From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/powerpc/boot/fsl-soc.c | 54 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 arch/powerpc/boot/fsl-soc.c (limited to 'arch/powerpc/boot/fsl-soc.c') diff --git a/arch/powerpc/boot/fsl-soc.c b/arch/powerpc/boot/fsl-soc.c new file mode 100644 index 000000000..01bad8ea6 --- /dev/null +++ b/arch/powerpc/boot/fsl-soc.c @@ -0,0 +1,54 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Freescale SOC support functions + * + * Author: Scott Wood + * + * Copyright (c) 2007 Freescale Semiconductor, Inc. + */ + +#include "ops.h" +#include "types.h" +#include "fsl-soc.h" +#include "stdio.h" + +static u32 prop_buf[MAX_PROP_LEN / 4]; + +u32 *fsl_get_immr(void) +{ + void *soc; + unsigned long ret = 0; + + soc = find_node_by_devtype(NULL, "soc"); + if (soc) { + int size; + u32 naddr; + + size = getprop(soc, "#address-cells", prop_buf, MAX_PROP_LEN); + if (size == 4) + naddr = prop_buf[0]; + else + naddr = 2; + + if (naddr != 1 && naddr != 2) + goto err; + + size = getprop(soc, "ranges", prop_buf, MAX_PROP_LEN); + + if (size < 12) + goto err; + if (prop_buf[0] != 0) + goto err; + if (naddr == 2 && prop_buf[1] != 0) + goto err; + + if (!dt_xlate_addr(soc, prop_buf + naddr, 8, &ret)) + ret = 0; + } + +err: + if (!ret) + printf("fsl_get_immr: Failed to find immr base\r\n"); + + return (u32 *)ret; +} -- cgit v1.2.3