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CSS: Remove the constants MHU_SECURE_BASE/SIZE

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For CSS based platforms, the constants MHU_SECURE_BASE and
MHU_SECURE_SIZE used to define the extents of the Trusted Mailboxes.
As such, they were misnamed because the mailboxes are completely
unrelated to the MHU hardware.

This patch removes the MHU_SECURE_BASE and MHU_SECURE_SIZE #defines.
The address of the Trusted Mailboxes is now relative to the base of
the Trusted SRAM.

This patch also introduces a new constant, SCP_COM_SHARED_MEM_BASE,
which is the address of the first memory region used for communication
between AP and SCP. This is used by the BOM and SCPI protocols.

Change-Id: Ib200f057b19816bf05e834d111271c3ea777291f
This commit is contained in:
Sandrine Bailleux 2015-06-09 11:53:33 +01:00
parent 9255da5f63
commit fe55612bdb
3 changed files with 14 additions and 7 deletions
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13
include/plat/arm/css/common/css_def.h
View File

@ -37,11 +37,9 @@
/*************************************************************************
* Definitions common to all ARM Compute SubSystems (CSS)
*************************************************************************/
#define MHU_SECURE_BASE ARM_SHARED_RAM_BASE
#define MHU_SECURE_SIZE ARM_SHARED_RAM_SIZE
#define MHU_PAYLOAD_CACHED 0
#define TRUSTED_MAILBOXES_BASE MHU_SECURE_BASE
#define TRUSTED_MAILBOXES_BASE ARM_TRUSTED_SRAM_BASE
#define TRUSTED_MAILBOX_SHIFT 4
#define NSROM_BASE 0x1f000000
@ -80,6 +78,15 @@
#define PRIMARY_CPU_SHIFT 8
#define PRIMARY_CPU_BIT_WIDTH 4
/*
* Base address of the first memory region used for communication between AP
* and SCP. Used by the BOM and SCPI protocols.
*
* Note that this is located at the same address as SCP_BOOT_CFG_ADDR, which
* means the SCP/AP configuration data gets overwritten when the AP initiates
* communication with the SCP.
*/
#define SCP_COM_SHARED_MEM_BASE (ARM_TRUSTED_SRAM_BASE + 0x80)
#define CSS_MAP_DEVICE MAP_REGION_FLAT( \
CSS_DEVICE_BASE, \

4
plat/arm/css/common/css_scp_bootloader.c
View File

@ -60,7 +60,7 @@ typedef struct {
* Unlike the SCPI protocol, the boot protocol uses the same memory region
* for both AP -> SCP and SCP -> AP transfers; define the address of this...
*/
#define BOM_SHARED_MEM (MHU_SECURE_BASE + 0x0080)
#define BOM_SHARED_MEM SCP_COM_SHARED_MEM_BASE
#define BOM_CMD_HEADER ((bom_cmd_t *) BOM_SHARED_MEM)
#define BOM_CMD_PAYLOAD ((void *) (BOM_SHARED_MEM + sizeof(bom_cmd_t)))
@ -181,7 +181,7 @@ int scp_bootloader_transfer(void *image, unsigned int image_size)
BOM_CMD_HEADER->id = BOOT_CMD_DATA;
cmd_data_payload = BOM_CMD_PAYLOAD;
cmd_data_payload->offset = (uintptr_t) image - MHU_SECURE_BASE;
cmd_data_payload->offset = (uintptr_t) image - ARM_TRUSTED_SRAM_BASE;
cmd_data_payload->block_size = image_size;
scp_boot_message_send(sizeof(*cmd_data_payload));

4
plat/arm/css/common/css_scpi.c
View File

@ -37,8 +37,8 @@
#include "css_mhu.h"
#include "css_scpi.h"
#define SCPI_SHARED_MEM_SCP_TO_AP (MHU_SECURE_BASE + 0x0080)
#define SCPI_SHARED_MEM_AP_TO_SCP (MHU_SECURE_BASE + 0x0180)
#define SCPI_SHARED_MEM_SCP_TO_AP SCP_COM_SHARED_MEM_BASE
#define SCPI_SHARED_MEM_AP_TO_SCP (SCP_COM_SHARED_MEM_BASE + 0x100)
#define SCPI_CMD_HEADER_AP_TO_SCP \
((scpi_cmd_t *) SCPI_SHARED_MEM_AP_TO_SCP)