diff options
| -rw-r--r-- | arch/arm/mach-socfpga/misc_gen5.c | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/arch/arm/mach-socfpga/misc_gen5.c b/arch/arm/mach-socfpga/misc_gen5.c index dda95e8237..71547d81ab 100644 --- a/arch/arm/mach-socfpga/misc_gen5.c +++ b/arch/arm/mach-socfpga/misc_gen5.c @@ -210,35 +210,6 @@ static struct socfpga_reset_manager *reset_manager_base = static struct socfpga_sdr_ctrl *sdr_ctrl = (struct socfpga_sdr_ctrl *)SDR_CTRLGRP_ADDRESS; -static void socfpga_sdram_apply_static_cfg(void) -{ - const u32 applymask = 0x8; - u32 val = readl(&sdr_ctrl->static_cfg) | applymask; - - /* - * SDRAM staticcfg register specific: - * When applying the register setting, the CPU must not access - * SDRAM. Luckily for us, we can abuse i-cache here to help us - * circumvent the SDRAM access issue. The idea is to make sure - * that the code is in one full i-cache line by branching past - * it and back. Once it is in the i-cache, we execute the core - * of the code and apply the register settings. - * - * The code below uses 7 instructions, while the Cortex-A9 has - * 32-byte cachelines, thus the limit is 8 instructions total. - */ - asm volatile( - ".align 5 \n" - " b 2f \n" - "1: str %0, [%1] \n" - " dsb \n" - " isb \n" - " b 3f \n" - "2: b 1b \n" - "3: nop \n" - : : "r"(val), "r"(&sdr_ctrl->static_cfg) : "memory", "cc"); -} - void do_bridge_reset(int enable, unsigned int mask) { int i; @@ -253,14 +224,12 @@ void do_bridge_reset(int enable, unsigned int mask) } writel(iswgrp_handoff[2], &sysmgr_regs->fpgaintfgrp_module); - socfpga_sdram_apply_static_cfg(); writel(iswgrp_handoff[3], &sdr_ctrl->fpgaport_rst); writel(iswgrp_handoff[0], &reset_manager_base->brg_mod_reset); writel(iswgrp_handoff[1], &nic301_regs->remap); } else { writel(0, &sysmgr_regs->fpgaintfgrp_module); writel(0, &sdr_ctrl->fpgaport_rst); - socfpga_sdram_apply_static_cfg(); writel(0, &reset_manager_base->brg_mod_reset); writel(1, &nic301_regs->remap); } |