From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- arch/powerpc/boot/redboot-8xx.c | 58 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 arch/powerpc/boot/redboot-8xx.c (limited to 'arch/powerpc/boot/redboot-8xx.c') diff --git a/arch/powerpc/boot/redboot-8xx.c b/arch/powerpc/boot/redboot-8xx.c new file mode 100644 index 000000000..f7945adc8 --- /dev/null +++ b/arch/powerpc/boot/redboot-8xx.c @@ -0,0 +1,58 @@ +/* + * RedBoot firmware support + * + * Author: Scott Wood + * + * Copyright (c) 2007 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include "ops.h" +#include "stdio.h" +#include "redboot.h" +#include "fsl-soc.h" +#include "io.h" + +static bd_t bd; +BSS_STACK(4096); + +#define MHZ(x) ((x + 500000) / 1000000) + +static void platform_fixups(void) +{ + void *node; + + dt_fixup_memory(bd.bi_memstart, bd.bi_memsize); + dt_fixup_mac_addresses(bd.bi_enetaddr); + dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 16, bd.bi_busfreq); + + node = finddevice("/soc/cpm/brg"); + if (node) { + printf("BRG clock-frequency <- 0x%x (%dMHz)\r\n", + bd.bi_busfreq, MHZ(bd.bi_busfreq)); + setprop(node, "clock-frequency", &bd.bi_busfreq, 4); + } +} + +void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, + unsigned long r6, unsigned long r7) +{ + memcpy(&bd, (char *)r3, sizeof(bd)); + + if (bd.bi_tag != 0x42444944) + return; + + simple_alloc_init(_end, + bd.bi_memstart + bd.bi_memsize - (unsigned long)_end, + 32, 64); + + fdt_init(_dtb_start); + serial_console_init(); + platform_ops.fixups = platform_fixups; + + loader_info.cmdline = (char *)bd.bi_cmdline; + loader_info.cmdline_len = strlen((char *)bd.bi_cmdline); +} -- cgit v1.2.3