sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

EmbeddedPkg/MmcDxe: set I/O speed and bus width in SD stack

Browse Source 
Add more SD commands to support 4-bit bus width & iospeed.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Tested-by: Ryan Harkin <ryan.harkin@linaro.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
This commit is contained in:
Haojian Zhuang
2016-11-23 21:36:22 +08:00
committed by Ard Biesheuvel
parent 752ae80514
commit e06253ba80
2 changed files with 122 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
EmbeddedPkg/Universal/MmcDxe/Mmc.h
View File

@@ -80,6 +80,22 @@ typedef struct {
UINT32 PowerUp: 1; // This bit is set to LOW if the card has not finished the power up routine
} OCR;
typedef struct {
UINT8 SD_SPEC: 4; // SD Memory Card - Spec. Version [59:56]
UINT8 SCR_STRUCTURE: 4; // SCR Structure [63:60]
UINT8 SD_BUS_WIDTHS: 4; // DAT Bus widths supported [51:48]
UINT8 DATA_STAT_AFTER_ERASE: 1; // Data Status after erases [55]
UINT8 SD_SECURITY: 3; // CPRM Security Support [54:52]
UINT8 EX_SECURITY_1: 1; // Extended Security Support [43]
UINT8 SD_SPEC4: 1; // Spec. Version 4.00 or higher [42]
UINT8 RESERVED_1: 2; // Reserved [41:40]
UINT8 SD_SPEC3: 1; // Spec. Version 3.00 or higher [47]
UINT8 EX_SECURITY_2: 3; // Extended Security Support [46:44]
UINT8 CMD_SUPPORT: 4; // Command Support bits [35:32]
UINT8 RESERVED_2: 4; // Reserved [39:36]
UINT32 RESERVED_3; // Manufacturer Usage [31:0]
} SCR;
typedef struct {
UINT32 NOT_USED; // 1 [0:0]
UINT32 CRC; // CRC7 checksum [7:1]