diff options
Diffstat (limited to 'arch/arm/mach-bcm/bcm_kona_smc.c')
| -rw-r--r-- | arch/arm/mach-bcm/bcm_kona_smc.c | 44 |
1 files changed, 10 insertions, 34 deletions
diff --git a/arch/arm/mach-bcm/bcm_kona_smc.c b/arch/arm/mach-bcm/bcm_kona_smc.c index a55a7ecf146a..f236e12d7a59 100644 --- a/arch/arm/mach-bcm/bcm_kona_smc.c +++ b/arch/arm/mach-bcm/bcm_kona_smc.c @@ -1,17 +1,5 @@ -/* - * Copyright (C) 2013 Broadcom Corporation - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation version 2. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <stdarg.h> +// SPDX-License-Identifier: GPL-2.0-only +// Copyright (C) 2013 Broadcom Corporation #include <linux/smp.h> #include <linux/io.h> #include <linux/ioport.h> @@ -43,33 +31,23 @@ static const struct of_device_id bcm_kona_smc_ids[] __initconst = { 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; + struct resource res; + int ret; /* Read buffer addr and size from the device tree node */ node = of_find_matching_node(NULL, bcm_kona_smc_ids); if (!node) return -ENODEV; - prop_val = of_get_address(node, 0, &prop_size, NULL); - if (!prop_val) - return -EINVAL; - - /* 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; - - buffer_phys = be32_to_cpup(prop_val); - if (!buffer_phys) + ret = of_address_to_resource(node, 0, &res); + of_node_put(node); + if (ret) return -EINVAL; - bcm_smc_buffer = ioremap(buffer_phys, buffer_size); + bcm_smc_buffer = ioremap(res.start, resource_size(&res)); if (!bcm_smc_buffer) return -ENOMEM; - bcm_smc_buffer_phys = buffer_phys; + bcm_smc_buffer_phys = res.start; pr_info("Kona Secure API initialized\n"); @@ -125,9 +103,7 @@ static int bcm_kona_do_smc(u32 service_id, u32 buffer_phys) __asmeq("%2", "r4") __asmeq("%3", "r5") __asmeq("%4", "r6") -#ifdef REQUIRES_SEC ".arch_extension sec\n" -#endif " smc #0\n" : "=r" (ip), "=r" (r0) : "r" (r4), "r" (r5), "r" (r6) @@ -142,7 +118,7 @@ static int bcm_kona_do_smc(u32 service_id, u32 buffer_phys) static void __bcm_kona_smc(void *info) { struct bcm_kona_smc_data *data = info; - u32 *args = bcm_smc_buffer; + u32 __iomem *args = bcm_smc_buffer; BUG_ON(smp_processor_id() != 0); BUG_ON(!args); |