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| author | Bin Meng <bmeng.cn@gmail.com> | 2019-03-27 17:58:49 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2019-03-29 13:19:11 +0300 |
| commit | f9cfe301c92aede87e46069e66e250d4039e413e (patch) | |
| tree | 9ad888e9926a14a20ba6b3d291ff9e8f8f056dcc | |
| parent | 215c200ccbf39d834dfb64771c8fa5a06ad5b4e0 (diff) | |
| download | opensbi-f9cfe301c92aede87e46069e66e250d4039e413e.tar.xz | |
lib: Disable the boot prints if SBI_SCRATCH_NO_BOOT_PRINTS is set
Use the newly introduced "options" in "struct sbi_scratch" to
conditionally disable the boot prints.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
| -rw-r--r-- | docs/firmware/fw.md | 15 | ||||
| -rw-r--r-- | include/sbi/sbi_scratch.h | 6 | ||||
| -rw-r--r-- | lib/sbi_init.c | 3 |
3 files changed, 23 insertions, 1 deletions
diff --git a/docs/firmware/fw.md b/docs/firmware/fw.md index acff4a6..8ca54b6 100644 --- a/docs/firmware/fw.md +++ b/docs/firmware/fw.md @@ -75,3 +75,18 @@ make PLATFORM=<platform_subdir> FW_PAYLOAD_PATH=<payload path> The instructions to build each payload is different and the details can be found in the *docs/firmware/payload_<payload_name>.md* files. + +Options for OpenSBI Firmware behaviors +-------------------------------------- +An optional compile time flag FW_OPTIONS can be used to control the OpenSBI +firmware run-time behaviors. + +``` +make PLATFORM=<platform_subdir> FW_OPTIONS=<options> +``` + +FW_OPTIONS is a bitwise or'ed value of various options, eg: *FW_OPTIONS=0x1* +stands for disabling boot prints from the OpenSBI library. + +For all supported options, please check "enum sbi_scratch_options" in the +*include/sbi/sbi_scratch.h* header file. diff --git a/include/sbi/sbi_scratch.h b/include/sbi/sbi_scratch.h index 4cba233..759e564 100644 --- a/include/sbi/sbi_scratch.h +++ b/include/sbi/sbi_scratch.h @@ -70,6 +70,12 @@ struct sbi_scratch { unsigned long options; } __packed; +/** Possible options for OpenSBI library */ +enum sbi_scratch_options { + /** Disable prints during boot */ + SBI_SCRATCH_NO_BOOT_PRINTS = (1 << 0), +}; + /** Get pointer to sbi_scratch for current HART */ #define sbi_scratch_thishart_ptr() \ ((struct sbi_scratch *)csr_read(CSR_MSCRATCH)) diff --git a/lib/sbi_init.c b/lib/sbi_init.c index bc27436..32ad822 100644 --- a/lib/sbi_init.c +++ b/lib/sbi_init.c @@ -91,7 +91,8 @@ static void __noreturn init_coldboot(struct sbi_scratch *scratch, u32 hartid) if (rc) sbi_hart_hang(); - sbi_boot_prints(scratch, hartid); + if (!(scratch->options & SBI_SCRATCH_NO_BOOT_PRINTS)) + sbi_boot_prints(scratch, hartid); if (!sbi_platform_has_hart_hotplug(plat)) sbi_hart_wake_coldboot_harts(scratch, hartid); |