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authorKees Cook <kees+treewide@kernel.org>2026-09-02 15:31:14 -0700
committerKees Cook <kees@kernel.org>2026-09-04 21:37:00 -0700
commit3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch)
treec65086f9bdcd48c6360fb7cb4598bca084da1f32 /arch/arm/mach-tegra/reset.c
downloadlinux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz
linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook <kees+treewide@kernel.org>
Diffstat (limited to 'arch/arm/mach-tegra/reset.c')
-rw-r--r--arch/arm/mach-tegra/reset.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/reset.c b/arch/arm/mach-tegra/reset.c
new file mode 100644
index 000000000..ea706fac6
--- /dev/null
+++ b/arch/arm/mach-tegra/reset.c
@@ -0,0 +1,103 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * arch/arm/mach-tegra/reset.c
+ *
+ * Copyright (C) 2011,2012 NVIDIA Corporation.
+ */
+
+#include <linux/bitops.h>
+#include <linux/cpumask.h>
+#include <linux/init.h>
+#include <linux/io.h>
+
+#include <linux/firmware/trusted_foundations.h>
+
+#include <soc/tegra/fuse.h>
+
+#include <asm/cacheflush.h>
+#include <asm/firmware.h>
+#include <asm/hardware/cache-l2x0.h>
+
+#include "iomap.h"
+#include "irammap.h"
+#include "reset.h"
+#include "sleep.h"
+
+#define TEGRA_IRAM_RESET_BASE (TEGRA_IRAM_BASE + \
+ TEGRA_IRAM_RESET_HANDLER_OFFSET)
+
+static bool is_enabled;
+
+static void __init tegra_cpu_reset_handler_set(const u32 reset_address)
+{
+ void __iomem *evp_cpu_reset =
+ IO_ADDRESS(TEGRA_EXCEPTION_VECTORS_BASE + 0x100);
+ void __iomem *sb_ctrl = IO_ADDRESS(TEGRA_SB_BASE);
+ u32 reg;
+
+ /*
+ * NOTE: This must be the one and only write to the EVP CPU reset
+ * vector in the entire system.
+ */
+ writel(reset_address, evp_cpu_reset);
+ wmb();
+ reg = readl(evp_cpu_reset);
+
+ /*
+ * Prevent further modifications to the physical reset vector.
+ * NOTE: Has no effect on chips prior to Tegra30.
+ */
+ reg = readl(sb_ctrl);
+ reg |= 2;
+ writel(reg, sb_ctrl);
+ wmb();
+}
+
+static void __init tegra_cpu_reset_handler_enable(void)
+{
+ void __iomem *iram_base = IO_ADDRESS(TEGRA_IRAM_RESET_BASE);
+ const u32 reset_address = TEGRA_IRAM_RESET_BASE +
+ tegra_cpu_reset_handler_offset;
+ int err;
+
+ BUG_ON(is_enabled);
+ BUG_ON(tegra_cpu_reset_handler_size > TEGRA_IRAM_RESET_HANDLER_SIZE);
+
+ memcpy_toio(iram_base, (void *)__tegra_cpu_reset_handler_start,
+ tegra_cpu_reset_handler_size);
+
+ err = call_firmware_op(set_cpu_boot_addr, 0, reset_address);
+ switch (err) {
+ case -ENOSYS:
+ tegra_cpu_reset_handler_set(reset_address);
+ fallthrough;
+ case 0:
+ is_enabled = true;
+ break;
+ default:
+ pr_crit("Cannot set CPU reset handler: %d\n", err);
+ BUG();
+ }
+}
+
+void __init tegra_cpu_reset_handler_init(void)
+{
+ __tegra_cpu_reset_handler_data[TEGRA_RESET_TF_PRESENT] =
+ trusted_foundations_registered();
+
+#ifdef CONFIG_SMP
+ __tegra_cpu_reset_handler_data[TEGRA_RESET_MASK_PRESENT] =
+ *((u32 *)cpu_possible_mask);
+ __tegra_cpu_reset_handler_data[TEGRA_RESET_STARTUP_SECONDARY] =
+ __pa_symbol((void *)secondary_startup);
+#endif
+
+#ifdef CONFIG_PM_SLEEP
+ __tegra_cpu_reset_handler_data[TEGRA_RESET_STARTUP_LP1] =
+ TEGRA_IRAM_LPx_RESUME_AREA;
+ __tegra_cpu_reset_handler_data[TEGRA_RESET_STARTUP_LP2] =
+ __pa_symbol((void *)tegra_resume);
+#endif
+
+ tegra_cpu_reset_handler_enable();
+}