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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:13:47 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:13:47 +0000 |
commit | 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 (patch) | |
tree | bcf648efac40ca6139842707f0eba5a4496a6dd2 /lib/extensions/ras/std_err_record.c | |
parent | Initial commit. (diff) | |
download | arm-trusted-firmware-upstream.tar.xz arm-trusted-firmware-upstream.zip |
Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | lib/extensions/ras/std_err_record.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/lib/extensions/ras/std_err_record.c b/lib/extensions/ras/std_err_record.c new file mode 100644 index 0000000..c03fbbe --- /dev/null +++ b/lib/extensions/ras/std_err_record.c @@ -0,0 +1,79 @@ +/* + * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <lib/extensions/ras_arch.h> +#include <lib/utils_def.h> + +/* + * Probe for error in memory-mapped registers containing error records + * implemented Standard Error Record format. Upon detecting an error, set probe + * data to the index of the record in error, and return 1; otherwise, return 0. + */ +int ser_probe_memmap(uintptr_t base, unsigned int size_num_k, int *probe_data) +{ + unsigned int num_records, num_group_regs, i; + uint64_t gsr; + + assert(base != 0UL); + + /* Only 4K supported for now */ + assert(size_num_k == STD_ERR_NODE_SIZE_NUM_K); + + num_records = (unsigned int) + (mmio_read_32(ERR_DEVID(base, size_num_k)) & ERR_DEVID_MASK); + + /* A group register shows error status for 2^6 error records */ + num_group_regs = (num_records >> 6U) + 1U; + + /* Iterate through group registers to find a record in error */ + for (i = 0; i < num_group_regs; i++) { + gsr = mmio_read_64(ERR_GSR(base, size_num_k, i)); + if (gsr == 0ULL) + continue; + + /* Return the index of the record in error */ + if (probe_data != NULL) + *probe_data = (((int) (i << 6U)) + __builtin_ctzll(gsr)); + + return 1; + } + + return 0; +} + +/* + * Probe for error in System Registers where error records are implemented in + * Standard Error Record format. Upon detecting an error, set probe data to the + * index of the record in error, and return 1; otherwise, return 0. + */ +int ser_probe_sysreg(unsigned int idx_start, unsigned int num_idx, int *probe_data) +{ + unsigned int i; + uint64_t status; + unsigned int max_idx __unused = + ((unsigned int) read_erridr_el1()) & ERRIDR_MASK; + + assert(idx_start < max_idx); + assert(check_u32_overflow(idx_start, num_idx) == 0); + assert((idx_start + num_idx - 1U) < max_idx); + + for (i = 0; i < num_idx; i++) { + /* Select the error record */ + ser_sys_select_record(idx_start + i); + + /* Retrieve status register from the error record */ + status = read_erxstatus_el1(); + + /* Check for valid field in status */ + if (ERR_STATUS_GET_FIELD(status, V) != 0U) { + if (probe_data != NULL) + *probe_data = (int) i; + return 1; + } + } + + return 0; +} |