diff options
Diffstat (limited to 'arch/arm/cpu/armv7/socfpga/scan_manager.c')
| -rw-r--r-- | arch/arm/cpu/armv7/socfpga/scan_manager.c | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/arch/arm/cpu/armv7/socfpga/scan_manager.c b/arch/arm/cpu/armv7/socfpga/scan_manager.c deleted file mode 100644 index a820b1b..0000000 --- a/arch/arm/cpu/armv7/socfpga/scan_manager.c +++ /dev/null @@ -1,209 +0,0 @@ -/* - * Copyright (C) 2013 Altera Corporation <www.altera.com> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <asm/io.h> -#include <asm/arch/freeze_controller.h> -#include <asm/arch/scan_manager.h> - -DECLARE_GLOBAL_DATA_PTR; - -static const struct socfpga_scan_manager *scan_manager_base = - (void *)(SOCFPGA_SCANMGR_ADDRESS); -static const struct socfpga_freeze_controller *freeze_controller_base = - (void *)(SOCFPGA_SYSMGR_ADDRESS + SYSMGR_FRZCTRL_ADDRESS); - -/* - * Function to check IO scan chain engine status and wait if the engine is - * is active. Poll the IO scan chain engine till maximum iteration reached. - */ -static inline uint32_t scan_chain_engine_is_idle(uint32_t max_iter) -{ - uint32_t scanmgr_status; - - scanmgr_status = readl(&scan_manager_base->stat); - - /* Poll the engine until the scan engine is inactive */ - while (SCANMGR_STAT_ACTIVE_GET(scanmgr_status) || - (SCANMGR_STAT_WFIFOCNT_GET(scanmgr_status) > 0)) { - max_iter--; - if (max_iter > 0) - scanmgr_status = readl(&scan_manager_base->stat); - else - return 0; - } - return 1; -} - -/* Program HPS IO Scan Chain */ -uint32_t scan_mgr_io_scan_chain_prg( - uint32_t io_scan_chain_id, - uint32_t io_scan_chain_len_in_bits, - const uint32_t *iocsr_scan_chain) -{ - uint16_t tdi_tdo_header; - uint32_t io_program_iter; - uint32_t io_scan_chain_data_residual; - uint32_t residual; - uint32_t i; - uint32_t index = 0; - - /* - * De-assert reinit if the IO scan chain is intended for HIO. In - * this, its the chain 3. - */ - if (io_scan_chain_id == 3) - clrbits_le32(&freeze_controller_base->hioctrl, - SYSMGR_FRZCTRL_HIOCTRL_DLLRST_MASK); - - /* - * Check if the scan chain engine is inactive and the - * WFIFO is empty before enabling the IO scan chain - */ - if (!scan_chain_engine_is_idle(SCAN_MAX_DELAY)) - return 1; - - /* - * Enable IO Scan chain based on scan chain id - * Note: only one chain can be enabled at a time - */ - setbits_le32(&scan_manager_base->en, 1 << io_scan_chain_id); - - /* - * Calculate number of iteration needed for full 128-bit (4 x32-bits) - * bits shifting. Each TDI_TDO packet can shift in maximum 128-bits - */ - io_program_iter = io_scan_chain_len_in_bits >> - IO_SCAN_CHAIN_128BIT_SHIFT; - io_scan_chain_data_residual = io_scan_chain_len_in_bits & - IO_SCAN_CHAIN_128BIT_MASK; - - /* Construct TDI_TDO packet for 128-bit IO scan chain (2 bytes) */ - tdi_tdo_header = TDI_TDO_HEADER_FIRST_BYTE | - (TDI_TDO_MAX_PAYLOAD << TDI_TDO_HEADER_SECOND_BYTE_SHIFT); - - /* Program IO scan chain in 128-bit iteration */ - for (i = 0; i < io_program_iter; i++) { - /* write TDI_TDO packet header to scan manager */ - writel(tdi_tdo_header, &scan_manager_base->fifo_double_byte); - - /* calculate array index. Multiply by 4 as write 4 x 32bits */ - index = i * 4; - - /* write 4 successive 32-bit IO scan chain data into WFIFO */ - writel(iocsr_scan_chain[index], - &scan_manager_base->fifo_quad_byte); - writel(iocsr_scan_chain[index + 1], - &scan_manager_base->fifo_quad_byte); - writel(iocsr_scan_chain[index + 2], - &scan_manager_base->fifo_quad_byte); - writel(iocsr_scan_chain[index + 3], - &scan_manager_base->fifo_quad_byte); - - /* - * Check if the scan chain engine has completed the - * IO scan chain data shifting - */ - if (!scan_chain_engine_is_idle(SCAN_MAX_DELAY)) - goto error; - } - - /* Calculate array index for final TDI_TDO packet */ - index = io_program_iter * 4; - - /* Final TDI_TDO packet if any */ - if (io_scan_chain_data_residual) { - /* - * Calculate number of quad bytes FIFO write - * needed for the final TDI_TDO packet - */ - io_program_iter = io_scan_chain_data_residual >> - IO_SCAN_CHAIN_32BIT_SHIFT; - - /* - * Construct TDI_TDO packet for remaining IO - * scan chain (2 bytes) - */ - tdi_tdo_header = TDI_TDO_HEADER_FIRST_BYTE | - ((io_scan_chain_data_residual - 1) << - TDI_TDO_HEADER_SECOND_BYTE_SHIFT); - - /* - * Program the last part of IO scan chain write TDI_TDO packet - * header (2 bytes) to scan manager - */ - writel(tdi_tdo_header, &scan_manager_base->fifo_double_byte); - - for (i = 0; i < io_program_iter; i++) { - /* - * write remaining scan chain data into scan - * manager WFIFO with 4 bytes write - */ - writel(iocsr_scan_chain[index + i], - &scan_manager_base->fifo_quad_byte); - } - - index += io_program_iter; - residual = io_scan_chain_data_residual & - IO_SCAN_CHAIN_32BIT_MASK; - - if (IO_SCAN_CHAIN_PAYLOAD_24BIT < residual) { - /* - * write the last 4B scan chain data - * into scan manager WFIFO - */ - writel(iocsr_scan_chain[index], - &scan_manager_base->fifo_quad_byte); - } else { - /* - * write the remaining 1 - 3 bytes scan chain - * data into scan manager WFIFO byte by byte - * to prevent JTAG engine shifting unused data - * from the FIFO and mistaken the data as a - * valid command (even though unused bits are - * set to 0, but just to prevent hardware - * glitch) - */ - for (i = 0; i < residual; i += 8) { - writel(((iocsr_scan_chain[index] >> i) - & IO_SCAN_CHAIN_BYTE_MASK), - &scan_manager_base->fifo_single_byte); - } - } - - /* - * Check if the scan chain engine has completed the - * IO scan chain data shifting - */ - if (!scan_chain_engine_is_idle(SCAN_MAX_DELAY)) - goto error; - } - - /* Disable IO Scan chain when configuration done*/ - clrbits_le32(&scan_manager_base->en, 1 << io_scan_chain_id); - return 0; - -error: - /* Disable IO Scan chain when error detected */ - clrbits_le32(&scan_manager_base->en, 1 << io_scan_chain_id); - return 1; -} - -int scan_mgr_configure_iocsr(void) -{ - int status = 0; - - /* configure the IOCSR through scan chain */ - status |= scan_mgr_io_scan_chain_prg(0, - CONFIG_HPS_IOCSR_SCANCHAIN0_LENGTH, iocsr_scan_chain0_table); - status |= scan_mgr_io_scan_chain_prg(1, - CONFIG_HPS_IOCSR_SCANCHAIN1_LENGTH, iocsr_scan_chain1_table); - status |= scan_mgr_io_scan_chain_prg(2, - CONFIG_HPS_IOCSR_SCANCHAIN2_LENGTH, iocsr_scan_chain2_table); - status |= scan_mgr_io_scan_chain_prg(3, - CONFIG_HPS_IOCSR_SCANCHAIN3_LENGTH, iocsr_scan_chain3_table); - return status; -} |