Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 65 insertions, 0 deletions

diff --git a/arch/c6x/mm/init.c b/arch/c6x/mm/init.c
new file mode 100644
index 000000000..a97e51a3e
--- /dev/null
+++ b/arch/c6x/mm/init.c
@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  Port on Texas Instruments TMS320C6x architecture
+ *
+ *  Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
+ *  Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
+ */
+#include <linux/mm.h>
+#include <linux/swap.h>
+#include <linux/module.h>
+#include <linux/memblock.h>
+#ifdef CONFIG_BLK_DEV_RAM
+#include <linux/blkdev.h>
+#endif
+#include <linux/initrd.h>
+
+#include <asm/sections.h>
+#include <linux/uaccess.h>
+
+/*
+ * ZERO_PAGE is a special page that is used for zero-initialized
+ * data and COW.
+ */
+unsigned long empty_zero_page;
+EXPORT_SYMBOL(empty_zero_page);
+
+/*
+ * paging_init() continues the virtual memory environment setup which
+ * was begun by the code in arch/head.S.
+ * The parameters are pointers to where to stick the starting and ending
+ * addresses  of available kernel virtual memory.
+ */
+void __init paging_init(void)
+{
+	struct pglist_data *pgdat = NODE_DATA(0);
+	unsigned long max_zone_pfn[MAX_NR_ZONES] = {0, };
+
+	empty_zero_page      = (unsigned long) memblock_alloc(PAGE_SIZE,
+							      PAGE_SIZE);
+	if (!empty_zero_page)
+		panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
+		      __func__, PAGE_SIZE, PAGE_SIZE);
+
+	/*
+	 * Set up user data space
+	 */
+	set_fs(KERNEL_DS);
+
+	/*
+	 * Define zones
+	 */
+	max_zone_pfn[ZONE_NORMAL] = memory_end >> PAGE_SHIFT;
+
+	free_area_init(max_zone_pfn);
+}
+
+void __init mem_init(void)
+{
+	high_memory = (void *)(memory_end & PAGE_MASK);
+
+	/* this will put all memory onto the freelists */
+	memblock_free_all();
+
+	mem_init_print_info(NULL);
+}