adm5120: drop 3.8 and 3.14 support

[openwrt/svn-archive/archive.git] / target / linux / adm5120 / files-3.14 / arch / mips / adm5120 / common / memory.c

diff --git a/target/linux/adm5120/files-3.14/arch/mips/adm5120/common/memory.c b/target/linux/adm5120/files-3.14/arch/mips/adm5120/common/memory.c
deleted file mode 100644 (file)
index d07266f..0000000
--- a/target/linux/adm5120/files-3.14/arch/mips/adm5120/common/memory.c
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
- *  Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
- *
- *  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 <linux/init.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/io.h>
-
-#include <asm/bootinfo.h>
-#include <asm/addrspace.h>
-
-#include <asm/mach-adm5120/adm5120_info.h>
-#include <asm/mach-adm5120/adm5120_defs.h>
-#include <asm/mach-adm5120/adm5120_switch.h>
-#include <asm/mach-adm5120/adm5120_mpmc.h>
-
-#ifdef DEBUG
-#  define mem_dbg(f, a...)     printk(KERN_INFO "mem_detect: " f, ## a)
-#else
-#  define mem_dbg(f, a...)
-#endif
-
-unsigned long adm5120_memsize;
-
-#define MEM_READL(a)           __raw_readl((void __iomem *)(a))
-#define MEM_WRITEL(a, v)       __raw_writel((v), (void __iomem *)(a))
-
-static int __init mem_check_pattern(u8 *addr, unsigned long offs)
-{
-       u32 *p1 = (u32 *)addr;
-       u32 *p2 = (u32 *)(addr+offs);
-       u32 t, u, v;
-
-       /* save original value */
-       t = MEM_READL(p1);
-
-       u = MEM_READL(p2);
-       if (t != u)
-               return 0;
-
-       v = 0x55555555;
-       if (u == v)
-               v = 0xAAAAAAAA;
-
-       mem_dbg("write 0x%08X to 0x%08lX\n", v, (unsigned long)p1);
-
-       MEM_WRITEL(p1, v);
-       adm5120_ndelay(1000);
-       u = MEM_READL(p2);
-
-       mem_dbg("pattern at 0x%08lX is 0x%08X\n", (unsigned long)p2, u);
-
-       /* restore original value */
-       MEM_WRITEL(p1, t);
-
-       return (v == u);
-}
-
-static void __init adm5120_detect_memsize(void)
-{
-       u32     memctrl;
-       u32     size, maxsize;
-       u8      *p;
-
-       memctrl = SW_READ_REG(SWITCH_REG_MEMCTRL);
-       switch (memctrl & MEMCTRL_SDRS_MASK) {
-       case MEMCTRL_SDRS_4M:
-               maxsize = 4 << 20;
-               break;
-       case MEMCTRL_SDRS_8M:
-               maxsize = 8 << 20;
-               break;
-       case MEMCTRL_SDRS_16M:
-               maxsize = 16 << 20;
-               break;
-       default:
-               maxsize = 64 << 20;
-               break;
-       }
-
-       mem_dbg("checking for %uMB chip in 1st bank\n", maxsize >> 20);
-
-       /* detect size of the 1st SDRAM bank */
-       p = (u8 *)KSEG1ADDR(0);
-       for (size = 2<<20; size <= (maxsize >> 1); size <<= 1) {
-               if (mem_check_pattern(p, size)) {
-                       /* mirrored address */
-                       mem_dbg("mirrored data found at offset 0x%08X\n", size);
-                       break;
-               }
-       }
-
-       mem_dbg("chip size in 1st bank is %uMB\n", size >> 20);
-       adm5120_memsize = size;
-
-       if (size != maxsize)
-               /* 2nd bank is not supported */
-               goto out;
-
-       if ((memctrl & MEMCTRL_SDR1_ENABLE) == 0)
-               /* 2nd bank is disabled */
-               goto out;
-
-       /*
-        * some bootloaders enable 2nd bank, even if the 2nd SDRAM chip
-        * are missing.
-        */
-       mem_dbg("check presence of 2nd bank\n");
-
-       p = (u8 *)KSEG1ADDR(maxsize+size-4);
-       if (mem_check_pattern(p, 0))
-               adm5120_memsize += size;
-
-       if (maxsize != size) {
-               /* adjusting MECTRL register */
-               memctrl &= ~(MEMCTRL_SDRS_MASK);
-               switch (size>>20) {
-               case 4:
-                       memctrl |= MEMCTRL_SDRS_4M;
-                       break;
-               case 8:
-                       memctrl |= MEMCTRL_SDRS_8M;
-                       break;
-               case 16:
-                       memctrl |= MEMCTRL_SDRS_16M;
-                       break;
-               default:
-                       memctrl |= MEMCTRL_SDRS_64M;
-                       break;
-               }
-               SW_WRITE_REG(SWITCH_REG_MEMCTRL, memctrl);
-       }
-
-out:
-       mem_dbg("%dx%uMB memory found\n", (adm5120_memsize == size) ? 1 : 2 ,
-               size>>20);
-}
-
-void __init adm5120_mem_init(void)
-{
-       adm5120_detect_memsize();
-       add_memory_region(0, adm5120_memsize, BOOT_MEM_RAM);
-}