diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/cpu.h | 35 | ||||
| -rw-r--r-- | include/dm/of_access.h | 16 | ||||
| -rw-r--r-- | include/dm/ofnode.h | 14 | ||||
| -rw-r--r-- | include/dm/uclass.h | 1 | ||||
| -rw-r--r-- | include/dt-bindings/clk/mpc83xx-clk.h | 33 | ||||
| -rw-r--r-- | include/dt-bindings/memory/mpc83xx-sdram.h | 161 | ||||
| -rw-r--r-- | include/init.h | 34 | ||||
| -rw-r--r-- | include/linux/bitrev.h | 102 | ||||
| -rw-r--r-- | include/mpc83xx.h | 6 | ||||
| -rw-r--r-- | include/sysreset.h | 17 |
10 files changed, 384 insertions, 35 deletions
diff --git a/include/cpu.h b/include/cpu.h index 5cc7c5abd7..367c5f46a0 100644 --- a/include/cpu.h +++ b/include/cpu.h @@ -9,19 +9,21 @@ /** * struct cpu_platdata - platform data for a CPU + * @cpu_id: Platform-specific way of identifying the CPU. + * @ucode_version: Microcode version, if CPU_FEAT_UCODE is set + * @device_id: Driver-defined device identifier + * @family: DMTF CPU Family identifier + * @id: DMTF CPU Processor identifier * * This can be accessed with dev_get_parent_platdata() for any UCLASS_CPU * device. - * - * @cpu_id: Platform-specific way of identifying the CPU. - * @ucode_version: Microcode version, if CPU_FEAT_UCODE is set */ struct cpu_platdata { int cpu_id; int ucode_version; ulong device_id; - u16 family; /* DMTF CPU Family */ - u32 id[2]; /* DMTF CPU Processor IDs */ + u16 family; + u32 id[2]; }; /* CPU features - mostly just a placeholder for now */ @@ -88,39 +90,46 @@ struct cpu_ops { /** * cpu_get_desc() - Get a description string for a CPU - * * @dev: Device to check (UCLASS_CPU) * @buf: Buffer to place string * @size: Size of string space - * @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error + * + * Return: 0 if OK, -ENOSPC if buffer is too small, other -ve on error */ int cpu_get_desc(struct udevice *dev, char *buf, int size); /** * cpu_get_info() - Get information about a CPU - * * @dev: Device to check (UCLASS_CPU) * @info: Returns CPU info - * @return 0 if OK, -ve on error + * + * Return: 0 if OK, -ve on error */ int cpu_get_info(struct udevice *dev, struct cpu_info *info); /** * cpu_get_count() - Get number of CPUs - * * @dev: Device to check (UCLASS_CPU) - * @return CPU count if OK, -ve on error + * + * Return: CPU count if OK, -ve on error */ int cpu_get_count(struct udevice *dev); /** * cpu_get_vendor() - Get vendor name of a CPU - * * @dev: Device to check (UCLASS_CPU) * @buf: Buffer to place string * @size: Size of string space - * @return 0 if OK, -ENOSPC if buffer is too small, other -ve on error + * + * Return: 0 if OK, -ENOSPC if buffer is too small, other -ve on error */ int cpu_get_vendor(struct udevice *dev, char *buf, int size); +/** + * cpu_probe_all() - Probe all available CPUs + * + * Return: 0 if OK, -ve on error + */ +int cpu_probe_all(void); + #endif diff --git a/include/dm/of_access.h b/include/dm/of_access.h index dd1abb8e97..5ed1a0cdb4 100644 --- a/include/dm/of_access.h +++ b/include/dm/of_access.h @@ -194,6 +194,22 @@ struct device_node *of_find_compatible_node(struct device_node *from, const char *type, const char *compatible); /** + * of_find_node_by_prop_value() - find a node with a given property value + * + * Find a node based on a property value. + * @from: Node to start searching from or NULL. the node you pass will not be + * searched, only the next one will; typically, you pass what the previous + * call returned. + * @propname: property name to check + * @propval: property value to search for + * @proplen: length of the value in propval + * @return node pointer or NULL if not found + */ +struct device_node *of_find_node_by_prop_value(struct device_node *from, + const char *propname, + const void *propval, + int proplen); +/** * of_find_node_by_phandle() - Find a node given a phandle * * @handle: phandle of the node to find diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h index ab36b74c4c..c06d77849c 100644 --- a/include/dm/ofnode.h +++ b/include/dm/ofnode.h @@ -703,6 +703,20 @@ int ofnode_read_resource_byname(ofnode node, const char *name, ofnode ofnode_by_compatible(ofnode from, const char *compat); /** + * ofnode_by_prop_value() - Find the next node with given property value + * + * Find the next node after @from that has a @propname with a value + * @propval and a length @proplen. + * + * @from: ofnode to start from (use ofnode_null() to start at the + * beginning) @propname: property name to check @propval: property value to + * search for @proplen: length of the value in propval @return ofnode + * found, or ofnode_null() if none + */ +ofnode ofnode_by_prop_value(ofnode from, const char *propname, + const void *propval, int proplen); + +/** * ofnode_for_each_subnode() - iterate over all subnodes of a parent * * @node: child node (ofnode, lvalue) diff --git a/include/dm/uclass.h b/include/dm/uclass.h index 0e882cec59..6e7c1cd3e8 100644 --- a/include/dm/uclass.h +++ b/include/dm/uclass.h @@ -58,6 +58,7 @@ struct udevice; * @post_probe: Called after a new device is probed * @pre_remove: Called before a device is removed * @child_post_bind: Called after a child is bound to a device in this uclass + * @child_pre_probe: Called before a child is probed in this uclass * @init: Called to set up the uclass * @destroy: Called to destroy the uclass * @priv_auto_alloc_size: If non-zero this is the size of the private data diff --git a/include/dt-bindings/clk/mpc83xx-clk.h b/include/dt-bindings/clk/mpc83xx-clk.h new file mode 100644 index 0000000000..db4ea15cf4 --- /dev/null +++ b/include/dt-bindings/clk/mpc83xx-clk.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * (C) Copyright 2018 + * Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc + */ + +#ifndef DT_BINDINGS_MPC83XX_CLK_H +#define DT_BINDINGS_MPC83XX_CLK_H +#define MPC83XX_CLK_CORE 0 +#define MPC83XX_CLK_CSB 1 +#define MPC83XX_CLK_QE 2 +#define MPC83XX_CLK_BRG 3 +#define MPC83XX_CLK_LBIU 4 +#define MPC83XX_CLK_LCLK 5 +#define MPC83XX_CLK_MEM 6 +#define MPC83XX_CLK_MEM_SEC 7 +#define MPC83XX_CLK_ENC 8 +#define MPC83XX_CLK_I2C1 9 +#define MPC83XX_CLK_I2C2 10 +#define MPC83XX_CLK_TDM 11 +#define MPC83XX_CLK_SDHC 12 +#define MPC83XX_CLK_TSEC1 13 +#define MPC83XX_CLK_TSEC2 14 +#define MPC83XX_CLK_USBDR 15 +#define MPC83XX_CLK_USBMPH 16 +#define MPC83XX_CLK_PCIEXP1 17 +#define MPC83XX_CLK_PCIEXP2 18 +#define MPC83XX_CLK_SATA 19 +#define MPC83XX_CLK_DMAC 20 +#define MPC83XX_CLK_PCI 21 +/* Count */ +#define MPC83XX_CLK_COUNT 22 +#endif /* DT_BINDINGS_MPC83XX_CLK_H */ diff --git a/include/dt-bindings/memory/mpc83xx-sdram.h b/include/dt-bindings/memory/mpc83xx-sdram.h new file mode 100644 index 0000000000..7d4ce01cc4 --- /dev/null +++ b/include/dt-bindings/memory/mpc83xx-sdram.h @@ -0,0 +1,161 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * (C) Copyright 2018 + * Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc + */ + +#ifndef DT_BINDINGS_MPC83XX_SDRAM_H +#define DT_BINDINGS_MPC83XX_SDRAM_H + +/* DDR Control Driver register */ + +#define DSO_DISABLE 0 +#define DSO_ENABLE 1 + +#define DSO_P_IMPEDANCE_HIGHEST_Z 0x0 +#define DSO_P_IMPEDANCE_MUCH_HIGHER_Z 0x8 +#define DSO_P_IMPEDANCE_HIGHER_Z 0xC +#define DSO_P_IMPEDANCE_NOMINAL 0xE +#define DSO_P_IMPEDANCE_LOWER_Z 0xF + +#define DSO_N_IMPEDANCE_HIGHEST_Z 0x0 +#define DSO_N_IMPEDANCE_MUCH_HIGHER_Z 0x8 +#define DSO_N_IMPEDANCE_HIGHER_Z 0xC +#define DSO_N_IMPEDANCE_NOMINAL 0xE +#define DSO_N_IMPEDANCE_LOWER_Z 0xF + +#define ODT_TERMINATION_75_OHM 0 +#define ODT_TERMINATION_150_OHM 1 + +#define DDR_TYPE_DDR2_1_8_VOLT 0 +#define DDR_TYPE_DDR1_2_5_VOLT 1 + +#define MVREF_SEL_EXTERNAL 0 +#define MVREF_SEL_INTERNAL_GVDD 1 + +#define M_ODR_ENABLE 0 +#define M_ODR_DISABLE 1 + +/* CS config register */ + +#define AUTO_PRECHARGE_ENABLE 0x00800000 +#define AUTO_PRECHARGE_DISABLE 0x00000000 + +#define ODT_RD_NEVER 0x00000000 +#define ODT_RD_ONLY_CURRENT 0x00100000 +#define ODT_RD_ONLY_OTHER_CS 0x00200000 +#define ODT_RD_ONLY_OTHER_DIMM 0x00300000 +#define ODT_RD_ALL 0x00400000 + +#define ODT_WR_NEVER 0x00000000 +#define ODT_WR_ONLY_CURRENT 0x00010000 +#define ODT_WR_ONLY_OTHER_CS 0x00020000 +#define ODT_WR_ONLY_OTHER_DIMM 0x00030000 +#define ODT_WR_ALL 0x00040000 + +/* DDR SDRAM Clock Control register */ + +#define CLOCK_ADJUST_025 0x01000000 +#define CLOCK_ADJUST_05 0x02000000 +#define CLOCK_ADJUST_075 0x03000000 +#define CLOCK_ADJUST_1 0x04000000 + +#define CASLAT_20 0x3 /* CAS latency = 2.0 */ +#define CASLAT_25 0x4 /* CAS latency = 2.5 */ +#define CASLAT_30 0x5 /* CAS latency = 3.0 */ +#define CASLAT_35 0x6 /* CAS latency = 3.5 */ +#define CASLAT_40 0x7 /* CAS latency = 4.0 */ +#define CASLAT_45 0x8 /* CAS latency = 4.5 */ +#define CASLAT_50 0x9 /* CAS latency = 5.0 */ +#define CASLAT_55 0xa /* CAS latency = 5.5 */ +#define CASLAT_60 0xb /* CAS latency = 6.0 */ +#define CASLAT_65 0xc /* CAS latency = 6.5 */ +#define CASLAT_70 0xd /* CAS latency = 7.0 */ +#define CASLAT_75 0xe /* CAS latency = 7.5 */ +#define CASLAT_80 0xf /* CAS latency = 8.0 */ + +/* DDR SDRAM Timing Configuration 2 register */ + +#define READ_LAT_PLUS_1 0x0 +#define READ_LAT 0x2 +#define READ_LAT_PLUS_1_4 0x3 +#define READ_LAT_PLUS_1_2 0x4 +#define READ_LAT_PLUS_3_4 0x5 +#define READ_LAT_PLUS_5_4 0x7 +#define READ_LAT_PLUS_3_2 0x8 +#define READ_LAT_PLUS_7_4 0x9 +#define READ_LAT_PLUS_2 0xA +#define READ_LAT_PLUS_9_4 0xB +#define READ_LAT_PLUS_5_2 0xC +#define READ_LAT_PLUS_11_4 0xD +#define READ_LAT_PLUS_3 0xE +#define READ_LAT_PLUS_13_4 0xF +#define READ_LAT_PLUS_7_2 0x10 +#define READ_LAT_PLUS_15_4 0x11 +#define READ_LAT_PLUS_4 0x12 +#define READ_LAT_PLUS_17_4 0x13 +#define READ_LAT_PLUS_9_2 0x14 +#define READ_LAT_PLUS_19_4 0x15 + +#define CLOCK_DELAY_0 0x0 +#define CLOCK_DELAY_1_4 0x1 +#define CLOCK_DELAY_1_2 0x2 +#define CLOCK_DELAY_3_4 0x3 +#define CLOCK_DELAY_1 0x4 +#define CLOCK_DELAY_5_4 0x5 +#define CLOCK_DELAY_3_2 0x6 + +/* DDR SDRAM Control Configuration */ + +#define SREN_DISABLE 0x0 +#define SREN_ENABLE 0x1 + +#define ECC_DISABLE 0x0 +#define ECC_ENABLE 0x1 + +#define RD_DISABLE 0x0 +#define RD_ENABLE 0x1 + +#define TYPE_DDR1 0x2 +#define TYPE_DDR2 0x3 + +#define DYN_PWR_DISABLE 0x0 +#define DYN_PWR_ENABLE 0x1 + +#define DATA_BUS_WIDTH_16 0x1 +#define DATA_BUS_WIDTH_32 0x2 + +#define NCAP_DISABLE 0x0 +#define NCAP_ENABLE 0x1 + +#define TIMING_1T 0x0 +#define TIMING_2T 0x1 + +#define INTERLEAVE_NONE 0x0 +#define INTERLEAVE_1_AND_2 0x1 + +#define PRECHARGE_MA_10 0x0 +#define PRECHARGE_MA_8 0x1 + +#define STRENGTH_FULL 0x0 +#define STRENGTH_HALF 0x1 + +#define INITIALIZATION_DONT_BYPASS 0x0 +#define INITIALIZATION_BYPASS 0x1 + +/* DDR SDRAM Control Configuration 2 register */ + +#define MODE_NORMAL 0x0 +#define MODE_REFRESH 0x1 + +#define DLL_RESET_ENABLE 0x0 +#define DLL_RESET_DISABLE 0x1 + +#define DQS_TRUE 0x0 + +#define ODT_ASSERT_NEVER 0x0 +#define ODT_ASSERT_WRITES 0x1 +#define ODT_ASSERT_READS 0x2 +#define ODT_ASSERT_ALWAYS 0x3 + +#endif diff --git a/include/init.h b/include/init.h index f114a88963..afc953d51e 100644 --- a/include/init.h +++ b/include/init.h @@ -27,7 +27,7 @@ void board_init_f(ulong dummy); * board_f.c for where it is called. If this is not provided, a default * version (which does nothing) will be used. * - * @return: 0 on success, otherwise error + * Return: 0 on success, otherwise error */ int arch_cpu_init(void); @@ -38,7 +38,7 @@ int arch_cpu_init(void); * relocation. This is similar to arch_cpu_init() but is able to reference * devices * - * @return 0 if OK, -ve on error + * Return: 0 if OK, -ve on error */ int arch_cpu_init_dm(void); @@ -50,7 +50,7 @@ int arch_cpu_init_dm(void); * board_f.c for where it is called. If this is not provided, a default * version (which does nothing) will be used. * - * @return: 0 on success, otherwise error + * Return: 0 on success, otherwise error */ int mach_cpu_init(void); @@ -60,6 +60,8 @@ int mach_cpu_init(void); * Where U-Boot relies on binary blobs to handle part of the system init, this * function can be used to set up the blobs. This is used on some Intel * platforms. + * + * Return: 0 */ int arch_fsp_init(void); @@ -78,12 +80,12 @@ int dram_init(void); * CONFIG_SYS_SDRAM_BASE and the size will be determined by a call to * get_effective_memsize(). * - * @return 0 if OK, -ve on error + * Return: 0 if OK, -ve on error */ int dram_init_banksize(void); /** - * Reserve all necessary stacks + * arch_reserve_stacks() - Reserve all necessary stacks * * This is used in generic board init sequence in common/board_f.c. Each * architecture could provide this function to tailor the required stacks. @@ -96,21 +98,29 @@ int dram_init_banksize(void); * positions of the stack. The stack pointer(s) will be set to this later. * gd->irq_sp is only required, if the architecture needs it. * - * @return 0 if no error + * Return: 0 if no error */ int arch_reserve_stacks(void); /** * init_cache_f_r() - Turn on the cache in preparation for relocation * - * @return 0 if OK, -ve on error + * Return: 0 if OK, -ve on error */ int init_cache_f_r(void); +#if !CONFIG_IS_ENABLED(CPU) +/** + * print_cpuinfo() - Display information about the CPU + * + * Return: 0 if OK, -ve on error + */ int print_cpuinfo(void); +#endif int timer_init(void); int reserve_mmu(void); int misc_init_f(void); + #if defined(CONFIG_DTB_RESELECT) int embedded_dtb_select(void); #endif @@ -120,28 +130,28 @@ extern ulong monitor_flash_len; /** * ulong board_init_f_alloc_reserve - allocate reserved area + * @top: top of the reserve area, growing down. * * This function is called by each architecture very early in the start-up * code to allow the C runtime to reserve space on the stack for writable * 'globals' such as GD and the malloc arena. * - * @top: top of the reserve area, growing down. - * @return: bottom of reserved area + * Return: bottom of reserved area */ ulong board_init_f_alloc_reserve(ulong top); /** * board_init_f_init_reserve - initialize the reserved area(s) + * @base: top from which reservation was done * * This function is called once the C runtime has allocated the reserved * area on the stack. It must initialize the GD at the base of that area. - * - * @base: top from which reservation was done */ void board_init_f_init_reserve(ulong base); /** * arch_setup_gd() - Set up the global_data pointer + * @gd_ptr: Pointer to global data * * This pointer is special in some architectures and cannot easily be assigned * to. For example on x86 it is implemented by adding a specific record to its @@ -149,8 +159,6 @@ void board_init_f_init_reserve(ulong base); * For most architectures this can simply be: * * gd = gd_ptr; - * - * @gd_ptr: Pointer to global data */ void arch_setup_gd(gd_t *gd_ptr); diff --git a/include/linux/bitrev.h b/include/linux/bitrev.h index cc5abd7396..8ec9411aad 100644 --- a/include/linux/bitrev.h +++ b/include/linux/bitrev.h @@ -1,21 +1,105 @@ -/* SPDX-License-Identifier: GPL-2.0+ */ -/* - * Based on bitrev from the Linux kernel, by Akinobu Mita - */ - +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_BITREV_H #define _LINUX_BITREV_H #include <linux/types.h> -extern u8 const byte_rev_table[256]; +#ifdef CONFIG_HAVE_ARCH_BITREVERSE +#include <asm/bitrev.h> + +#define __bitrev32 __arch_bitrev32 +#define __bitrev16 __arch_bitrev16 +#define __bitrev8 __arch_bitrev8 -static inline u8 bitrev8(u8 byte) +#else +extern u8 const byte_rev_table[256]; +static inline u8 __bitrev8(u8 byte) { return byte_rev_table[byte]; } -u16 bitrev16(u16 in); -u32 bitrev32(u32 in); +static inline u16 __bitrev16(u16 x) +{ + return (__bitrev8(x & 0xff) << 8) | __bitrev8(x >> 8); +} + +static inline u32 __bitrev32(u32 x) +{ + return (__bitrev16(x & 0xffff) << 16) | __bitrev16(x >> 16); +} + +#endif /* CONFIG_HAVE_ARCH_BITREVERSE */ + +#define __bitrev8x4(x) (__bitrev32(swab32(x))) + +#define __constant_bitrev32(x) \ +({ \ + u32 __x = x; \ + __x = (__x >> 16) | (__x << 16);\ + __x = ((__x & (u32)0xFF00FF00UL) >> 8) | ((__x & (u32)0x00FF00FFUL) << 8); \ + __x = ((__x & (u32)0xF0F0F0F0UL) >> 4) | ((__x & (u32)0x0F0F0F0FUL) << 4); \ + __x = ((__x & (u32)0xCCCCCCCCUL) >> 2) | ((__x & (u32)0x33333333UL) << 2); \ + __x = ((__x & (u32)0xAAAAAAAAUL) >> 1) | ((__x & (u32)0x55555555UL) << 1); \ + __x; \ +}) + +#define __constant_bitrev16(x) \ +({ \ + u16 __x = x; \ + __x = (__x >> 8) | (__x << 8); \ + __x = ((__x & (u16)0xF0F0U) >> 4) | ((__x & (u16)0x0F0FU) << 4); \ + __x = ((__x & (u16)0xCCCCU) >> 2) | ((__x & (u16)0x3333U) << 2); \ + __x = ((__x & (u16)0xAAAAU) >> 1) | ((__x & (u16)0x5555U) << 1); \ + __x; \ +}) + +#define __constant_bitrev8x4(x) \ +({ \ + u32 __x = x; \ + __x = ((__x & (u32)0xF0F0F0F0UL) >> 4) | ((__x & (u32)0x0F0F0F0FUL) << 4); \ + __x = ((__x & (u32)0xCCCCCCCCUL) >> 2) | ((__x & (u32)0x33333333UL) << 2); \ + __x = ((__x & (u32)0xAAAAAAAAUL) >> 1) | ((__x & (u32)0x55555555UL) << 1); \ + __x; \ +}) + +#define __constant_bitrev8(x) \ +({ \ + u8 __x = x; \ + __x = (__x >> 4) | (__x << 4); \ + __x = ((__x & (u8)0xCCU) >> 2) | ((__x & (u8)0x33U) << 2); \ + __x = ((__x & (u8)0xAAU) >> 1) | ((__x & (u8)0x55U) << 1); \ + __x; \ +}) + +#define bitrev32(x) \ +({ \ + u32 __x = x; \ + __builtin_constant_p(__x) ? \ + __constant_bitrev32(__x) : \ + __bitrev32(__x); \ +}) + +#define bitrev16(x) \ +({ \ + u16 __x = x; \ + __builtin_constant_p(__x) ? \ + __constant_bitrev16(__x) : \ + __bitrev16(__x); \ +}) + +#define bitrev8x4(x) \ +({ \ + u32 __x = x; \ + __builtin_constant_p(__x) ? \ + __constant_bitrev8x4(__x) : \ + __bitrev8x4(__x); \ +}) +#define bitrev8(x) \ +({ \ + u8 __x = x; \ + __builtin_constant_p(__x) ? \ + __constant_bitrev8(__x) : \ + __bitrev8(__x) ; \ +}) #endif /* _LINUX_BITREV_H */ diff --git a/include/mpc83xx.h b/include/mpc83xx.h index e1e50ab6b5..a4c5bd3837 100644 --- a/include/mpc83xx.h +++ b/include/mpc83xx.h @@ -1110,6 +1110,8 @@ #define CSBNDS_EA 0x000000FF #define CSBNDS_EA_SHIFT 24 +#ifndef CONFIG_MPC83XX_SDRAM + /* * CSn_CONFIG - Chip Select Configuration Register */ @@ -1407,6 +1409,8 @@ #define ECC_ERROR_MAN_SBEC (0xff000000 >> 24) #define ECC_ERROR_MAN_SBEC_SHIFT 0 +#endif /* !CONFIG_MPC83XX_SDRAM */ + /* * CONFIG_ADDRESS - PCI Config Address Register */ @@ -1510,6 +1514,7 @@ */ #define PMCCR1_POWER_OFF 0x00000020 +#ifndef CONFIG_RAM /* * DDRCDR - DDR Control Driver Register */ @@ -1531,6 +1536,7 @@ #define DDRCDR_DDR_CFG 0x00040000 #define DDRCDR_M_ODR 0x00000002 #define DDRCDR_Q_DRN 0x00000001 +#endif /* !CONFIG_RAM */ /* * PCIE Bridge Register diff --git a/include/sysreset.h b/include/sysreset.h index 81318bdbf5..a5c0b74a47 100644 --- a/include/sysreset.h +++ b/include/sysreset.h @@ -28,6 +28,14 @@ struct sysreset_ops { * (in which case this method will not actually return) */ int (*request)(struct udevice *dev, enum sysreset_t type); + /** + * get_status() - get printable reset status information + * + * @buf: Buffer to receive the textual reset information + * @size: Size of the passed buffer + * @return 0 if OK, -ve on error + */ + int (*get_status)(struct udevice *dev, char *buf, int size); }; #define sysreset_get_ops(dev) ((struct sysreset_ops *)(dev)->driver->ops) @@ -41,6 +49,15 @@ struct sysreset_ops { int sysreset_request(struct udevice *dev, enum sysreset_t type); /** + * get_status() - get printable reset status information + * + * @buf: Buffer to receive the textual reset information + * @size: Size of the passed buffer + * @return 0 if OK, -ve on error + */ +int sysreset_get_status(struct udevice *dev, char *buf, int size); + +/** * sysreset_walk() - cause a system reset * * This works through the available sysreset devices until it finds one that can |