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/powerpc/boot/pq2.c | 99 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 arch/powerpc/boot/pq2.c (limited to 'arch/powerpc/boot/pq2.c') diff --git a/arch/powerpc/boot/pq2.c b/arch/powerpc/boot/pq2.c new file mode 100644 index 000000000..de27f1c07 --- /dev/null +++ b/arch/powerpc/boot/pq2.c @@ -0,0 +1,99 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * PowerQUICC II support functions + * + * Author: Scott Wood + * + * Copyright (c) 2007 Freescale Semiconductor, Inc. + */ + +#include "ops.h" +#include "types.h" +#include "fsl-soc.h" +#include "pq2.h" +#include "stdio.h" +#include "io.h" + +#define PQ2_SCCR (0x10c80/4) /* System Clock Configuration Register */ +#define PQ2_SCMR (0x10c88/4) /* System Clock Mode Register */ + +static int pq2_corecnf_map[] = { + 3, 2, 2, 2, 4, 4, 5, 9, 6, 11, 8, 10, 3, 12, 7, -1, + 6, 5, 13, 2, 14, 4, 15, 9, 0, 11, 8, 10, 16, 12, 7, -1 +}; + +/* Get various clocks from crystal frequency. + * Returns zero on failure and non-zero on success. + */ +int pq2_get_clocks(u32 crystal, u32 *sysfreq, u32 *corefreq, + u32 *timebase, u32 *brgfreq) +{ + u32 *immr; + u32 sccr, scmr, mainclk, busclk; + int corecnf, busdf, plldf, pllmf, dfbrg; + + immr = fsl_get_immr(); + if (!immr) { + printf("pq2_get_clocks: Couldn't get IMMR base.\r\n"); + return 0; + } + + sccr = in_be32(&immr[PQ2_SCCR]); + scmr = in_be32(&immr[PQ2_SCMR]); + + dfbrg = sccr & 3; + corecnf = (scmr >> 24) & 0x1f; + busdf = (scmr >> 20) & 0xf; + plldf = (scmr >> 12) & 1; + pllmf = scmr & 0xfff; + + mainclk = crystal * (pllmf + 1) / (plldf + 1); + busclk = mainclk / (busdf + 1); + + if (sysfreq) + *sysfreq = mainclk / 2; + if (timebase) + *timebase = busclk / 4; + if (brgfreq) + *brgfreq = mainclk / (1 << ((dfbrg + 1) * 2)); + + if (corefreq) { + int coremult = pq2_corecnf_map[corecnf]; + + if (coremult < 0) + *corefreq = mainclk / 2; + else if (coremult == 0) + return 0; + else + *corefreq = busclk * coremult / 2; + } + + return 1; +} + +/* Set common device tree fields based on the given clock frequencies. */ +void pq2_set_clocks(u32 sysfreq, u32 corefreq, u32 timebase, u32 brgfreq) +{ + void *node; + + dt_fixup_cpu_clocks(corefreq, timebase, sysfreq); + + node = finddevice("/soc/cpm"); + if (node) + setprop(node, "clock-frequency", &sysfreq, 4); + + node = finddevice("/soc/cpm/brg"); + if (node) + setprop(node, "clock-frequency", &brgfreq, 4); +} + +int pq2_fixup_clocks(u32 crystal) +{ + u32 sysfreq, corefreq, timebase, brgfreq; + + if (!pq2_get_clocks(crystal, &sysfreq, &corefreq, &timebase, &brgfreq)) + return 0; + + pq2_set_clocks(sysfreq, corefreq, timebase, brgfreq); + return 1; +} -- cgit v1.3.1