mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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3a76b35186
The current bcm_kona_smc_init function throws a BUG_ON if there's no SMC device node defined in the device tree. Since secure API access is optional depending the chip configuration, fix this by allowing the rest of the code to run even if there's no SMC device node defined Signed-off-by: Christian Daudt <csd@broadcom.com> Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/*
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* Copyright (C) 2012-2013 Broadcom Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/of_platform.h>
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/platform_device.h>
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#include <linux/clocksource.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/time.h>
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#include <asm/hardware/cache-l2x0.h>
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#include "bcm_kona_smc.h"
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#include "kona.h"
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static int __init kona_l2_cache_init(void)
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{
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if (!IS_ENABLED(CONFIG_CACHE_L2X0))
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return 0;
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if (bcm_kona_smc_init() < 0) {
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pr_info("Kona secure API not available. Skipping L2 init\n");
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return 0;
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}
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bcm_kona_smc(SSAPI_ENABLE_L2_CACHE, 0, 0, 0, 0);
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/*
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* The aux_val and aux_mask have no effect since L2 cache is already
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* enabled. Pass 0s for aux_val and 1s for aux_mask for default value.
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*/
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return l2x0_of_init(0, ~0);
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}
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static void bcm_board_setup_restart(void)
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{
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struct device_node *np;
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np = of_find_compatible_node(NULL, NULL, "brcm,bcm11351");
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if (np) {
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if (of_device_is_available(np))
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bcm_kona_setup_restart();
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of_node_put(np);
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}
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/* Restart setup for other boards goes here */
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}
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static void __init board_init(void)
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{
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of_platform_populate(NULL, of_default_bus_match_table, NULL,
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&platform_bus);
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bcm_board_setup_restart();
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kona_l2_cache_init();
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}
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static const char * const bcm11351_dt_compat[] = { "brcm,bcm11351", NULL, };
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DT_MACHINE_START(BCM11351_DT, "Broadcom Application Processor")
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.init_time = clocksource_of_init,
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.init_machine = board_init,
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.restart = bcm_kona_restart,
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.dt_compat = bcm11351_dt_compat,
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MACHINE_END
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