diff options
Diffstat (limited to 'arch/arm/mach-bcm')
| -rw-r--r-- | arch/arm/mach-bcm/bcm_kona_smc.c | 45 | ||||
| -rw-r--r-- | arch/arm/mach-bcm/bcm_kona_smc.h | 46 |
2 files changed, 24 insertions, 67 deletions
diff --git a/arch/arm/mach-bcm/bcm_kona_smc.c b/arch/arm/mach-bcm/bcm_kona_smc.c index ddc2f17217ee..0d2bfe2bcfa8 100644 --- a/arch/arm/mach-bcm/bcm_kona_smc.c +++ b/arch/arm/mach-bcm/bcm_kona_smc.c @@ -21,11 +21,8 @@ #include "bcm_kona_smc.h" -struct secure_bridge_data { - void __iomem *bounce; /* virtual address */ - u32 __iomem buffer_addr; /* physical address */ - int initialized; -} bridge_data; +static u32 bcm_smc_buffer_phys; /* physical address */ +static void __iomem *bcm_smc_buffer; /* virtual address */ struct bcm_kona_smc_data { unsigned service_id; @@ -41,31 +38,37 @@ static const struct of_device_id bcm_kona_smc_ids[] __initconst = { {}, }; -/* Map in the bounce area */ +/* Map in the args buffer area */ int __init bcm_kona_smc_init(void) { struct device_node *node; const __be32 *prop_val; + u64 prop_size = 0; + unsigned long buffer_size; + u32 buffer_phys; /* Read buffer addr and size from the device tree node */ node = of_find_matching_node(NULL, bcm_kona_smc_ids); if (!node) return -ENODEV; - /* Don't care about size or flags of the DT node */ - prop_val = of_get_address(node, 0, NULL, NULL); + prop_val = of_get_address(node, 0, &prop_size, NULL); if (!prop_val) return -EINVAL; - bridge_data.buffer_addr = be32_to_cpu(*prop_val); - if (!bridge_data.buffer_addr) + /* We assume space for four 32-bit arguments */ + if (prop_size < 4 * sizeof(u32) || prop_size > (u64)ULONG_MAX) return -EINVAL; + buffer_size = (unsigned long)prop_size; - bridge_data.bounce = of_iomap(node, 0); - if (!bridge_data.bounce) - return -ENOMEM; + buffer_phys = be32_to_cpup(prop_val); + if (!buffer_phys) + return -EINVAL; - bridge_data.initialized = 1; + bcm_smc_buffer = ioremap(buffer_phys, buffer_size); + if (!bcm_smc_buffer) + return -ENOMEM; + bcm_smc_buffer_phys = buffer_phys; pr_info("Kona Secure API initialized\n"); @@ -76,14 +79,11 @@ int __init bcm_kona_smc_init(void) static void __bcm_kona_smc(void *info) { struct bcm_kona_smc_data *data = info; - u32 *args = bridge_data.bounce; - int rc = 0; + u32 *args = bcm_smc_buffer; + int rc; - /* Must run on CPU 0 */ BUG_ON(smp_processor_id() != 0); - - /* Check map in the bounce area */ - BUG_ON(!bridge_data.initialized); + BUG_ON(!args); /* Copy the four 32 bit argument values into the bounce area */ writel_relaxed(data->arg0, args++); @@ -92,11 +92,10 @@ static void __bcm_kona_smc(void *info) writel(data->arg3, args); /* Flush caches for input data passed to Secure Monitor */ - if (data->service_id != SSAPI_BRCM_START_VC_CORE) - flush_cache_all(); + flush_cache_all(); /* Trap into Secure Monitor */ - rc = bcm_kona_smc_asm(data->service_id, bridge_data.buffer_addr); + rc = bcm_kona_smc_asm(data->service_id, bcm_smc_buffer_phys); if (rc != SEC_ROM_RET_OK) pr_err("Secure Monitor call failed (0x%x)!\n", rc); diff --git a/arch/arm/mach-bcm/bcm_kona_smc.h b/arch/arm/mach-bcm/bcm_kona_smc.h index d098a7e76744..629e64a89982 100644 --- a/arch/arm/mach-bcm/bcm_kona_smc.h +++ b/arch/arm/mach-bcm/bcm_kona_smc.h @@ -15,54 +15,12 @@ #define BCM_KONA_SMC_H #include <linux/types.h> -#define FLAGS (SEC_ROM_ICACHE_ENABLE_MASK | SEC_ROM_DCACHE_ENABLE_MASK | \ - SEC_ROM_IRQ_ENABLE_MASK | SEC_ROM_FIQ_ENABLE_MASK) -/*! - * Definitions for IRQ & FIQ Mask for ARM - */ - -#define FIQ_IRQ_MASK 0xC0 -#define FIQ_MASK 0x40 -#define IRQ_MASK 0x80 - -/*! - * Secure Mode FLAGs - */ - -/* When set, enables ICache within the secure mode */ -#define SEC_ROM_ICACHE_ENABLE_MASK 0x00000001 - -/* When set, enables DCache within the secure mode */ -#define SEC_ROM_DCACHE_ENABLE_MASK 0x00000002 - -/* When set, enables IRQ within the secure mode */ -#define SEC_ROM_IRQ_ENABLE_MASK 0x00000004 - -/* When set, enables FIQ within the secure mode */ -#define SEC_ROM_FIQ_ENABLE_MASK 0x00000008 - -/* When set, enables Unified L2 cache within the secure mode */ -#define SEC_ROM_UL2_CACHE_ENABLE_MASK 0x00000010 - -/* Broadcom Secure Service API Service IDs */ -#define SSAPI_DORMANT_ENTRY_SERV 0x01000000 -#define SSAPI_PUBLIC_OTP_SERV 0x01000001 -#define SSAPI_ENABLE_L2_CACHE 0x01000002 -#define SSAPI_DISABLE_L2_CACHE 0x01000003 -#define SSAPI_WRITE_SCU_STATUS 0x01000004 -#define SSAPI_WRITE_PWR_GATE 0x01000005 - -/* Broadcom Secure Service API Return Codes */ +/* Broadcom Secure Service API service IDs, return codes, and exit codes */ +#define SSAPI_ENABLE_L2_CACHE 0x01000002 #define SEC_ROM_RET_OK 0x00000001 -#define SEC_ROM_RET_FAIL 0x00000009 - -#define SSAPI_RET_FROM_INT_SERV 0x4 #define SEC_EXIT_NORMAL 0x1 -#define SSAPI_ROW_AES 0x0E000006 -#define SSAPI_BRCM_START_VC_CORE 0x0E000008 - #ifndef __ASSEMBLY__ extern int __init bcm_kona_smc_init(void); |