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-rw-r--r--roms/u-boot/arch/arm/mach-socfpga/reset_manager_arria10.c245
1 files changed, 245 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/mach-socfpga/reset_manager_arria10.c b/roms/u-boot/arch/arm/mach-socfpga/reset_manager_arria10.c
new file mode 100644
index 000000000..27c030801
--- /dev/null
+++ b/roms/u-boot/arch/arm/mach-socfpga/reset_manager_arria10.c
@@ -0,0 +1,245 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2016-2017 Intel Corporation
+ */
+
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <asm/arch/fpga_manager.h>
+#include <asm/arch/misc.h>
+#include <asm/arch/reset_manager.h>
+#include <asm/arch/system_manager.h>
+#include <common.h>
+#include <errno.h>
+#include <fdtdec.h>
+#include <wait_bit.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct bridge_cfg {
+ int compat_id;
+ u32 mask_noc;
+ u32 mask_rstmgr;
+};
+
+static const struct bridge_cfg bridge_cfg_tbl[] = {
+ {
+ COMPAT_ALTERA_SOCFPGA_H2F_BRG,
+ ALT_SYSMGR_NOC_H2F_SET_MSK,
+ ALT_RSTMGR_BRGMODRST_H2F_SET_MSK,
+ },
+ {
+ COMPAT_ALTERA_SOCFPGA_LWH2F_BRG,
+ ALT_SYSMGR_NOC_LWH2F_SET_MSK,
+ ALT_RSTMGR_BRGMODRST_LWH2F_SET_MSK,
+ },
+ {
+ COMPAT_ALTERA_SOCFPGA_F2H_BRG,
+ ALT_SYSMGR_NOC_F2H_SET_MSK,
+ ALT_RSTMGR_BRGMODRST_F2H_SET_MSK,
+ },
+ {
+ COMPAT_ALTERA_SOCFPGA_F2SDR0,
+ ALT_SYSMGR_NOC_F2SDR0_SET_MSK,
+ ALT_RSTMGR_BRGMODRST_F2SSDRAM0_SET_MSK,
+ },
+ {
+ COMPAT_ALTERA_SOCFPGA_F2SDR1,
+ ALT_SYSMGR_NOC_F2SDR1_SET_MSK,
+ ALT_RSTMGR_BRGMODRST_F2SSDRAM1_SET_MSK,
+ },
+ {
+ COMPAT_ALTERA_SOCFPGA_F2SDR2,
+ ALT_SYSMGR_NOC_F2SDR2_SET_MSK,
+ ALT_RSTMGR_BRGMODRST_F2SSDRAM2_SET_MSK,
+ },
+};
+
+/* Disable the watchdog (toggle reset to watchdog) */
+void socfpga_watchdog_disable(void)
+{
+ /* assert reset for watchdog */
+ setbits_le32(socfpga_get_rstmgr_addr() + RSTMGR_A10_PER1MODRST,
+ ALT_RSTMGR_PER1MODRST_WD0_SET_MSK);
+}
+
+/* Release NOC ddr scheduler from reset */
+void socfpga_reset_deassert_noc_ddr_scheduler(void)
+{
+ clrbits_le32(socfpga_get_rstmgr_addr() + RSTMGR_A10_BRGMODRST,
+ ALT_RSTMGR_BRGMODRST_DDRSCH_SET_MSK);
+}
+
+static int get_bridge_init_val(const void *blob, int compat_id)
+{
+ int node;
+
+ node = fdtdec_next_compatible(blob, 0, compat_id);
+ if (node < 0)
+ return 0;
+
+ return fdtdec_get_uint(blob, node, "init-val", 0);
+}
+
+/* Enable bridges (hps2fpga, lwhps2fpga, fpga2hps, fpga2sdram) per handoff */
+int socfpga_reset_deassert_bridges_handoff(void)
+{
+ u32 mask_noc = 0, mask_rstmgr = 0;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(bridge_cfg_tbl); i++) {
+ if (get_bridge_init_val(gd->fdt_blob,
+ bridge_cfg_tbl[i].compat_id)) {
+ mask_noc |= bridge_cfg_tbl[i].mask_noc;
+ mask_rstmgr |= bridge_cfg_tbl[i].mask_rstmgr;
+ }
+ }
+
+ /* clear idle request to all bridges */
+ setbits_le32(socfpga_get_sysmgr_addr() + SYSMGR_A10_NOC_IDLEREQ_CLR,
+ mask_noc);
+
+ /* Release bridges from reset state per handoff value */
+ clrbits_le32(socfpga_get_rstmgr_addr() + RSTMGR_A10_BRGMODRST,
+ mask_rstmgr);
+
+ /* Poll until all idleack to 0, timeout at 1000ms */
+ return wait_for_bit_le32((const void *)(socfpga_get_sysmgr_addr() +
+ SYSMGR_A10_NOC_IDLEACK),
+ mask_noc, false, 1000, false);
+}
+
+/* Release L4 OSC1 Watchdog Timer 0 from reset through reset manager */
+void socfpga_reset_deassert_osc1wd0(void)
+{
+ clrbits_le32(socfpga_get_rstmgr_addr() + RSTMGR_A10_PER1MODRST,
+ ALT_RSTMGR_PER1MODRST_WD0_SET_MSK);
+}
+
+/*
+ * Assert or de-assert SoCFPGA reset manager reset.
+ */
+void socfpga_per_reset(u32 reset, int set)
+{
+ unsigned long reg;
+ u32 rstmgr_bank = RSTMGR_BANK(reset);
+
+ switch (rstmgr_bank) {
+ case 0:
+ reg = RSTMGR_A10_MPUMODRST;
+ break;
+ case 1:
+ reg = RSTMGR_A10_PER0MODRST;
+ break;
+ case 2:
+ reg = RSTMGR_A10_PER1MODRST;
+ break;
+ case 3:
+ reg = RSTMGR_A10_BRGMODRST;
+ break;
+ case 4:
+ reg = RSTMGR_A10_SYSMODRST;
+ break;
+
+ default:
+ return;
+ }
+
+ if (set)
+ setbits_le32(socfpga_get_rstmgr_addr() + reg,
+ 1 << RSTMGR_RESET(reset));
+ else
+ clrbits_le32(socfpga_get_rstmgr_addr() + reg,
+ 1 << RSTMGR_RESET(reset));
+}
+
+/*
+ * Assert reset on every peripheral but L4WD0.
+ * Watchdog must be kept intact to prevent glitches
+ * and/or hangs.
+ * For the Arria10, we disable all the peripherals except L4 watchdog0,
+ * L4 Timer 0, and ECC.
+ */
+void socfpga_per_reset_all(void)
+{
+ const u32 l4wd0 = (1 << RSTMGR_RESET(SOCFPGA_RESET(L4WD0)) |
+ (1 << RSTMGR_RESET(SOCFPGA_RESET(L4SYSTIMER0))));
+ unsigned mask_ecc_ocp =
+ ALT_RSTMGR_PER0MODRST_EMACECC0_SET_MSK |
+ ALT_RSTMGR_PER0MODRST_EMACECC1_SET_MSK |
+ ALT_RSTMGR_PER0MODRST_EMACECC2_SET_MSK |
+ ALT_RSTMGR_PER0MODRST_USBECC0_SET_MSK |
+ ALT_RSTMGR_PER0MODRST_USBECC1_SET_MSK |
+ ALT_RSTMGR_PER0MODRST_NANDECC_SET_MSK |
+ ALT_RSTMGR_PER0MODRST_QSPIECC_SET_MSK |
+ ALT_RSTMGR_PER0MODRST_SDMMCECC_SET_MSK;
+
+ /* disable all components except ECC_OCP, L4 Timer0 and L4 WD0 */
+ writel(~l4wd0, socfpga_get_rstmgr_addr() + RSTMGR_A10_PER1MODRST);
+ setbits_le32(socfpga_get_rstmgr_addr() + RSTMGR_A10_PER0MODRST,
+ ~mask_ecc_ocp);
+
+ /* Finally disable the ECC_OCP */
+ setbits_le32(socfpga_get_rstmgr_addr() + RSTMGR_A10_PER0MODRST,
+ mask_ecc_ocp);
+}
+
+int socfpga_bridges_reset(void)
+{
+ int ret;
+
+ /* Disable all the bridges (hps2fpga, lwhps2fpga, fpga2hps,
+ fpga2sdram) */
+ /* set idle request to all bridges */
+ writel(ALT_SYSMGR_NOC_H2F_SET_MSK |
+ ALT_SYSMGR_NOC_LWH2F_SET_MSK |
+ ALT_SYSMGR_NOC_F2H_SET_MSK |
+ ALT_SYSMGR_NOC_F2SDR0_SET_MSK |
+ ALT_SYSMGR_NOC_F2SDR1_SET_MSK |
+ ALT_SYSMGR_NOC_F2SDR2_SET_MSK,
+ socfpga_get_sysmgr_addr() + SYSMGR_A10_NOC_IDLEREQ_SET);
+
+ /* Enable the NOC timeout */
+ writel(ALT_SYSMGR_NOC_TMO_EN_SET_MSK,
+ socfpga_get_sysmgr_addr() + SYSMGR_A10_NOC_TIMEOUT);
+
+ /* Poll until all idleack to 1 */
+ ret = wait_for_bit_le32((const void *)(socfpga_get_sysmgr_addr() +
+ SYSMGR_A10_NOC_IDLEACK),
+ ALT_SYSMGR_NOC_H2F_SET_MSK |
+ ALT_SYSMGR_NOC_LWH2F_SET_MSK |
+ ALT_SYSMGR_NOC_F2H_SET_MSK |
+ ALT_SYSMGR_NOC_F2SDR0_SET_MSK |
+ ALT_SYSMGR_NOC_F2SDR1_SET_MSK |
+ ALT_SYSMGR_NOC_F2SDR2_SET_MSK,
+ true, 10000, false);
+ if (ret)
+ return ret;
+
+ /* Poll until all idlestatus to 1 */
+ ret = wait_for_bit_le32((const void *)(socfpga_get_sysmgr_addr() +
+ SYSMGR_A10_NOC_IDLESTATUS),
+ ALT_SYSMGR_NOC_H2F_SET_MSK |
+ ALT_SYSMGR_NOC_LWH2F_SET_MSK |
+ ALT_SYSMGR_NOC_F2H_SET_MSK |
+ ALT_SYSMGR_NOC_F2SDR0_SET_MSK |
+ ALT_SYSMGR_NOC_F2SDR1_SET_MSK |
+ ALT_SYSMGR_NOC_F2SDR2_SET_MSK,
+ true, 10000, false);
+ if (ret)
+ return ret;
+
+ /* Put all bridges (except NOR DDR scheduler) into reset state */
+ setbits_le32(socfpga_get_rstmgr_addr() + RSTMGR_A10_BRGMODRST,
+ (ALT_RSTMGR_BRGMODRST_H2F_SET_MSK |
+ ALT_RSTMGR_BRGMODRST_LWH2F_SET_MSK |
+ ALT_RSTMGR_BRGMODRST_F2H_SET_MSK |
+ ALT_RSTMGR_BRGMODRST_F2SSDRAM0_SET_MSK |
+ ALT_RSTMGR_BRGMODRST_F2SSDRAM1_SET_MSK |
+ ALT_RSTMGR_BRGMODRST_F2SSDRAM2_SET_MSK));
+
+ /* Disable NOC timeout */
+ writel(0, socfpga_get_sysmgr_addr() + SYSMGR_A10_NOC_TIMEOUT);
+
+ return 0;
+}