| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/ |
| * Dave Gerlach <d-gerlach@ti.com> |
| */ |
| |
| #include <common.h> |
| #include <dm.h> |
| #include <soc.h> |
| |
| #include <asm/io.h> |
| |
| #define AM65X 0xbb5a |
| #define J721E 0xbb64 |
| #define J7200 0xbb6d |
| #define AM64X 0xbb38 |
| #define J721S2 0xbb75 |
| #define AM62X 0xbb7e |
| |
| #define JTAG_ID_VARIANT_SHIFT 28 |
| #define JTAG_ID_VARIANT_MASK (0xf << 28) |
| #define JTAG_ID_PARTNO_SHIFT 12 |
| #define JTAG_ID_PARTNO_MASK (0xffff << 12) |
| |
| struct soc_ti_k3_plat { |
| const char *family; |
| const char *revision; |
| }; |
| |
| static const char *get_family_string(u32 idreg) |
| { |
| const char *family; |
| u32 soc; |
| |
| soc = (idreg & JTAG_ID_PARTNO_MASK) >> JTAG_ID_PARTNO_SHIFT; |
| |
| switch (soc) { |
| case AM65X: |
| family = "AM65X"; |
| break; |
| case J721E: |
| family = "J721E"; |
| break; |
| case J7200: |
| family = "J7200"; |
| break; |
| case AM64X: |
| family = "AM64X"; |
| break; |
| case J721S2: |
| family = "J721S2"; |
| break; |
| case AM62X: |
| family = "AM62X"; |
| break; |
| default: |
| family = "Unknown Silicon"; |
| }; |
| |
| return family; |
| } |
| |
| static char *j721e_rev_string_map[] = { |
| "1.0", "1.1", |
| }; |
| |
| static char *am65x_rev_string_map[] = { |
| "1.0", "2.0", |
| }; |
| |
| static const char *get_rev_string(u32 idreg) |
| { |
| u32 rev; |
| u32 soc; |
| |
| rev = (idreg & JTAG_ID_VARIANT_MASK) >> JTAG_ID_VARIANT_SHIFT; |
| soc = (idreg & JTAG_ID_PARTNO_MASK) >> JTAG_ID_PARTNO_SHIFT; |
| |
| switch (soc) { |
| case J721E: |
| if (rev > ARRAY_SIZE(j721e_rev_string_map)) |
| goto bail; |
| return j721e_rev_string_map[rev]; |
| |
| case AM65X: |
| if (rev > ARRAY_SIZE(am65x_rev_string_map)) |
| goto bail; |
| return am65x_rev_string_map[rev]; |
| |
| case AM64X: |
| case J7200: |
| default: |
| if (!rev) |
| return "1.0"; |
| }; |
| |
| bail: |
| return "Unknown Revision"; |
| } |
| |
| static int soc_ti_k3_get_family(struct udevice *dev, char *buf, int size) |
| { |
| struct soc_ti_k3_plat *plat = dev_get_plat(dev); |
| |
| snprintf(buf, size, "%s", plat->family); |
| |
| return 0; |
| } |
| |
| static int soc_ti_k3_get_revision(struct udevice *dev, char *buf, int size) |
| { |
| struct soc_ti_k3_plat *plat = dev_get_plat(dev); |
| |
| snprintf(buf, size, "SR%s", plat->revision); |
| |
| return 0; |
| } |
| |
| static const struct soc_ops soc_ti_k3_ops = { |
| .get_family = soc_ti_k3_get_family, |
| .get_revision = soc_ti_k3_get_revision, |
| }; |
| |
| int soc_ti_k3_probe(struct udevice *dev) |
| { |
| struct soc_ti_k3_plat *plat = dev_get_plat(dev); |
| u32 idreg; |
| void *idreg_addr; |
| |
| idreg_addr = dev_read_addr_ptr(dev); |
| if (!idreg_addr) |
| return -EINVAL; |
| |
| idreg = readl(idreg_addr); |
| |
| plat->family = get_family_string(idreg); |
| plat->revision = get_rev_string(idreg); |
| |
| return 0; |
| } |
| |
| static const struct udevice_id soc_ti_k3_ids[] = { |
| { .compatible = "ti,am654-chipid" }, |
| { } |
| }; |
| |
| U_BOOT_DRIVER(soc_ti_k3) = { |
| .name = "soc_ti_k3", |
| .id = UCLASS_SOC, |
| .ops = &soc_ti_k3_ops, |
| .of_match = soc_ti_k3_ids, |
| .probe = soc_ti_k3_probe, |
| .plat_auto = sizeof(struct soc_ti_k3_plat), |
| }; |