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/** @file
*
* Copyright (c) 2016, Hisilicon Limited. All rights reserved.
* Copyright (c) 2016, Linaro Limited. All rights reserved.
*
* This program and the accompanying materials
* are licensed and made available under the terms and conditions of the BSD License
* which accompanies this distribution. The full text of the license may be found at
* http://opensource.org/licenses/bsd-license.php
*
* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
*
**/
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/IoLib.h>
#include <Library/TimerLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Protocol/PlatformSasProtocol.h>
#define SAS0_BASE 0xc0000000
#define SAS0_RESET 0xa60
#define SAS0_DISABLE_CLK 0x33c
#define SAS0_DERESET 0xa64
#define SAS0_ENABLE_CLK 0x338
#define SAS1_BASE 0xb0000000
#define SAS1_RESET 0xa18
#define SAS1_DISABLE_CLK 0x31c
#define SAS1_DERESET 0xa1c
#define SAS1_ENABLE_CLK 0x318
#define SAS_RESET_VALUE 0x7ffff
STATIC
VOID
SasInit_0 (
IN PLATFORM_SAS_PROTOCOL *This
)
{
// Apply reset and disable clock
MmioWrite32(SAS0_BASE + SAS0_RESET, SAS_RESET_VALUE);
MmioWrite32(SAS0_BASE + SAS0_DISABLE_CLK, SAS_RESET_VALUE);
// Wait 1ms for reset takes effect, refer drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
MicroSecondDelay(1000);
// De-reset and enable clock
MmioWrite32(SAS0_BASE + SAS0_DERESET, SAS_RESET_VALUE);
MmioWrite32(SAS0_BASE + SAS0_ENABLE_CLK, SAS_RESET_VALUE);
// Wait 1ms for de-reset takes effect, refer drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
MicroSecondDelay(1000);
}
PLATFORM_SAS_PROTOCOL Sas0 = {
0xc1000000,
SasInit_0
};
STATIC
VOID
SasInit_1 (
IN PLATFORM_SAS_PROTOCOL *This
)
{
// Apply reset and disable clock
MmioWrite32(SAS1_BASE + SAS1_RESET, SAS_RESET_VALUE);
MmioWrite32(SAS1_BASE + SAS1_DISABLE_CLK, SAS_RESET_VALUE);
// Wait 1ms for reset takes effect, refer drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
MicroSecondDelay(1000);
// De-reset and enable clock
MmioWrite32(SAS1_BASE + SAS1_DERESET, SAS_RESET_VALUE);
MmioWrite32(SAS1_BASE + SAS1_ENABLE_CLK, SAS_RESET_VALUE);
// Wait 1ms for de-reset takes effect, refer drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
MicroSecondDelay(1000);
}
PLATFORM_SAS_PROTOCOL Sas1 = {
0xb1000000,
SasInit_1
};
EFI_STATUS
EFIAPI
SasV1InitEntry (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_HANDLE Handle;
EFI_STATUS Status;
Handle = NULL;
Status = gBS->InstallMultipleProtocolInterfaces(
&Handle,
&gPlatformSasProtocolGuid, &Sas0,
NULL
);
if (EFI_ERROR(Status)) {
return Status;
}
Handle = NULL;
Status = gBS->InstallMultipleProtocolInterfaces(
&Handle,
&gPlatformSasProtocolGuid, &Sas1,
NULL
);
return Status;
}
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