
+ * @param bd Updated with the memory bank information (NULL to skip)
+ * @return 0 if OK, -ve on error
+ */
+int fdtdec_decode_ram_size(const void *blob, const char *area, int board_id,
+ phys_addr_t *basep, phys_size_t *sizep,
+ struct bd_info *bd);
+
#endif
projects / oweals / u-boot.git / blobdiff