From 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 2 Sep 2026 15:31:14 -0700 Subject: treewide: refresh kmalloc_obj() conversions 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 --- arch/mips/rb532/prom.c | 125 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 125 insertions(+) create mode 100644 arch/mips/rb532/prom.c (limited to 'arch/mips/rb532/prom.c') diff --git a/arch/mips/rb532/prom.c b/arch/mips/rb532/prom.c new file mode 100644 index 000000000..8c370eb18 --- /dev/null +++ b/arch/mips/rb532/prom.c @@ -0,0 +1,125 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * RouterBoard 500 specific prom routines + * + * Copyright (C) 2003, Peter Sadik + * Copyright (C) 2005-2006, P.Christeas + * Copyright (C) 2007, Gabor Juhos + * Felix Fietkau + * Florian Fainelli + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +unsigned int idt_cpu_freq = 132000000; +EXPORT_SYMBOL(idt_cpu_freq); + +static struct resource ddr_reg[] = { + { + .name = "ddr-reg", + .start = DDR0_PHYS_ADDR, + .end = DDR0_PHYS_ADDR + sizeof(struct ddr_ram), + .flags = IORESOURCE_MEM, + } +}; + +static inline int match_tag(char *arg, const char *tag) +{ + return strncmp(arg, tag, strlen(tag)) == 0; +} + +static inline unsigned long tag2ul(char *arg, const char *tag) +{ + char *num; + + num = arg + strlen(tag); + return simple_strtoul(num, 0, 10); +} + +static void __init prom_setup_cmdline(void) +{ + static char cmd_line[COMMAND_LINE_SIZE] __initdata; + char *cp, *board; + int prom_argc; + char **prom_argv; + int i; + size_t len; + + prom_argc = fw_arg0; + prom_argv = (char **) fw_arg1; + + cp = cmd_line; + /* Note: it is common that parameters start + * at argv[1] and not argv[0], + * however, our elf loader starts at [0] */ + for (i = 0; i < prom_argc; i++) { + if (match_tag(prom_argv[i], FREQ_TAG)) { + idt_cpu_freq = tag2ul(prom_argv[i], FREQ_TAG); + continue; + } +#ifdef IGNORE_CMDLINE_MEM + /* parses out the "mem=xx" arg */ + if (match_tag(prom_argv[i], MEM_TAG)) + continue; +#endif + if (i > 0) + *(cp++) = ' '; + if (match_tag(prom_argv[i], BOARD_TAG)) { + board = prom_argv[i] + strlen(BOARD_TAG); + + if (match_tag(board, BOARD_RB532A)) + mips_machtype = MACH_MIKROTIK_RB532A; + else + mips_machtype = MACH_MIKROTIK_RB532; + } + + len = strlen(prom_argv[i]); + memcpy(cp, prom_argv[i], len + 1); + cp += len; + } + *(cp++) = ' '; + + len = strlen(arcs_cmdline); + if (len > 0) { + *(cp++) = ' '; + memcpy(cp, arcs_cmdline, len + 1); + cp += len; + } + cmd_line[COMMAND_LINE_SIZE - 1] = '\0'; + strscpy(arcs_cmdline, cmd_line); +} + +void __init prom_init(void) +{ + struct ddr_ram __iomem *ddr; + phys_addr_t memsize; + phys_addr_t ddrbase; + + ddr = ioremap(ddr_reg[0].start, + ddr_reg[0].end - ddr_reg[0].start); + + if (!ddr) { + printk(KERN_ERR "Unable to remap DDR register\n"); + return; + } + + ddrbase = (phys_addr_t)&ddr->ddrbase; + memsize = (phys_addr_t)&ddr->ddrmask; + memsize = 0 - memsize; + + prom_setup_cmdline(); + + /* give all RAM to boot allocator, + * except for the first 0x400 and the last 0x200 bytes */ + memblock_add(ddrbase + 0x400, memsize - 0x600); +} -- cgit v1.3.1