From: Sascha Hauer <sha@pengutronix.de>
To: Michael Olbrich <m.olbrich@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH 1/2] efi: add more helper functions to write EFI variables
Date: Wed, 13 Dec 2023 07:47:41 +0100 [thread overview]
Message-ID: <20231213064741.GG1318922@pengutronix.de> (raw)
In-Reply-To: <20231206131145.3096043-1-m.olbrich@pengutronix.de>
On Wed, Dec 06, 2023 at 02:11:44PM +0100, Michael Olbrich wrote:
> Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
> ---
> common/efi/payload/init.c | 38 ++++++++++++++++++++++++++++++++++++++
> 1 file changed, 38 insertions(+)
Applied, thanks
Sascha
>
> diff --git a/common/efi/payload/init.c b/common/efi/payload/init.c
> index b990b54b2678..19be7ff07fb6 100644
> --- a/common/efi/payload/init.c
> +++ b/common/efi/payload/init.c
> @@ -107,6 +107,44 @@ int efi_set_variable_usec(char *name, efi_guid_t *vendor, uint64_t usec)
> (strlen(buf)+1) * sizeof(wchar_t));
> }
>
> +static int efi_set_variable_printf(char *name, efi_guid_t *vendor, const char *fmt, ...)
> +{
> + va_list args;
> + char *buf;
> + wchar_t *buf16;
> +
> + va_start(args, fmt);
> + buf = xvasprintf(fmt, args);
> + va_end(args);
> + buf16 = xstrdup_char_to_wchar(buf);
> +
> + return efi_set_variable(name, vendor,
> + EFI_VARIABLE_BOOTSERVICE_ACCESS |
> + EFI_VARIABLE_RUNTIME_ACCESS, buf16,
> + (strlen(buf)+1) * sizeof(wchar_t));
> + free(buf);
> + free(buf16);
> +}
> +
> +static int efi_set_variable_uint64_le(char *name, efi_guid_t *vendor, uint64_t value)
> +{
> + uint8_t buf[8];
> +
> + buf[0] = (uint8_t)(value >> 0U & 0xFF);
> + buf[1] = (uint8_t)(value >> 8U & 0xFF);
> + buf[2] = (uint8_t)(value >> 16U & 0xFF);
> + buf[3] = (uint8_t)(value >> 24U & 0xFF);
> + buf[4] = (uint8_t)(value >> 32U & 0xFF);
> + buf[5] = (uint8_t)(value >> 40U & 0xFF);
> + buf[6] = (uint8_t)(value >> 48U & 0xFF);
> + buf[7] = (uint8_t)(value >> 56U & 0xFF);
> +
> + return efi_set_variable(name, vendor,
> + EFI_VARIABLE_BOOTSERVICE_ACCESS |
> + EFI_VARIABLE_RUNTIME_ACCESS, buf,
> + sizeof(buf));
> +}
> +
> struct efi_boot {
> u32 attributes;
> u16 file_path_len;
> --
> 2.39.2
>
>
>
--
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prev parent reply other threads:[~2023-12-13 6:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-06 13:11 Michael Olbrich
2023-12-06 13:11 ` [PATCH 2/2] efi: fill more EFI runtime variables defined by systemd Michael Olbrich
2023-12-13 6:47 ` Sascha Hauer [this message]
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