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https://github.com/riscv-software-src/opensbi.git
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Nicholas Piggin
6767861c48
Add the Tenstorrent Atlantis as a generic-platform. This initial support enables the single_fw_region option, and verifies and prints HART PMA CSR configuration. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Reviewed-by: Anup Patel <anup@brainfault.org> Link: https://lore.kernel.org/r/20260424062520.238403-1-npiggin@gmail.com Signed-off-by: Anup Patel <anup@brainfault.org>
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
/*
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* SPDX-FileCopyrightText: (c) 2025-2026 Tenstorrent USA, Inc.
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <sbi/riscv_asm.h>
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#include <sbi/sbi_console.h>
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#include <sbi/sbi_csr_detect.h>
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#include <tenstorrent/ascalon.h>
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#include <tenstorrent/pma.h>
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#define CSR_PMACFG0 0x7e0
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void tt_ascalon_discover_pmas_from_boot_hart(void)
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{
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struct sbi_trap_info trap = {0};
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/* Whisper virtual platform does not implement PMA */
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csr_read_allowed(CSR_PMACFG0, &trap);
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if (trap.cause)
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return;
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for (unsigned int i = 0; i < TT_MAX_PMAS; i++) {
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u64 pma = csr_read_num(CSR_PMACFG0 + i);
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if (!tt_pma_validate(i, pma)) {
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sbi_printf("HART%d: Bad boot PMA%02d 0x%016lx\n",
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current_hartid(), i, pma);
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}
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tt_pma_set(i, pma);
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if (pma)
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tt_pma_print(i, pma);
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}
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}
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void tt_ascalon_verify_pmas_nonboot_hart(void)
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{
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struct sbi_trap_info trap = {0};
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/* Whisper virtual platform does not implement PMA */
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csr_read_allowed(CSR_PMACFG0, &trap);
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if (trap.cause)
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return;
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for (unsigned int i = 0; i < TT_MAX_PMAS; i++) {
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u64 pma = csr_read_num(CSR_PMACFG0 + i);
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if (pma != tt_pma_get(i)) {
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sbi_printf("HART%d: Bad boot PMA%02d 0x%016lx does not match boot HART\n",
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current_hartid(), i, pma);
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}
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}
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}
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