diff options
author | danh-arm <dan.handley@arm.com> | 2015-06-09 17:06:33 +0100 |
---|---|---|
committer | danh-arm <dan.handley@arm.com> | 2015-06-09 17:06:33 +0100 |
commit | 056904cb4c944a89b2c6e1590ef73b59c54db414 (patch) | |
tree | 668fefcfe9eb93c7807c0d647a3280182957298a | |
parent | 5720b280726d10ac2bd137b32eaad16ececc786e (diff) | |
parent | fe55612bdb38359e8fb36cec7ab535b877627c3c (diff) |
Merge pull request #314 from sandrine-bailleux/sb/css-data-structs
Clarify some CSS data structures
-rw-r--r-- | include/plat/arm/css/common/css_def.h | 26 | ||||
-rw-r--r-- | plat/arm/css/common/css_scp_bootloader.c | 4 | ||||
-rw-r--r-- | plat/arm/css/common/css_scpi.c | 4 |
3 files changed, 25 insertions, 9 deletions
diff --git a/include/plat/arm/css/common/css_def.h b/include/plat/arm/css/common/css_def.h index 056c00d..268438f 100644 --- a/include/plat/arm/css/common/css_def.h +++ b/include/plat/arm/css/common/css_def.h @@ -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 @@ -66,11 +64,29 @@ #define CSS_IRQ_TZC 80 #define CSS_IRQ_TZ_WDOG 86 -/* SCP <=> AP boot configuration */ -#define SCP_BOOT_CFG_ADDR 0x04000080 +/* + * SCP <=> AP boot configuration + * + * The SCP/AP boot configuration is a 32-bit word located at a known offset from + * the start of the Trusted SRAM. Part of this configuration is which CPU is the + * primary, according to the shift and mask definitions below. + * + * Note that the value stored at this address is only valid at boot time, before + * the BL3-0 image is transferred to SCP. + */ +#define SCP_BOOT_CFG_ADDR (ARM_TRUSTED_SRAM_BASE + 0x80) #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, \ diff --git a/plat/arm/css/common/css_scp_bootloader.c b/plat/arm/css/common/css_scp_bootloader.c index 6cf1667..acc7351 100644 --- a/plat/arm/css/common/css_scp_bootloader.c +++ b/plat/arm/css/common/css_scp_bootloader.c @@ -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)); diff --git a/plat/arm/css/common/css_scpi.c b/plat/arm/css/common/css_scpi.c index 9127259..0a4eafe 100644 --- a/plat/arm/css/common/css_scpi.c +++ b/plat/arm/css/common/css_scpi.c @@ -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) |