diff options
Diffstat (limited to 'arch/arm/mach-exynos/firmware.c')
| -rw-r--r-- | arch/arm/mach-exynos/firmware.c | 34 |
1 files changed, 21 insertions, 13 deletions
diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c index e81a78b125d9..a5e22678e27b 100644 --- a/arch/arm/mach-exynos/firmware.c +++ b/arch/arm/mach-exynos/firmware.c @@ -1,12 +1,8 @@ -/* - * Copyright (C) 2012 Samsung Electronics. - * Kyungmin Park <kyungmin.park@samsung.com> - * Tomasz Figa <t.figa@samsung.com> - * - * This program is free software,you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (C) 2012 Samsung Electronics. +// Kyungmin Park <kyungmin.park@samsung.com> +// Tomasz Figa <t.figa@samsung.com> #include <linux/kernel.h> #include <linux/io.h> @@ -64,8 +60,11 @@ static int exynos_cpu_boot(int cpu) /* * Exynos3250 doesn't need to send smc command for secondary CPU boot * because Exynos3250 removes WFE in secure mode. + * + * On Exynos5 devices the call is ignored by trustzone firmware. */ - if (soc_is_exynos3250()) + if (!soc_is_exynos4210() && !soc_is_exynos4212() && + !soc_is_exynos4412()) return 0; /* @@ -194,7 +193,7 @@ static void exynos_l2_configure(const struct l2x0_regs *regs) exynos_smc(SMC_CMD_L2X0SETUP2, regs->pwr_ctrl, regs->aux_ctrl, 0); } -void __init exynos_firmware_init(void) +bool __init exynos_secure_firmware_available(void) { struct device_node *nd; const __be32 *addr; @@ -202,14 +201,23 @@ void __init exynos_firmware_init(void) nd = of_find_compatible_node(NULL, NULL, "samsung,secure-firmware"); if (!nd) - return; + return false; addr = of_get_address(nd, 0, NULL, NULL); + of_node_put(nd); if (!addr) { pr_err("%s: No address specified.\n", __func__); - return; + return false; } + return true; +} + +void __init exynos_firmware_init(void) +{ + if (!exynos_secure_firmware_available()) + return; + pr_info("Running under secure firmware.\n"); register_firmware_ops(&exynos_firmware_ops); |