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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/mips/bcm63xx/prom.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/mips/bcm63xx/prom.c')
-rw-r--r--arch/mips/bcm63xx/prom.c99
1 files changed, 99 insertions, 0 deletions
diff --git a/arch/mips/bcm63xx/prom.c b/arch/mips/bcm63xx/prom.c
new file mode 100644
index 000000000..f21dd1681
--- /dev/null
+++ b/arch/mips/bcm63xx/prom.c
@@ -0,0 +1,99 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
+ */
+
+#include <linux/init.h>
+#include <linux/memblock.h>
+#include <linux/smp.h>
+#include <asm/bootinfo.h>
+#include <asm/bmips.h>
+#include <asm/smp-ops.h>
+#include <asm/mipsregs.h>
+#include <bcm63xx_board.h>
+#include <bcm63xx_cpu.h>
+#include <bcm63xx_io.h>
+#include <bcm63xx_regs.h>
+
+void __init prom_init(void)
+{
+ u32 reg, mask;
+
+ /* Cache CBR addr before CPU/DMA setup */
+ bmips_cbr_addr = BMIPS_GET_CBR();
+
+ bcm63xx_cpu_init();
+
+ /* stop any running watchdog */
+ bcm_wdt_writel(WDT_STOP_1, WDT_CTL_REG);
+ bcm_wdt_writel(WDT_STOP_2, WDT_CTL_REG);
+
+ /* disable all hardware blocks clock for now */
+ if (BCMCPU_IS_3368())
+ mask = CKCTL_3368_ALL_SAFE_EN;
+ else if (BCMCPU_IS_6328())
+ mask = CKCTL_6328_ALL_SAFE_EN;
+ else if (BCMCPU_IS_6338())
+ mask = CKCTL_6338_ALL_SAFE_EN;
+ else if (BCMCPU_IS_6345())
+ mask = CKCTL_6345_ALL_SAFE_EN;
+ else if (BCMCPU_IS_6348())
+ mask = CKCTL_6348_ALL_SAFE_EN;
+ else if (BCMCPU_IS_6358())
+ mask = CKCTL_6358_ALL_SAFE_EN;
+ else if (BCMCPU_IS_6362())
+ mask = CKCTL_6362_ALL_SAFE_EN;
+ else if (BCMCPU_IS_6368())
+ mask = CKCTL_6368_ALL_SAFE_EN;
+ else
+ mask = 0;
+
+ reg = bcm_perf_readl(PERF_CKCTL_REG);
+ reg &= ~mask;
+ bcm_perf_writel(reg, PERF_CKCTL_REG);
+
+ /* do low level board init */
+ board_prom_init();
+
+ /* set up SMP */
+ if (!register_bmips_smp_ops()) {
+ /*
+ * BCM6328 might not have its second CPU enabled, while BCM3368
+ * and BCM6358 need special handling for their shared TLB, so
+ * disable SMP for now.
+ */
+ if (BCMCPU_IS_6328()) {
+ reg = bcm_readl(BCM_6328_OTP_BASE +
+ OTP_USER_BITS_6328_REG(3));
+
+ if (reg & OTP_6328_REG3_TP1_DISABLED)
+ bmips_smp_enabled = 0;
+ } else if (BCMCPU_IS_3368() || BCMCPU_IS_6358()) {
+ bmips_smp_enabled = 0;
+ }
+
+ if (!bmips_smp_enabled)
+ return;
+
+ /*
+ * The bootloader has set up the CPU1 reset vector at
+ * 0xa000_0200.
+ * This conflicts with the special interrupt vector (IV).
+ * The bootloader has also set up CPU1 to respond to the wrong
+ * IPI interrupt.
+ * Here we will start up CPU1 in the background and ask it to
+ * reconfigure itself then go back to sleep.
+ */
+ memcpy((void *)0xa0000200, bmips_smp_movevec, 0x20);
+ __sync();
+ set_c0_cause(C_SW0);
+ cpumask_set_cpu(1, &bmips_booted_mask);
+
+ /*
+ * FIXME: we really should have some sort of hazard barrier here
+ */
+ }
+}