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ieee1275: block-size deblocker support method

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IEEE Std 1275-1994 Standard for Boot (Initialization Configuration)
Firmware: Core Requirements and Practices

3.8.3 deblocker support package

Any package that uses the "deblocker" support package must define
the following method, which the deblocker uses as a low-level
interface to the device

block-size ( -- block-len ) Return "granularity" for accesses to this
device.

Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Eric Snowberg 2018-02-26 17:34:18 -08:00 committed by Vincent Batts
parent efa8a2c2a1
commit 0d9cea1c53
2 changed files with 24 additions and 0 deletions
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23
grub-core/kern/ieee1275/ieee1275.c
View file

@ -784,3 +784,26 @@ grub_ieee1275_no_data_command (grub_ieee1275_ihandle_t ihandle,
return args.catch_result;
}
int
grub_ieee1275_get_block_size (grub_ieee1275_ihandle_t ihandle)
{
struct size_args_ieee1275
{
struct grub_ieee1275_common_hdr common;
grub_ieee1275_cell_t method;
grub_ieee1275_cell_t ihandle;
grub_ieee1275_cell_t result;
grub_ieee1275_cell_t size;
} args;
INIT_IEEE1275_COMMON (&args.common, "call-method", 2, 2);
args.method = (grub_ieee1275_cell_t) "block-size";
args.ihandle = ihandle;
args.result = 1;
if ((IEEE1275_CALL_ENTRY_FN (&args) == -1) || (args.result))
return 0;
return args.size;
}

1
include/grub/ieee1275/ieee1275.h
View file

@ -228,6 +228,7 @@ char *EXPORT_FUNC(grub_ieee1275_encode_uint4) (grub_ieee1275_ihandle_t ihandle,
grub_uint32_t lun_lo,
grub_uint32_t lun_hi,
grub_size_t *size);
int EXPORT_FUNC(grub_ieee1275_get_block_size) (grub_ieee1275_ihandle_t ihandle);
grub_err_t EXPORT_FUNC(grub_claimmap) (grub_addr_t addr, grub_size_t size);