| Message ID | a43ee733c91c73f1a66c8cf72ea1ff4a3b645063.1511865262.git-series.maxime.ripard@free-electrons.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | sunxi: Ease eMMC usage and flashing | expand |
On Tue, Nov 28, 2017 at 11:34:38AM +0100, Maxime Ripard wrote: > On some SoCs, the SPL needs to be located right in the middle of the GPT > partition entries. > > One way to work around that is to create partition entries for a smaller > number of partitions to accomodate with where the SPL will be. Create a > Kconfig option to allow to do that. > > Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Reviewed-by: Tom Rini <trini@konsulko.com> -- Tom
On 28/11/17 10:34, Maxime Ripard wrote: > On some SoCs, the SPL needs to be located right in the middle of the GPT > partition entries. > > One way to work around that is to create partition entries for a smaller > number of partitions to accomodate with where the SPL will be. Create a > Kconfig option to allow to do that. > > Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Reviewed-by: Andre Przywara <andre.przywara@arm.com> Thanks, Andre. > --- > disk/Kconfig | 13 +++++++++++++ > include/part_efi.h | 2 +- > 2 files changed, 14 insertions(+), 1 deletion(-) > > diff --git a/disk/Kconfig b/disk/Kconfig > index 939656212065..f82beef6e689 100644 > --- a/disk/Kconfig > +++ b/disk/Kconfig > @@ -78,6 +78,19 @@ config EFI_PARTITION > common when EFI is the bootloader. Note 2TB partition limit; > see disk/part_efi.c > > +config EFI_PARTITION_ENTRIES_NUMBERS > + int "Number of the EFI partition entries" > + depends on EFI_PARTITION > + default 128 > + help > + Specify the number of partition entries in the GPT. This is > + meant to allow less than the standard specifies for devices > + that might need to place their first-stage bootloader in the > + middle of a regular GPT. > + > + If unsure, leave at 128 entries, which is the standard > + number. > + > config EFI_PARTITION_ENTRIES_OFF > int "Offset (in bytes) of the EFI partition entries" > depends on EFI_PARTITION > diff --git a/include/part_efi.h b/include/part_efi.h > index 31e6bc6e140f..4c8f6cc473c8 100644 > --- a/include/part_efi.h > +++ b/include/part_efi.h > @@ -27,7 +27,7 @@ > #define GPT_HEADER_SIGNATURE 0x5452415020494645ULL > #define GPT_HEADER_REVISION_V1 0x00010000 > #define GPT_PRIMARY_PARTITION_TABLE_LBA 1ULL > -#define GPT_ENTRY_NUMBERS 128 > +#define GPT_ENTRY_NUMBERS CONFIG_EFI_PARTITION_ENTRIES_NUMBERS > #define GPT_ENTRY_SIZE 128 > > #define PARTITION_SYSTEM_GUID \ >
diff --git a/disk/Kconfig b/disk/Kconfig index 939656212065..f82beef6e689 100644 --- a/disk/Kconfig +++ b/disk/Kconfig @@ -78,6 +78,19 @@ config EFI_PARTITION common when EFI is the bootloader. Note 2TB partition limit; see disk/part_efi.c +config EFI_PARTITION_ENTRIES_NUMBERS + int "Number of the EFI partition entries" + depends on EFI_PARTITION + default 128 + help + Specify the number of partition entries in the GPT. This is + meant to allow less than the standard specifies for devices + that might need to place their first-stage bootloader in the + middle of a regular GPT. + + If unsure, leave at 128 entries, which is the standard + number. + config EFI_PARTITION_ENTRIES_OFF int "Offset (in bytes) of the EFI partition entries" depends on EFI_PARTITION diff --git a/include/part_efi.h b/include/part_efi.h index 31e6bc6e140f..4c8f6cc473c8 100644 --- a/include/part_efi.h +++ b/include/part_efi.h @@ -27,7 +27,7 @@ #define GPT_HEADER_SIGNATURE 0x5452415020494645ULL #define GPT_HEADER_REVISION_V1 0x00010000 #define GPT_PRIMARY_PARTITION_TABLE_LBA 1ULL -#define GPT_ENTRY_NUMBERS 128 +#define GPT_ENTRY_NUMBERS CONFIG_EFI_PARTITION_ENTRIES_NUMBERS #define GPT_ENTRY_SIZE 128 #define PARTITION_SYSTEM_GUID \
On some SoCs, the SPL needs to be located right in the middle of the GPT partition entries. One way to work around that is to create partition entries for a smaller number of partitions to accomodate with where the SPL will be. Create a Kconfig option to allow to do that. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> --- disk/Kconfig | 13 +++++++++++++ include/part_efi.h | 2 +- 2 files changed, 14 insertions(+), 1 deletion(-)