diff options
| author | Marek Vasut <marex@denx.de> | 2015-07-09 02:30:35 +0200 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2015-08-08 14:14:06 +0200 |
| commit | 1115cd2de76bf698b0e621c0c71e4a2cd5ab3b2a (patch) | |
| tree | a3e74c1c9aa9517401e4c0b6ffc34f80cc23fb59 /arch/arm/mach-socfpga/include | |
| parent | 8d009e4542e88b511bab1ce194ba3b04c5c0f6ae (diff) | |
arm: socfpga: reset: Start reworking the SoCFPGA reset manager
Implement macro SOCFPGA_RESET(name), which produces an abstract
reset number. Implement macros which allow extracting the reset
offset in permodrstN register and which permodrstN register the
reset is located in from this abstract reset number. Use these
macros throughout the reset manager.
Signed-off-by: Marek Vasut <marex@denx.de>
Diffstat (limited to 'arch/arm/mach-socfpga/include')
| -rw-r--r-- | arch/arm/mach-socfpga/include/mach/reset_manager.h | 47 |
1 files changed, 39 insertions, 8 deletions
diff --git a/arch/arm/mach-socfpga/include/mach/reset_manager.h b/arch/arm/mach-socfpga/include/mach/reset_manager.h index 7e803f7181..fff4c9614a 100644 --- a/arch/arm/mach-socfpga/include/mach/reset_manager.h +++ b/arch/arm/mach-socfpga/include/mach/reset_manager.h @@ -38,13 +38,44 @@ struct socfpga_reset_manager { #define RSTMGR_CTRL_SWWARMRSTREQ_LSB 1 #endif -#define RSTMGR_PERMODRST_EMAC0_LSB 0 -#define RSTMGR_PERMODRST_EMAC1_LSB 1 -#define RSTMGR_PERMODRST_L4WD0_LSB 6 -#define RSTMGR_PERMODRST_OSC1TIMER0_LSB 8 -#define RSTMGR_PERMODRST_UART0_LSB 16 -#define RSTMGR_PERMODRST_SPIM0_LSB 18 -#define RSTMGR_PERMODRST_SPIM1_LSB 19 -#define RSTMGR_PERMODRST_SDR_LSB 29 +/* + * Define a reset identifier, from which a permodrst bank ID + * and reset ID can be extracted using the subsequent macros + * RSTMGR_RESET() and RSTMGR_BANK(). + */ +#define RSTMGR_BANK_OFFSET 8 +#define RSTMGR_BANK_MASK 0x7 +#define RSTMGR_RESET_OFFSET 0 +#define RSTMGR_RESET_MASK 0x1f +#define RSTMGR_DEFINE(_bank, _offset) \ + ((_bank) << RSTMGR_BANK_OFFSET) | ((_offset) << RSTMGR_RESET_OFFSET) + +/* Extract reset ID from the reset identifier. */ +#define RSTMGR_RESET(_reset) \ + (((_reset) >> RSTMGR_RESET_OFFSET) & RSTMGR_RESET_MASK) + +/* Extract bank ID from the reset identifier. */ +#define RSTMGR_BANK(_reset) \ + (((_reset) >> RSTMGR_BANK_OFFSET) & RSTMGR_BANK_MASK) + +/* + * SocFPGA Cyclone V/Arria V reset IDs, bank mapping is as follows: + * 0 ... mpumodrst + * 1 ... permodrst + * 2 ... per2modrst + * 3 ... brgmodrst + * 4 ... miscmodrst + */ +#define RSTMGR_EMAC0 RSTMGR_DEFINE(1, 0) +#define RSTMGR_EMAC1 RSTMGR_DEFINE(1, 1) +#define RSTMGR_L4WD0 RSTMGR_DEFINE(1, 6) +#define RSTMGR_OSC1TIMER0 RSTMGR_DEFINE(1, 8) +#define RSTMGR_UART0 RSTMGR_DEFINE(1, 16) +#define RSTMGR_SPIM0 RSTMGR_DEFINE(1, 18) +#define RSTMGR_SPIM1 RSTMGR_DEFINE(1, 19) +#define RSTMGR_SDR RSTMGR_DEFINE(1, 29) + +/* Create a human-readable reference to SoCFPGA reset. */ +#define SOCFPGA_RESET(_name) RSTMGR_##_name #endif /* _RESET_MANAGER_H_ */ |