diff options
Diffstat (limited to '')
| -rw-r--r-- | plat/brcm/board/stingray/src/paxc.c | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/plat/brcm/board/stingray/src/paxc.c b/plat/brcm/board/stingray/src/paxc.c new file mode 100644 index 0000000..44af4b0 --- /dev/null +++ b/plat/brcm/board/stingray/src/paxc.c @@ -0,0 +1,267 @@ +/* + * Copyright (c) 2017 - 2020, Broadcom + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <common/debug.h> +#include <lib/mmio.h> + +#include <iommu.h> +#include <platform_def.h> +#include <sr_utils.h> + +#define PAXC_BASE 0x60400000 +#define PAXC_AXI_CFG_PF 0x10 +#define PAXC_AXI_CFG_PF_OFFSET(pf) (PAXC_AXI_CFG_PF + (pf) * 4) +#define PAXC_ARPROT_PF_CFG 0x40 +#define PAXC_AWPROT_PF_CFG 0x44 + +#define PAXC_ARQOS_PF_CFG 0x48 +#define PAXC_ARQOS_VAL 0xaaaaaaaa + +#define PAXC_AWQOS_PF_CFG 0x4c +#define PAXC_AWQOS_VAL 0xeeeeeeee + +#define PAXC_CFG_IND_ADDR_OFFSET 0x1f0 +#define PAXC_CFG_IND_ADDR_MASK 0xffc +#define PAXC_CFG_IND_DATA_OFFSET 0x1f4 + +/* offsets for PAXC root complex configuration space registers */ + +#define PAXC_CFG_ID_OFFSET 0x434 +#define PAXC_RC_VENDOR_ID 0x14e4 +#define PAXC_RC_VENDOR_ID_SHIFT 16 + +#define PAXC_RC_DEVICE_ID 0xd750 + +#define PAXC_CFG_LINK_CAP_OFFSET 0x4dc +#define PAXC_RC_LINK_CAP_SPD_SHIFT 0 +#define PAXC_RC_LINK_CAP_SPD_MASK (0xf << PAXC_RC_LINK_CAP_SPD_SHIFT) +#define PAXC_RC_LINK_CAP_SPD 3 +#define PAXC_RC_LINK_CAP_WIDTH_SHIFT 4 +#define PAXC_RC_LINK_CAP_WIDTH_MASK (0x1f << PAXC_RC_LINK_CAP_WIDTH_SHIFT) +#define PAXC_RC_LINK_CAP_WIDTH 16 + +/* offsets for MHB registers */ + +#define MHB_BASE 0x60401000 +#define MHB_MEM_PWR_STATUS_PAXC (MHB_BASE + 0x1c0) +#define MHB_PWR_ARR_POWERON 0x8 +#define MHB_PWR_ARR_POWEROK 0x4 +#define MHB_PWR_POWERON 0x2 +#define MHB_PWR_POWEROK 0x1 +#define MHB_PWR_STATUS_MASK (MHB_PWR_ARR_POWERON | \ + MHB_PWR_ARR_POWEROK | \ + MHB_PWR_POWERON | \ + MHB_PWR_POWEROK) + +/* max number of PFs from Nitro that PAXC sees */ +#define MAX_NR_NITRO_PF 8 + +#ifdef EMULATION_SETUP +static void paxc_reg_dump(void) +{ +} +#else +/* total number of PAXC registers */ +#define NR_PAXC_REGS 53 +static void paxc_reg_dump(void) +{ + uint32_t idx, offset = 0; + + VERBOSE("PAXC register dump start\n"); + for (idx = 0; idx < NR_PAXC_REGS; idx++, offset += 4) + VERBOSE("offset: 0x%x val: 0x%x\n", offset, + mmio_read_32(PAXC_BASE + offset)); + VERBOSE("PAXC register dump end\n"); +} +#endif /* EMULATION_SETUP */ + +#ifdef EMULATION_SETUP +static void mhb_reg_dump(void) +{ +} +#else +#define NR_MHB_REGS 227 +static void mhb_reg_dump(void) +{ + uint32_t idx, offset = 0; + + VERBOSE("MHB register dump start\n"); + for (idx = 0; idx < NR_MHB_REGS; idx++, offset += 4) + VERBOSE("offset: 0x%x val: 0x%x\n", offset, + mmio_read_32(MHB_BASE + offset)); + VERBOSE("MHB register dump end\n"); +} +#endif /* EMULATION_SETUP */ + +static void paxc_rc_cfg_write(uint32_t where, uint32_t val) +{ + mmio_write_32(PAXC_BASE + PAXC_CFG_IND_ADDR_OFFSET, + where & PAXC_CFG_IND_ADDR_MASK); + mmio_write_32(PAXC_BASE + PAXC_CFG_IND_DATA_OFFSET, val); +} + +static uint32_t paxc_rc_cfg_read(uint32_t where) +{ + mmio_write_32(PAXC_BASE + PAXC_CFG_IND_ADDR_OFFSET, + where & PAXC_CFG_IND_ADDR_MASK); + return mmio_read_32(PAXC_BASE + PAXC_CFG_IND_DATA_OFFSET); +} + +/* + * Function to program PAXC root complex link capability register + */ +static void paxc_cfg_link_cap(void) +{ + uint32_t val; + + val = paxc_rc_cfg_read(PAXC_CFG_LINK_CAP_OFFSET); + val &= ~(PAXC_RC_LINK_CAP_SPD_MASK | PAXC_RC_LINK_CAP_WIDTH_MASK); + val |= (PAXC_RC_LINK_CAP_SPD << PAXC_RC_LINK_CAP_SPD_SHIFT) | + (PAXC_RC_LINK_CAP_WIDTH << PAXC_RC_LINK_CAP_WIDTH_SHIFT); + paxc_rc_cfg_write(PAXC_CFG_LINK_CAP_OFFSET, val); +} + +/* + * Function to program PAXC root complex vendor ID and device ID + */ +static void paxc_cfg_id(void) +{ + uint32_t val; + + val = (PAXC_RC_VENDOR_ID << PAXC_RC_VENDOR_ID_SHIFT) | + PAXC_RC_DEVICE_ID; + paxc_rc_cfg_write(PAXC_CFG_ID_OFFSET, val); +} + +void paxc_init(void) +{ + unsigned int pf_index; + unsigned int val; + + val = mmio_read_32(MHB_MEM_PWR_STATUS_PAXC); + if ((val & MHB_PWR_STATUS_MASK) != MHB_PWR_STATUS_MASK) { + INFO("PAXC not powered\n"); + return; + } + + paxc_cfg_id(); + paxc_cfg_link_cap(); + + paxc_reg_dump(); + mhb_reg_dump(); + +#ifdef USE_DDR + /* + * Set AWCACHE and ARCACHE to 0xff (Cacheable write-back, + * allocate on both reads and writes) per + * recommendation from the ASIC team + */ + val = 0xff; +#else + /* disable IO cache if non-DDR memory is used, e.g., external SRAM */ + val = 0x0; +#endif + for (pf_index = 0; pf_index < MAX_NR_NITRO_PF; pf_index++) + mmio_write_32(PAXC_BASE + PAXC_AXI_CFG_PF_OFFSET(pf_index), + val); + + /* + * Set ARPROT and AWPROT to enable non-secure access from + * PAXC to all PFs, PF0 to PF7 + */ + mmio_write_32(PAXC_BASE + PAXC_ARPROT_PF_CFG, 0x22222222); + mmio_write_32(PAXC_BASE + PAXC_AWPROT_PF_CFG, 0x22222222); + + mmio_write_32(PAXC_BASE + PAXC_ARQOS_PF_CFG, PAXC_ARQOS_VAL); + mmio_write_32(PAXC_BASE + PAXC_AWQOS_PF_CFG, PAXC_AWQOS_VAL); + + INFO("PAXC init done\n"); +} + +/* + * These defines do not match the regfile but they are renamed in a way such + * that they are much more readible + */ + +#define MHB_NIC_SECURITY_BASE 0x60500000 +#define MHB_NIC_PAXC_AXI_NS 0x0008 +#define MHB_NIC_IDM_NS 0x000c +#define MHB_NIC_MHB_APB_NS 0x0010 +#define MHB_NIC_NITRO_AXI_NS 0x0014 +#define MHB_NIC_PCIE_AXI_NS 0x0018 +#define MHB_NIC_PAXC_APB_NS 0x001c +#define MHB_NIC_EP_APB_NS 0x0020 + +#define MHB_NIC_PAXC_APB_S_IDM_SHIFT 5 +#define MHB_NIC_EP_APB_S_IDM_SHIFT 4 +#define MHB_NIC_MHB_APB_S_IDM_SHIFT 3 +#define MHB_NIC_PAXC_AXI_S_IDM_SHIFT 2 +#define MHB_NIC_PCIE_AXI_S_IDM_SHIFT 1 +#define MHB_NIC_NITRO_AXI_S_IDM_SHIFT 0 + +#define NIC400_NITRO_TOP_NIC_SECURITY_BASE 0x60d00000 + +#define NITRO_NIC_SECURITY_3_SHIFT 0x14 +#define NITRO_NIC_SECURITY_4_SHIFT 0x18 +#define NITRO_NIC_SECURITY_5_SHIFT 0x1c +#define NITRO_NIC_SECURITY_6_SHIFT 0x20 + +void paxc_mhb_ns_init(void) +{ + unsigned int val; + uintptr_t mhb_nic_gpv = MHB_NIC_SECURITY_BASE; +#ifndef NITRO_SECURE_ACCESS + uintptr_t nic400_nitro_gpv = NIC400_NITRO_TOP_NIC_SECURITY_BASE; +#endif /* NITRO_SECURE_ACCESS */ + + /* set PAXC AXI to allow non-secure access */ + val = mmio_read_32(mhb_nic_gpv + MHB_NIC_PAXC_AXI_NS); + val |= 0x1; + mmio_write_32(mhb_nic_gpv + MHB_NIC_PAXC_AXI_NS, val); + + /* set various MHB IDM interfaces to allow non-secure access */ + val = mmio_read_32(mhb_nic_gpv + MHB_NIC_IDM_NS); + val |= (0x1 << MHB_NIC_PAXC_APB_S_IDM_SHIFT); + val |= (0x1 << MHB_NIC_EP_APB_S_IDM_SHIFT); + val |= (0x1 << MHB_NIC_MHB_APB_S_IDM_SHIFT); + val |= (0x1 << MHB_NIC_PAXC_AXI_S_IDM_SHIFT); + val |= (0x1 << MHB_NIC_PCIE_AXI_S_IDM_SHIFT); + val |= (0x1 << MHB_NIC_NITRO_AXI_S_IDM_SHIFT); + mmio_write_32(mhb_nic_gpv + MHB_NIC_IDM_NS, val); + + /* set MHB APB to allow non-secure access */ + val = mmio_read_32(mhb_nic_gpv + MHB_NIC_MHB_APB_NS); + val |= 0x1; + mmio_write_32(mhb_nic_gpv + MHB_NIC_MHB_APB_NS, val); + + /* set Nitro AXI to allow non-secure access */ + val = mmio_read_32(mhb_nic_gpv + MHB_NIC_NITRO_AXI_NS); + val |= 0x1; + mmio_write_32(mhb_nic_gpv + MHB_NIC_NITRO_AXI_NS, val); + + /* set PCIe AXI to allow non-secure access */ + val = mmio_read_32(mhb_nic_gpv + MHB_NIC_PCIE_AXI_NS); + val |= 0x1; + mmio_write_32(mhb_nic_gpv + MHB_NIC_PCIE_AXI_NS, val); + + /* set PAXC APB to allow non-secure access */ + val = mmio_read_32(mhb_nic_gpv + MHB_NIC_PAXC_APB_NS); + val |= 0x1; + mmio_write_32(mhb_nic_gpv + MHB_NIC_PAXC_APB_NS, val); + + /* set EP APB to allow non-secure access */ + val = mmio_read_32(mhb_nic_gpv + MHB_NIC_EP_APB_NS); + val |= 0x1; + mmio_write_32(mhb_nic_gpv + MHB_NIC_EP_APB_NS, val); + +#ifndef NITRO_SECURE_ACCESS + /* Set NIC400 to allow non-secure access */ + mmio_setbits_32(nic400_nitro_gpv + NITRO_NIC_SECURITY_3_SHIFT, 0x1); + mmio_setbits_32(nic400_nitro_gpv + NITRO_NIC_SECURITY_4_SHIFT, 0x1); + mmio_setbits_32(nic400_nitro_gpv + NITRO_NIC_SECURITY_5_SHIFT, 0x1); + mmio_setbits_32(nic400_nitro_gpv + NITRO_NIC_SECURITY_6_SHIFT, 0x1); +#endif /* NITRO_SECURE_ACCESS */ +} |