Include dependency graph for at91sam4.c:

Data Structures
struct	archnames

struct	sam4_bank_private

struct	sam4_cfg

struct	sam4_chip

struct	sam4_chip_details

struct	sam4_reg_list

Macros
#define	AT91C_EFC_FCMD_CFB (0xC) /* (EFC) Clear Fuse Bit */

#define	AT91C_EFC_FCMD_CLB (0x9) /* (EFC) Clear Lock Bit */

#define	AT91C_EFC_FCMD_EA (0x5) /* (EFC) Erase All */

#define	AT91C_EFC_FCMD_EPA (0x7) /* (EFC) Erase pages */

#define	AT91C_EFC_FCMD_EWP (0x3) /* (EFC) Erase Page and Write Page */

#define	AT91C_EFC_FCMD_EWPL (0x4) /* (EFC) Erase Page and Write Page then Lock */

#define	AT91C_EFC_FCMD_GETD (0x0) /* (EFC) Get Flash Descriptor */

#define	AT91C_EFC_FCMD_GFB (0xD) /* (EFC) Get Fuse Bit */

#define	AT91C_EFC_FCMD_GLB (0xA) /* (EFC) Get Lock Bit */

#define	AT91C_EFC_FCMD_SFB (0xB) /* (EFC) Set Fuse Bit */

#define	AT91C_EFC_FCMD_SLB (0x8) /* (EFC) Set Lock Bit */

#define	AT91C_EFC_FCMD_SPUI (0xF) /* (EFC) Stop Read Unique ID */

#define	AT91C_EFC_FCMD_STUI (0xE) /* (EFC) Start Read Unique ID */

#define	AT91C_EFC_FCMD_WP (0x1) /* (EFC) Write Page */

#define	AT91C_EFC_FCMD_WPL (0x2) /* (EFC) Write Page and Lock */

#define	FLASH_BANK0_BASE_C32 FLASH_BANK_BASE_C

#define	FLASH_BANK0_BASE_SD FLASH_BANK_BASE_S

#define	FLASH_BANK1_BASE_1024K_SD (FLASH_BANK0_BASE_SD+(1024*1024/2))

#define	FLASH_BANK1_BASE_2048K_SD (FLASH_BANK0_BASE_SD+(2048*1024/2))

#define	FLASH_BANK1_BASE_C32 (FLASH_BANK_BASE_C+(2048*1024/2))

#define	FLASH_BANK_BASE_C 0x01000000

#define	FLASH_BANK_BASE_S 0x00400000

#define	nvpsize2 nvpsize /* these two tables are identical */

#define	OFFSET_EFC_FCR 4

#define	OFFSET_EFC_FMR 0

#define	OFFSET_EFC_FRR 12

#define	OFFSET_EFC_FSR 8

#define	REG_NAME_WIDTH (12)

#define	SAM4_CHIPID_CIDR (0x400E0740)

#define	SAM4_CHIPID_EXID (0x400E0744)

#define	SAM4_CKGR_MCFR (SAM4_PMC_BASE + 0x0024)

#define	SAM4_CKGR_MOR (SAM4_PMC_BASE + 0x0020)

#define	SAM4_CKGR_PLLAR (SAM4_PMC_BASE + 0x0028)

#define	SAM4_CKGR_UCKR (SAM4_PMC_BASE + 0x001c)

#define	SAM4_ENTRY(NAME, FUNC)

#define	SAM4_MAX_FLASH_BANKS 2

#define	SAM4_N_NVM_BITS 3

#define	SAM4_PMC_BASE (0x400E0400)

#define	SAM4_PMC_FSMR (SAM4_PMC_BASE + 0x0070)

#define	SAM4_PMC_FSPR (SAM4_PMC_BASE + 0x0074)

#define	SAM4_PMC_IMR (SAM4_PMC_BASE + 0x006c)

#define	SAM4_PMC_MCKR (SAM4_PMC_BASE + 0x0030)

#define	SAM4_PMC_PCK0 (SAM4_PMC_BASE + 0x0040)

#define	SAM4_PMC_PCK1 (SAM4_PMC_BASE + 0x0044)

#define	SAM4_PMC_PCK2 (SAM4_PMC_BASE + 0x0048)

#define	SAM4_PMC_PCSR (SAM4_PMC_BASE + 0x0018)

#define	SAM4_PMC_SCSR (SAM4_PMC_BASE + 0x0008)

#define	SAM4_PMC_SR (SAM4_PMC_BASE + 0x0068)

Functions
static float	_tomhz (uint32_t freq_hz)

static const char *	_yes_or_no (uint32_t v)

	COMMAND_HANDLER (sam4_handle_gpnvm_command)

	COMMAND_HANDLER (sam4_handle_info_command)

	COMMAND_HANDLER (sam4_handle_slowclk_command)

static int	efc_get_result (struct sam4_bank_private private, uint32_t v)
	Get the result of the last executed command. More...

static int	efc_get_status (struct sam4_bank_private private, uint32_t v)
	Get the current status of the EEFC and the value of some status bits (LOCKE, PROGE). More...

static int	efc_perform_command (struct sam4_bank_private private, unsigned command, unsigned argument, uint32_t status)
	Performs the given command and wait until its completion (or an error). More...

static int	efc_start_command (struct sam4_bank_private *private, unsigned command, unsigned argument)

	FLASH_BANK_COMMAND_HANDLER (sam4_flash_bank_command)

static int	flashd_clr_gpnvm (struct sam4_bank_private *private, unsigned gpnvm)
	Clears the selected GPNVM bit. More...

static int	flashd_erase_entire_bank (struct sam4_bank_private *private)
	Erases the entire flash. More...

static int	flashd_erase_pages (struct sam4_bank_private private, int first_page, int num_pages, uint32_t status)
	Erases the entire flash. More...

static int	flashd_get_gpnvm (struct sam4_bank_private private, unsigned gpnvm, unsigned puthere)
	Gets current GPNVM state. More...

static int	flashd_get_lock_bits (struct sam4_bank_private private, uint32_t v)
	Returns a bit field (at most 64) of locked regions within a page. More...

static int	flashd_lock (struct sam4_bank_private *private, unsigned start_sector, unsigned end_sector)
	Locks regions. More...

static int	flashd_read_uid (struct sam4_bank_private *private)
	Read the unique ID. More...

static int	flashd_set_gpnvm (struct sam4_bank_private *private, unsigned gpnvm)
	Sets the selected GPNVM bit. More...

static int	flashd_unlock (struct sam4_bank_private *private, unsigned start_sector, unsigned end_sector)
	Unlocks all the regions in the given address range. More...

static struct sam4_chip *	get_current_sam4 (struct command_invocation *cmd)

static struct sam4_bank_private *	get_sam4_bank_private (struct flash_bank *bank)

static int	sam4_auto_probe (struct flash_bank *bank)

static int	sam4_erase (struct flash_bank *bank, unsigned int first, unsigned int last)

static void	sam4_explain_chipid_cidr (struct sam4_chip *chip)

static void	sam4_explain_ckgr_mcfr (struct sam4_chip *chip)

static void	sam4_explain_ckgr_mor (struct sam4_chip *chip)

static void	sam4_explain_ckgr_plla (struct sam4_chip *chip)

static void	sam4_explain_mckr (struct sam4_chip *chip)

static void	sam4_free_driver_priv (struct flash_bank *bank)
	Remove all chips from the internal list without distinguishing which one is owned by this bank. More...

static int	sam4_get_details (struct sam4_bank_private *private)

static int	sam4_get_info (struct sam4_chip *chip)

static const struct sam4_reg_list *	sam4_get_reg (struct sam4_chip chip, uint32_t goes_here)
	Given a pointer to where it goes in the structure, determine the register name, address from the all registers table. More...

static uint32_t *	sam4_get_reg_ptr (struct sam4_cfg cfg, const struct sam4_reg_list list)

static int	sam4_info (struct flash_bank bank, struct command_invocation cmd)

static int	sam4_page_read (struct sam4_bank_private private, unsigned pagenum, uint8_t buf)

static int	sam4_page_write (struct sam4_bank_private private, unsigned pagenum, const uint8_t buf)

static int	sam4_probe (struct flash_bank *bank)

static int	sam4_protect (struct flash_bank *bank, int set, unsigned int first, unsigned int last)

static int	sam4_protect_check (struct flash_bank *bank)

static int	sam4_read_all_regs (struct sam4_chip *chip)

static int	sam4_read_this_reg (struct sam4_chip chip, uint32_t goes_here)

static uint32_t	sam4_reg_fieldname (struct sam4_chip chip, const char regname, uint32_t value, unsigned shift, unsigned width)

static int	sam4_set_wait (struct sam4_bank_private *private)

static int	sam4_write (struct flash_bank bank, const uint8_t buffer, uint32_t offset, uint32_t count)

Variables
static const char *const	_rc_freq []

static const char	_unknown [] = "unknown"

static struct sam4_chip *	all_sam4_chips

static const struct sam4_chip_details	all_sam4_details []

static const struct archnames	archnames []

static const struct command_registration	at91sam4_command_handlers []

static const struct command_registration	at91sam4_exec_command_handlers []

const struct flash_driver	at91sam4_flash

static const char *const	eproc_names []

static const char *const	nvpsize []

static const char *const	nvptype []

static const struct sam4_reg_list	sam4_all_regs []

static const char *const	sramsize []

Macro Definition Documentation

◆ AT91C_EFC_FCMD_CFB

#define AT91C_EFC_FCMD_CFB (0xC) /* (EFC) Clear Fuse Bit */

Definition at line 55 of file at91sam4.c.

◆ AT91C_EFC_FCMD_CLB

#define AT91C_EFC_FCMD_CLB (0x9) /* (EFC) Clear Lock Bit */

Definition at line 52 of file at91sam4.c.

◆ AT91C_EFC_FCMD_EA

#define AT91C_EFC_FCMD_EA (0x5) /* (EFC) Erase All */

Definition at line 47 of file at91sam4.c.

◆ AT91C_EFC_FCMD_EPA

#define AT91C_EFC_FCMD_EPA (0x7) /* (EFC) Erase pages */

Definition at line 50 of file at91sam4.c.

◆ AT91C_EFC_FCMD_EWP

#define AT91C_EFC_FCMD_EWP (0x3) /* (EFC) Erase Page and Write Page */

Definition at line 45 of file at91sam4.c.

◆ AT91C_EFC_FCMD_EWPL

#define AT91C_EFC_FCMD_EWPL (0x4) /* (EFC) Erase Page and Write Page then Lock */

Definition at line 46 of file at91sam4.c.

◆ AT91C_EFC_FCMD_GETD

#define AT91C_EFC_FCMD_GETD (0x0) /* (EFC) Get Flash Descriptor */

Definition at line 42 of file at91sam4.c.

◆ AT91C_EFC_FCMD_GFB

#define AT91C_EFC_FCMD_GFB (0xD) /* (EFC) Get Fuse Bit */

Definition at line 56 of file at91sam4.c.

◆ AT91C_EFC_FCMD_GLB

#define AT91C_EFC_FCMD_GLB (0xA) /* (EFC) Get Lock Bit */

Definition at line 53 of file at91sam4.c.

◆ AT91C_EFC_FCMD_SFB

#define AT91C_EFC_FCMD_SFB (0xB) /* (EFC) Set Fuse Bit */

Definition at line 54 of file at91sam4.c.

◆ AT91C_EFC_FCMD_SLB

#define AT91C_EFC_FCMD_SLB (0x8) /* (EFC) Set Lock Bit */

Definition at line 51 of file at91sam4.c.

◆ AT91C_EFC_FCMD_SPUI

#define AT91C_EFC_FCMD_SPUI (0xF) /* (EFC) Stop Read Unique ID */

Definition at line 58 of file at91sam4.c.

◆ AT91C_EFC_FCMD_STUI

#define AT91C_EFC_FCMD_STUI (0xE) /* (EFC) Start Read Unique ID */

Definition at line 57 of file at91sam4.c.

◆ AT91C_EFC_FCMD_WP

#define AT91C_EFC_FCMD_WP (0x1) /* (EFC) Write Page */

Definition at line 43 of file at91sam4.c.

◆ AT91C_EFC_FCMD_WPL

#define AT91C_EFC_FCMD_WPL (0x2) /* (EFC) Write Page and Lock */

Definition at line 44 of file at91sam4.c.

◆ FLASH_BANK0_BASE_C32

#define FLASH_BANK0_BASE_C32 FLASH_BANK_BASE_C

Definition at line 39 of file at91sam4.c.

◆ FLASH_BANK0_BASE_SD

#define FLASH_BANK0_BASE_SD FLASH_BANK_BASE_S

Definition at line 32 of file at91sam4.c.

◆ FLASH_BANK1_BASE_1024K_SD

#define FLASH_BANK1_BASE_1024K_SD (FLASH_BANK0_BASE_SD+(1024*1024/2))

Definition at line 34 of file at91sam4.c.

◆ FLASH_BANK1_BASE_2048K_SD

#define FLASH_BANK1_BASE_2048K_SD (FLASH_BANK0_BASE_SD+(2048*1024/2))

Definition at line 36 of file at91sam4.c.

◆ FLASH_BANK1_BASE_C32

#define FLASH_BANK1_BASE_C32 (FLASH_BANK_BASE_C+(2048*1024/2))

Definition at line 40 of file at91sam4.c.

◆ FLASH_BANK_BASE_C

#define FLASH_BANK_BASE_C 0x01000000

Definition at line 29 of file at91sam4.c.

◆ FLASH_BANK_BASE_S

#define FLASH_BANK_BASE_S 0x00400000

Definition at line 28 of file at91sam4.c.

◆ nvpsize2

#define nvpsize2 nvpsize /* these two tables are identical */

Definition at line 1954 of file at91sam4.c.

◆ OFFSET_EFC_FCR

#define OFFSET_EFC_FCR 4

Definition at line 61 of file at91sam4.c.

◆ OFFSET_EFC_FMR

#define OFFSET_EFC_FMR 0

Definition at line 60 of file at91sam4.c.

◆ OFFSET_EFC_FRR

#define OFFSET_EFC_FRR 12

Definition at line 63 of file at91sam4.c.

◆ OFFSET_EFC_FSR

#define OFFSET_EFC_FSR 8

Definition at line 62 of file at91sam4.c.

◆ REG_NAME_WIDTH

#define REG_NAME_WIDTH (12)

Definition at line 25 of file at91sam4.c.

◆ SAM4_CHIPID_CIDR

#define SAM4_CHIPID_CIDR (0x400E0740)

Definition at line 89 of file at91sam4.c.

◆ SAM4_CHIPID_EXID

#define SAM4_CHIPID_EXID (0x400E0744)

Definition at line 91 of file at91sam4.c.

◆ SAM4_CKGR_MCFR

#define SAM4_CKGR_MCFR (SAM4_PMC_BASE + 0x0024)

Definition at line 103 of file at91sam4.c.

◆ SAM4_CKGR_MOR

#define SAM4_CKGR_MOR (SAM4_PMC_BASE + 0x0020)

Definition at line 101 of file at91sam4.c.

◆ SAM4_CKGR_PLLAR

#define SAM4_CKGR_PLLAR (SAM4_PMC_BASE + 0x0028)

Definition at line 105 of file at91sam4.c.

◆ SAM4_CKGR_UCKR

#define SAM4_CKGR_UCKR (SAM4_PMC_BASE + 0x001c)

Definition at line 99 of file at91sam4.c.

◆ SAM4_ENTRY

#define SAM4_ENTRY	(	NAME,
		FUNC
	)

Value:

                          { .address = SAM4_ ## NAME, .struct_offset = offsetof( \
                          struct sam4_cfg, \
                          NAME), # NAME, FUNC }

Definition at line 2305 of file at91sam4.c.

◆ SAM4_MAX_FLASH_BANKS

#define SAM4_MAX_FLASH_BANKS 2

Definition at line 165 of file at91sam4.c.

◆ SAM4_N_NVM_BITS

#define SAM4_N_NVM_BITS 3

Definition at line 160 of file at91sam4.c.

◆ SAM4_PMC_BASE

#define SAM4_PMC_BASE (0x400E0400)

Definition at line 94 of file at91sam4.c.

◆ SAM4_PMC_FSMR

#define SAM4_PMC_FSMR (SAM4_PMC_BASE + 0x0070)

Definition at line 119 of file at91sam4.c.

◆ SAM4_PMC_FSPR

#define SAM4_PMC_FSPR (SAM4_PMC_BASE + 0x0074)

Definition at line 121 of file at91sam4.c.

◆ SAM4_PMC_IMR

#define SAM4_PMC_IMR (SAM4_PMC_BASE + 0x006c)

Definition at line 117 of file at91sam4.c.

◆ SAM4_PMC_MCKR

#define SAM4_PMC_MCKR (SAM4_PMC_BASE + 0x0030)

Definition at line 107 of file at91sam4.c.

◆ SAM4_PMC_PCK0

#define SAM4_PMC_PCK0 (SAM4_PMC_BASE + 0x0040)

Definition at line 109 of file at91sam4.c.

◆ SAM4_PMC_PCK1

#define SAM4_PMC_PCK1 (SAM4_PMC_BASE + 0x0044)

Definition at line 111 of file at91sam4.c.

◆ SAM4_PMC_PCK2

#define SAM4_PMC_PCK2 (SAM4_PMC_BASE + 0x0048)

Definition at line 113 of file at91sam4.c.

◆ SAM4_PMC_PCSR

#define SAM4_PMC_PCSR (SAM4_PMC_BASE + 0x0018)

Definition at line 97 of file at91sam4.c.

◆ SAM4_PMC_SCSR

#define SAM4_PMC_SCSR (SAM4_PMC_BASE + 0x0008)

Definition at line 95 of file at91sam4.c.

◆ SAM4_PMC_SR

#define SAM4_PMC_SR (SAM4_PMC_BASE + 0x0068)

Definition at line 115 of file at91sam4.c.

Function Documentation

◆ _tomhz()

static float _tomhz ( uint32_t freq_hz )

static

Definition at line 65 of file at91sam4.c.

Referenced by sam4_explain_ckgr_mcfr(), sam4_explain_ckgr_plla(), sam4_explain_mckr(), and sam4_get_info().

◆ _yes_or_no()

static const char* _yes_or_no ( uint32_t v )

static

Definition at line 2054 of file at91sam4.c.

Referenced by sam4_explain_chipid_cidr(), sam4_explain_ckgr_mcfr(), and sam4_explain_ckgr_mor().

◆ COMMAND_HANDLER() [1/3]

COMMAND_HANDLER ( sam4_handle_gpnvm_command )

◆ COMMAND_HANDLER() [2/3]

COMMAND_HANDLER ( sam4_handle_info_command )

Definition at line 3041 of file at91sam4.c.

References at91sam4_flash, sam4_bank_private::bank, sam4_chip_details::bank, CMD, command_print(), sam4_chip::details, ERROR_FAIL, ERROR_OK, get_current_sam4(), LOG_DEBUG, flash_driver::name, sam4_bank_private::present, sam4_bank_private::probed, sam4_auto_probe(), sam4_get_info(), and SAM4_MAX_FLASH_BANKS.

◆ COMMAND_HANDLER() [3/3]

COMMAND_HANDLER ( sam4_handle_slowclk_command )

Definition at line 3183 of file at91sam4.c.

◆ efc_get_result()

static int efc_get_result	(	struct sam4_bank_private *	private,
		uint32_t *	v
	)

static

Get the result of the last executed command.

Parameters

private	- info about the bank
v	- result goes here

Definition at line 1468 of file at91sam4.c.

References LOG_DEBUG, OFFSET_EFC_FRR, and target_read_u32().

Referenced by flashd_get_gpnvm(), and flashd_get_lock_bits().

◆ efc_get_status()

static int efc_get_status	(	struct sam4_bank_private *	private,
		uint32_t *	v
	)

static

Get the current status of the EEFC and the value of some status bits (LOCKE, PROGE).

Parameters

private	- info about the bank
v	- result goes here

Definition at line 1448 of file at91sam4.c.

References LOG_DEBUG, OFFSET_EFC_FSR, and target_read_u32().

Referenced by efc_perform_command(), and efc_start_command().

◆ efc_perform_command()

static int efc_perform_command	(	struct sam4_bank_private *	private,
		unsigned	command,
		unsigned	argument,
		uint32_t *	status
	)

static

Performs the given command and wait until its completion (or an error).

Parameters

private	- info about the bank
command	- Command to perform.
argument	- Optional command argument.
status	- put command status bits here

Definition at line 1576 of file at91sam4.c.

References efc_get_status(), efc_start_command(), ERROR_FAIL, ERROR_OK, LOG_ERROR, status, and timeval_ms().

Referenced by flashd_clr_gpnvm(), flashd_erase_entire_bank(), flashd_erase_pages(), flashd_get_gpnvm(), flashd_get_lock_bits(), flashd_lock(), flashd_read_uid(), flashd_set_gpnvm(), flashd_unlock(), and sam4_page_write().

◆ efc_start_command()

static int efc_start_command	(	struct sam4_bank_private *	private,
		unsigned	command,
		unsigned	argument
	)

static

Definition at line 1481 of file at91sam4.c.

References AT91C_EFC_FCMD_CFB, AT91C_EFC_FCMD_CLB, AT91C_EFC_FCMD_EA, AT91C_EFC_FCMD_EPA, AT91C_EFC_FCMD_EWP, AT91C_EFC_FCMD_EWPL, AT91C_EFC_FCMD_GETD, AT91C_EFC_FCMD_GFB, AT91C_EFC_FCMD_GLB, AT91C_EFC_FCMD_SFB, AT91C_EFC_FCMD_SLB, AT91C_EFC_FCMD_SPUI, AT91C_EFC_FCMD_STUI, AT91C_EFC_FCMD_WP, AT91C_EFC_FCMD_WPL, efc_get_status(), ERROR_FAIL, ERROR_OK, LOG_DEBUG, LOG_ERROR, OFFSET_EFC_FCR, and target_write_u32().

Referenced by efc_perform_command(), and flashd_read_uid().

◆ FLASH_BANK_COMMAND_HANDLER()

FLASH_BANK_COMMAND_HANDLER ( sam4_flash_bank_command )

Definition at line 2476 of file at91sam4.c.

References all_sam4_chips, sam4_bank_private::bank, sam4_chip_details::bank, bank, sam4_chip::cfg, sam4_bank_private::chip, sam4_chip::details, ERROR_FAIL, ERROR_OK, FLASH_BANK1_BASE_1024K_SD, FLASH_BANK1_BASE_2048K_SD, FLASH_BANK1_BASE_C32, FLASH_BANK_BASE_C, FLASH_BANK_BASE_S, LOG_ERROR, sam4_chip::next, sam4_chip::probed, sam4_cfg::slow_freq, and sam4_chip::target.

◆ flashd_clr_gpnvm()

static int flashd_clr_gpnvm	(	struct sam4_bank_private *	private,
		unsigned	gpnvm
	)

static

Clears the selected GPNVM bit.

Parameters

private	info about the bank
gpnvm	GPNVM index.

Returns: 0 if successful; otherwise returns an error code.

Definition at line 1760 of file at91sam4.c.

References AT91C_EFC_FCMD_CFB, efc_perform_command(), ERROR_FAIL, ERROR_OK, flashd_get_gpnvm(), sam4_chip_details::gpnvm, LOG_DEBUG, LOG_ERROR, and NULL.

Referenced by COMMAND_HANDLER().

◆ flashd_erase_entire_bank()

static int flashd_erase_entire_bank ( struct sam4_bank_private * private )

static

Erases the entire flash.

Parameters

private - the info about the bank.

Definition at line 1660 of file at91sam4.c.

References AT91C_EFC_FCMD_EA, efc_perform_command(), LOG_DEBUG, and NULL.

Referenced by sam4_erase().

◆ flashd_erase_pages()

static int flashd_erase_pages	(	struct sam4_bank_private *	private,
		int	first_page,
		int	num_pages,
		uint32_t *	status
	)

static

Erases the entire flash.

Parameters

private	- the info about the bank.
first_page
num_pages
status

Definition at line 1673 of file at91sam4.c.

References AT91C_EFC_FCMD_EPA, efc_perform_command(), LOG_DEBUG, and status.

Referenced by sam4_erase().

◆ flashd_get_gpnvm()

static int flashd_get_gpnvm	(	struct sam4_bank_private *	private,
		unsigned	gpnvm,
		unsigned *	puthere
	)

static

Gets current GPNVM state.

Parameters

private	- info about the bank.
gpnvm	- GPNVM bit index.
puthere	- result stored here.

Definition at line 1719 of file at91sam4.c.

References AT91C_EFC_FCMD_GFB, efc_get_result(), efc_perform_command(), ERROR_FAIL, ERROR_OK, sam4_chip_details::gpnvm, LOG_DEBUG, LOG_ERROR, and NULL.

Referenced by COMMAND_HANDLER(), flashd_clr_gpnvm(), and flashd_set_gpnvm().

◆ flashd_get_lock_bits()

static int flashd_get_lock_bits	(	struct sam4_bank_private *	private,
		uint32_t *	v
	)

static

Returns a bit field (at most 64) of locked regions within a page.

Parameters

private	info about the bank
v	where to store locked bits

Definition at line 1826 of file at91sam4.c.

References AT91C_EFC_FCMD_GLB, efc_get_result(), efc_perform_command(), ERROR_OK, LOG_DEBUG, and NULL.

Referenced by sam4_protect_check().

◆ flashd_lock()

static int flashd_lock	(	struct sam4_bank_private *	private,
		unsigned	start_sector,
		unsigned	end_sector
	)

static

Locks regions.

Parameters

private	- info about the bank
start_sector	- first sector to lock
end_sector	- last sector (inclusive) to lock

Definition at line 1878 of file at91sam4.c.

References AT91C_EFC_FCMD_SLB, efc_perform_command(), ERROR_OK, and status.

Referenced by sam4_protect().

◆ flashd_read_uid()

static int flashd_read_uid ( struct sam4_bank_private * private )

static

Read the unique ID.

Parameters

private - info about the bank The unique ID is stored in the 'private' structure.

Definition at line 1620 of file at91sam4.c.

References AT91C_EFC_FCMD_SPUI, AT91C_EFC_FCMD_STUI, efc_perform_command(), efc_start_command(), LOG_DEBUG, NULL, and target_read_u32().

Referenced by sam4_probe().

◆ flashd_set_gpnvm()

static int flashd_set_gpnvm	(	struct sam4_bank_private *	private,
		unsigned	gpnvm
	)

static

Sets the selected GPNVM bit.

Parameters

private	info about the bank
gpnvm	GPNVM index.

Definition at line 1792 of file at91sam4.c.

References AT91C_EFC_FCMD_SFB, efc_perform_command(), ERROR_FAIL, ERROR_OK, flashd_get_gpnvm(), sam4_chip_details::gpnvm, LOG_ERROR, and NULL.

Referenced by COMMAND_HANDLER().

◆ flashd_unlock()

static int flashd_unlock	(	struct sam4_bank_private *	private,
		unsigned	start_sector,
		unsigned	end_sector
	)

static

Unlocks all the regions in the given address range.

Parameters

private	info about the bank
start_sector	first sector to unlock
end_sector	last (inclusive) to unlock

Definition at line 1848 of file at91sam4.c.

References AT91C_EFC_FCMD_CLB, efc_perform_command(), ERROR_OK, and status.

Referenced by sam4_protect().

◆ get_current_sam4()

static struct sam4_chip* get_current_sam4 ( struct command_invocation * cmd )

static

Definition at line 188 of file at91sam4.c.

Referenced by COMMAND_HANDLER().

◆ get_sam4_bank_private()

static struct sam4_bank_private* get_sam4_bank_private ( struct flash_bank * bank )

static

Definition at line 2330 of file at91sam4.c.

References bank.

Referenced by sam4_auto_probe(), sam4_erase(), sam4_info(), sam4_probe(), sam4_protect(), sam4_protect_check(), and sam4_write().

◆ sam4_auto_probe()

static int sam4_auto_probe ( struct flash_bank * bank )

static

Definition at line 2709 of file at91sam4.c.

References bank, ERROR_OK, get_sam4_bank_private(), and sam4_probe().

Referenced by COMMAND_HANDLER(), and sam4_erase().

◆ sam4_erase()

static int sam4_erase	(	struct flash_bank *	bank,
		unsigned int	first,
		unsigned int	last
	)

static

Definition at line 2720 of file at91sam4.c.

References bank, ERROR_FAIL, ERROR_FLASH_BANK_NOT_PROBED, ERROR_OK, ERROR_TARGET_NOT_HALTED, flashd_erase_entire_bank(), flashd_erase_pages(), get_sam4_bank_private(), LOG_DEBUG, LOG_ERROR, LOG_INFO, sam4_auto_probe(), status, and TARGET_HALTED.

◆ sam4_explain_chipid_cidr()

static void sam4_explain_chipid_cidr ( struct sam4_chip * chip )

static

Definition at line 2110 of file at91sam4.c.

References _unknown, _yes_or_no(), sam4_chip::cfg, sam4_cfg::CHIPID_CIDR, eproc_names, LOG_USER, LOG_USER_N, archnames::name, nvpsize, nvpsize2, nvptype, sam4_reg_fieldname(), and sramsize.

Referenced by sam4_get_details().

◆ sam4_explain_ckgr_mcfr()

static void sam4_explain_ckgr_mcfr ( struct sam4_chip * chip )

static

Definition at line 2149 of file at91sam4.c.

References _tomhz(), _yes_or_no(), sam4_chip::cfg, sam4_cfg::CKGR_MCFR, LOG_USER, sam4_cfg::mainosc_freq, sam4_reg_fieldname(), and sam4_cfg::slow_freq.

◆ sam4_explain_ckgr_mor()

static void sam4_explain_ckgr_mor ( struct sam4_chip * chip )

static

Definition at line 2066 of file at91sam4.c.

References _rc_freq, _yes_or_no(), sam4_chip::cfg, sam4_cfg::CKGR_MOR, LOG_USER, sam4_cfg::rc_freq, sam4_reg_fieldname(), and sam4_cfg::slow_freq.

◆ sam4_explain_ckgr_plla()

static void sam4_explain_ckgr_plla ( struct sam4_chip * chip )

static

Definition at line 2167 of file at91sam4.c.

References _tomhz(), sam4_chip::cfg, sam4_cfg::CKGR_PLLAR, LOG_USER, LOG_USER_N, sam4_cfg::mainosc_freq, sam4_cfg::plla_freq, and sam4_reg_fieldname().

◆ sam4_explain_mckr()

static void sam4_explain_mckr ( struct sam4_chip * chip )

static

Definition at line 2187 of file at91sam4.c.

References _tomhz(), sam4_chip::cfg, sam4_cfg::CKGR_UCKR, sam4_cfg::cpu_freq, sam4_cfg::fclk_freq, LOG_USER, sam4_cfg::mainosc_freq, sam4_cfg::mclk_freq, NULL, sam4_cfg::plla_freq, sam4_cfg::PMC_MCKR, sam4_reg_fieldname(), and sam4_cfg::slow_freq.

◆ sam4_free_driver_priv()

static void sam4_free_driver_priv ( struct flash_bank * bank )

static

Remove all chips from the internal list without distinguishing which one is owned by this bank.

This simplification works only for one shot deallocation like current flash_free_all_banks()

Definition at line 2544 of file at91sam4.c.

References all_sam4_chips, sam4_chip::next, and NULL.

◆ sam4_get_details()

static int sam4_get_details ( struct sam4_bank_private * private )

static

Definition at line 2555 of file at91sam4.c.

References all_sam4_details, sam4_bank_private::bank, sam4_chip_details::bank, sam4_bank_private::chip, sam4_chip_details::chipid_cidr, sam4_chip::details, ERROR_FAIL, ERROR_OK, LOG_DEBUG, LOG_ERROR, LOG_INFO, sam4_chip_details::name, sam4_explain_chipid_cidr(), and SAM4_MAX_FLASH_BANKS.

Referenced by sam4_probe().

◆ sam4_get_info()

static int sam4_get_info ( struct sam4_chip * chip )

static

Definition at line 2403 of file at91sam4.c.

References _tomhz(), sam4_chip::cfg, sam4_cfg::cpu_freq, ERROR_OK, LOG_DEBUG, LOG_USER, sam4_cfg::mainosc_freq, sam4_cfg::mclk_freq, reg::name, sam4_cfg::plla_freq, sam4_cfg::rc_freq, REG_NAME_WIDTH, sam4_all_regs, sam4_get_reg_ptr(), sam4_read_all_regs(), and sam4_cfg::unique_id.

Referenced by COMMAND_HANDLER(), and sam4_probe().

◆ sam4_get_reg()

static const struct sam4_reg_list* sam4_get_reg	(	struct sam4_chip *	chip,
		uint32_t *	goes_here
	)

static

Given a pointer to where it goes in the structure, determine the register name, address from the all registers table.

Definition at line 2339 of file at91sam4.c.

References sam4_chip::cfg, LOG_ERROR, reg::name, NULL, and sam4_all_regs.

Referenced by sam4_read_this_reg().

◆ sam4_get_reg_ptr()

static uint32_t* sam4_get_reg_ptr	(	struct sam4_cfg *	cfg,
		const struct sam4_reg_list *	list
	)

static

Definition at line 2292 of file at91sam4.c.

Referenced by sam4_get_info(), and sam4_read_all_regs().

◆ sam4_info()

static int sam4_info	(	struct flash_bank *	bank,
		struct command_invocation *	cmd
	)

static

Definition at line 2616 of file at91sam4.c.

References bank, cmd, command_print_sameline(), ERROR_FAIL, ERROR_OK, get_sam4_bank_private(), and TARGET_ADDR_FMT.

◆ sam4_page_read()

static int sam4_page_read	(	struct sam4_bank_private *	private,
		unsigned	pagenum,
		uint8_t *	buf
	)

static

Definition at line 2799 of file at91sam4.c.

References ERROR_OK, LOG_ERROR, and target_read_memory().

Referenced by sam4_write().

◆ sam4_page_write()

static int sam4_page_write	(	struct sam4_bank_private *	private,
		unsigned	pagenum,
		const uint8_t *	buf
	)

static

Definition at line 2844 of file at91sam4.c.

References AT91C_EFC_FCMD_WP, efc_perform_command(), ERROR_FAIL, ERROR_OK, LOG_DEBUG, LOG_ERROR, status, and target_write_memory().

Referenced by sam4_write().

◆ sam4_probe()

static int sam4_probe ( struct flash_bank * bank )

static

Definition at line 2634 of file at91sam4.c.

References bank, ERROR_FAIL, ERROR_OK, ERROR_TARGET_NOT_HALTED, flashd_read_uid(), get_sam4_bank_private(), LOG_DEBUG, LOG_ERROR, sam4_get_details(), sam4_get_info(), SAM4_MAX_FLASH_BANKS, sam4_protect_check(), sam4_read_all_regs(), TARGET_ADDR_FMT, and TARGET_HALTED.

Referenced by sam4_auto_probe().

◆ sam4_protect()

static int sam4_protect	(	struct flash_bank *	bank,
		int	set,
		unsigned int	first,
		unsigned int	last
	)

static

Definition at line 2773 of file at91sam4.c.

References bank, ERROR_FLASH_BANK_NOT_PROBED, ERROR_TARGET_NOT_HALTED, flashd_lock(), flashd_unlock(), get_sam4_bank_private(), LOG_DEBUG, LOG_ERROR, and TARGET_HALTED.

◆ sam4_protect_check()

static int sam4_protect_check ( struct flash_bank * bank )

static

Definition at line 2443 of file at91sam4.c.

References bank, ERROR_FAIL, ERROR_FLASH_BANK_NOT_PROBED, ERROR_OK, ERROR_TARGET_NOT_HALTED, flashd_get_lock_bits(), get_sam4_bank_private(), LOG_DEBUG, LOG_ERROR, and TARGET_HALTED.

Referenced by sam4_probe().

◆ sam4_read_all_regs()

static int sam4_read_all_regs ( struct sam4_chip * chip )

static

Definition at line 2383 of file at91sam4.c.

References sam4_chip::cfg, ERROR_OK, LOG_ERROR, reg::name, sam4_all_regs, sam4_get_reg_ptr(), and sam4_read_this_reg().

Referenced by sam4_get_info(), and sam4_probe().

◆ sam4_read_this_reg()

static int sam4_read_this_reg	(	struct sam4_chip *	chip,
		uint32_t *	goes_here
	)

static

Definition at line 2366 of file at91sam4.c.

References ERROR_FAIL, ERROR_OK, LOG_ERROR, reg::name, sam4_get_reg(), sam4_chip::target, and target_read_u32().

Referenced by sam4_read_all_regs().

◆ sam4_reg_fieldname()

static uint32_t sam4_reg_fieldname	(	struct sam4_chip *	chip,
		const char *	regname,
		uint32_t	value,
		unsigned	shift,
		unsigned	width
	)

static

Definition at line 1905 of file at91sam4.c.

References LOG_USER_N, REG_NAME_WIDTH, and width.

Referenced by sam4_explain_chipid_cidr(), sam4_explain_ckgr_mcfr(), sam4_explain_ckgr_mor(), sam4_explain_ckgr_plla(), and sam4_explain_mckr().

◆ sam4_set_wait()

static int sam4_set_wait ( struct sam4_bank_private * private )

static

Definition at line 2818 of file at91sam4.c.

References ERROR_OK, LOG_DEBUG, LOG_ERROR, target_read_u32(), and target_write_u32().

Referenced by sam4_write().

◆ sam4_write()

static int sam4_write	(	struct flash_bank *	bank,
		const uint8_t *	buffer,
		uint32_t	offset,
		uint32_t	count
	)

static

Definition at line 2888 of file at91sam4.c.

References bank, buffer, count, ERROR_FAIL, ERROR_FLASH_BANK_NOT_PROBED, ERROR_OK, ERROR_TARGET_NOT_HALTED, get_sam4_bank_private(), LOG_DEBUG, LOG_ERROR, NULL, offset, sam4_page_read(), sam4_page_write(), sam4_set_wait(), and TARGET_HALTED.

Variable Documentation

◆ _rc_freq

const char* const _rc_freq[]

static

Initial value:

= {
    "4 MHz", "8 MHz", "12 MHz", "reserved"
}

Definition at line 2062 of file at91sam4.c.

Referenced by sam4_explain_ckgr_mor().

◆ _unknown

const char _unknown[] = "unknown"

static

Definition at line 1934 of file at91sam4.c.

Referenced by sam4_explain_chipid_cidr().

◆ all_sam4_chips

struct sam4_chip* all_sam4_chips

static

Definition at line 186 of file at91sam4.c.

Referenced by FLASH_BANK_COMMAND_HANDLER(), and sam4_free_driver_priv().

◆ all_sam4_details

const struct sam4_chip_details all_sam4_details[]

static

Definition at line 188 of file at91sam4.c.

Referenced by sam4_get_details().

◆ archnames

const struct archnames archnames[]

static

◆ at91sam4_command_handlers

const struct command_registration at91sam4_command_handlers[]

static

Initial value:

= {
    {
        .name = "at91sam4",
        .mode = COMMAND_ANY,
        .help = "at91sam4 flash command group",
        .usage = "",
        .chain = at91sam4_exec_command_handlers,
    },
    COMMAND_REGISTRATION_DONE
}

Definition at line 3183 of file at91sam4.c.

◆ at91sam4_exec_command_handlers

const struct command_registration at91sam4_exec_command_handlers[]

static

Initial value:

= {
    {
        .name = "gpnvm",
        .handler = sam4_handle_gpnvm_command,
        .mode = COMMAND_EXEC,
        .usage = "[('clr'|'set'|'show') bitnum]",
        .help = "Without arguments, shows all bits in the gpnvm "
            "register.  Otherwise, clears, sets, or shows one "
            "General Purpose Non-Volatile Memory (gpnvm) bit.",
    },
    {
        .name = "info",
        .handler = sam4_handle_info_command,
        .mode = COMMAND_EXEC,
        .help = "Print information about the current at91sam4 chip "
            "and its flash configuration.",
        .usage = "",
    },
    {
        .name = "slowclk",
        .handler = sam4_handle_slowclk_command,
        .mode = COMMAND_EXEC,
        .usage = "[clock_hz]",
        .help = "Display or set the slowclock frequency "
            "(default 32768 Hz).",
    },
    COMMAND_REGISTRATION_DONE
}

Definition at line 3183 of file at91sam4.c.

◆ at91sam4_flash

const struct flash_driver at91sam4_flash

Initial value:

= {
    .name = "at91sam4",
    .commands = at91sam4_command_handlers,
    .flash_bank_command = sam4_flash_bank_command,
    .erase = sam4_erase,
    .protect = sam4_protect,
    .write = sam4_write,
    .read = default_flash_read,
    .probe = sam4_probe,
    .auto_probe = sam4_auto_probe,
    .erase_check = default_flash_blank_check,
    .protect_check = sam4_protect_check,
    .info = sam4_info,
    .free_driver_priv = sam4_free_driver_priv,
}

Definition at line 3183 of file at91sam4.c.

Referenced by COMMAND_HANDLER().

◆ eproc_names

const char* const eproc_names[]

static

Initial value:

= {
    "Cortex-M7",                
    "arm946es",                 
    "arm7tdmi",                 
    "Cortex-M3",                
    "arm920t",                  
    "arm926ejs",                
    "Cortex-A5",                
    "Cortex-M4",                
    _unknown,                   
    _unknown,                   
    _unknown,                   
    _unknown,                   
    _unknown,                   
    _unknown,                   
    _unknown,                   
    _unknown,                   
}

Definition at line 1935 of file at91sam4.c.

Referenced by sam4_explain_chipid_cidr().

◆ nvpsize

const char* const nvpsize[]

static

Initial value:

= {
    "none",                     
    "8K bytes",                 
    "16K bytes",                
    "32K bytes",                
    _unknown,                   
    "64K bytes",                
    _unknown,                   
    "128K bytes",               
    "160K bytes",               
    "256K bytes",               
    "512K bytes",               
    _unknown,                   
    "1024K bytes",              
    _unknown,                   
    "2048K bytes",              
    _unknown,                   
}

Definition at line 1955 of file at91sam4.c.

Referenced by sam4_explain_chipid_cidr().

◆ nvptype

const char* const nvptype[]

static

Initial value:

= {
    "rom",  
    "romless or onchip flash",  
    "embedded flash memory",
    "rom(nvpsiz) + embedded flash (nvpsiz2)",   
    "sram emulating flash", 
    _unknown,   
    _unknown,   
    _unknown,   
}

Definition at line 2043 of file at91sam4.c.

Referenced by sam4_explain_chipid_cidr().

◆ sam4_all_regs

const struct sam4_reg_list sam4_all_regs[]

static

Initial value:

= {
    SAM4_ENTRY(CKGR_MOR, sam4_explain_ckgr_mor),
    SAM4_ENTRY(CKGR_MCFR, sam4_explain_ckgr_mcfr),
    SAM4_ENTRY(CKGR_PLLAR, sam4_explain_ckgr_plla),
    SAM4_ENTRY(CKGR_UCKR, NULL),
    SAM4_ENTRY(PMC_FSMR, NULL),
    SAM4_ENTRY(PMC_FSPR, NULL),
    SAM4_ENTRY(PMC_IMR, NULL),
    SAM4_ENTRY(PMC_MCKR, sam4_explain_mckr),
    SAM4_ENTRY(PMC_PCK0, NULL),
    SAM4_ENTRY(PMC_PCK1, NULL),
    SAM4_ENTRY(PMC_PCK2, NULL),
    SAM4_ENTRY(PMC_PCSR, NULL),
    SAM4_ENTRY(PMC_SCSR, NULL),
    SAM4_ENTRY(PMC_SR, NULL),
    SAM4_ENTRY(CHIPID_CIDR, sam4_explain_chipid_cidr),
    SAM4_ENTRY(CHIPID_EXID, NULL),
    
    { .name = NULL }
}

Definition at line 2292 of file at91sam4.c.

Referenced by sam4_get_info(), sam4_get_reg(), and sam4_read_all_regs().

◆ sramsize

const char* const sramsize[]

static

Initial value:

= {
    "48K Bytes",                
    "1K Bytes",                 
    "2K Bytes",                 
    "6K Bytes",                 
    "112K Bytes",               
    "4K Bytes",                 
    "80K Bytes",                
    "160K Bytes",               
    "8K Bytes",                 
    "16K Bytes",                
    "32K Bytes",                
    "64K Bytes",                
    "128K Bytes",               
    "256K Bytes",               
    "96K Bytes",                
    "512K Bytes",               
 
}

Definition at line 1974 of file at91sam4.c.

Referenced by sam4_explain_chipid_cidr().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ AT91C_EFC_FCMD_CFB

◆ AT91C_EFC_FCMD_CLB

◆ AT91C_EFC_FCMD_EA

◆ AT91C_EFC_FCMD_EPA

◆ AT91C_EFC_FCMD_EWP

◆ AT91C_EFC_FCMD_EWPL

◆ AT91C_EFC_FCMD_GETD

◆ AT91C_EFC_FCMD_GFB

◆ AT91C_EFC_FCMD_GLB

◆ AT91C_EFC_FCMD_SFB

◆ AT91C_EFC_FCMD_SLB

◆ AT91C_EFC_FCMD_SPUI

◆ AT91C_EFC_FCMD_STUI

◆ AT91C_EFC_FCMD_WP

◆ AT91C_EFC_FCMD_WPL

◆ FLASH_BANK0_BASE_C32

◆ FLASH_BANK0_BASE_SD

◆ FLASH_BANK1_BASE_1024K_SD

◆ FLASH_BANK1_BASE_2048K_SD

◆ FLASH_BANK1_BASE_C32

◆ FLASH_BANK_BASE_C

◆ FLASH_BANK_BASE_S

◆ nvpsize2

◆ OFFSET_EFC_FCR

◆ OFFSET_EFC_FMR

◆ OFFSET_EFC_FRR

◆ OFFSET_EFC_FSR

◆ REG_NAME_WIDTH

◆ SAM4_CHIPID_CIDR

◆ SAM4_CHIPID_EXID

◆ SAM4_CKGR_MCFR

◆ SAM4_CKGR_MOR

◆ SAM4_CKGR_PLLAR

◆ SAM4_CKGR_UCKR

◆ SAM4_ENTRY

◆ SAM4_MAX_FLASH_BANKS

◆ SAM4_N_NVM_BITS

◆ SAM4_PMC_BASE

◆ SAM4_PMC_FSMR

◆ SAM4_PMC_FSPR

◆ SAM4_PMC_IMR

◆ SAM4_PMC_MCKR

◆ SAM4_PMC_PCK0

◆ SAM4_PMC_PCK1

◆ SAM4_PMC_PCK2

◆ SAM4_PMC_PCSR

◆ SAM4_PMC_SCSR

◆ SAM4_PMC_SR

Function Documentation

◆ _tomhz()

◆ _yes_or_no()

◆ COMMAND_HANDLER() [1/3]

◆ COMMAND_HANDLER() [2/3]

◆ COMMAND_HANDLER() [3/3]

◆ efc_get_result()

◆ efc_get_status()

◆ efc_perform_command()

◆ efc_start_command()

◆ FLASH_BANK_COMMAND_HANDLER()

◆ flashd_clr_gpnvm()

◆ flashd_erase_entire_bank()

◆ flashd_erase_pages()

◆ flashd_get_gpnvm()

◆ flashd_get_lock_bits()

◆ flashd_lock()

◆ flashd_read_uid()

◆ flashd_set_gpnvm()

◆ flashd_unlock()

◆ get_current_sam4()

◆ get_sam4_bank_private()

◆ sam4_auto_probe()

◆ sam4_erase()

◆ sam4_explain_chipid_cidr()

◆ sam4_explain_ckgr_mcfr()

◆ sam4_explain_ckgr_mor()