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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/mips/mti-malta/malta-memory.c
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/mips/mti-malta/malta-memory.c')
-rw-r--r--kernel/arch/mips/mti-malta/malta-memory.c156
1 files changed, 2 insertions, 154 deletions
diff --git a/kernel/arch/mips/mti-malta/malta-memory.c b/kernel/arch/mips/mti-malta/malta-memory.c
index b769657be..d5f8dae6a 100644
--- a/kernel/arch/mips/mti-malta/malta-memory.c
+++ b/kernel/arch/mips/mti-malta/malta-memory.c
@@ -21,147 +21,20 @@
#include <asm/sections.h>
#include <asm/fw/fw.h>
-static fw_memblock_t mdesc[FW_MAX_MEMBLOCKS];
-
/* determined physical memory size, not overridden by command line args */
unsigned long physical_memsize = 0L;
-fw_memblock_t * __init fw_getmdesc(int eva)
-{
- char *memsize_str, *ememsize_str = NULL, *ptr;
- unsigned long memsize = 0, ememsize = 0;
- static char cmdline[COMMAND_LINE_SIZE] __initdata;
- int tmp;
-
- /* otherwise look in the environment */
-
- memsize_str = fw_getenv("memsize");
- if (memsize_str) {
- tmp = kstrtoul(memsize_str, 0, &memsize);
- if (tmp)
- pr_warn("Failed to read the 'memsize' env variable.\n");
- }
- if (eva) {
- /* Look for ememsize for EVA */
- ememsize_str = fw_getenv("ememsize");
- if (ememsize_str) {
- tmp = kstrtoul(ememsize_str, 0, &ememsize);
- if (tmp)
- pr_warn("Failed to read the 'ememsize' env variable.\n");
- }
- }
- if (!memsize && !ememsize) {
- pr_warn("memsize not set in YAMON, set to default (32Mb)\n");
- physical_memsize = 0x02000000;
- } else {
- if (memsize > (256 << 20)) { /* memsize should be capped to 256M */
- pr_warn("Unsupported memsize value (0x%lx) detected! "
- "Using 0x10000000 (256M) instead\n",
- memsize);
- memsize = 256 << 20;
- }
- /* If ememsize is set, then set physical_memsize to that */
- physical_memsize = ememsize ? : memsize;
- }
-
-#ifdef CONFIG_CPU_BIG_ENDIAN
- /* SOC-it swaps, or perhaps doesn't swap, when DMA'ing the last
- word of physical memory */
- physical_memsize -= PAGE_SIZE;
-#endif
-
- /* Check the command line for a memsize directive that overrides
- the physical/default amount */
- strcpy(cmdline, arcs_cmdline);
- ptr = strstr(cmdline, "memsize=");
- if (ptr && (ptr != cmdline) && (*(ptr - 1) != ' '))
- ptr = strstr(ptr, " memsize=");
- /* And now look for ememsize */
- if (eva) {
- ptr = strstr(cmdline, "ememsize=");
- if (ptr && (ptr != cmdline) && (*(ptr - 1) != ' '))
- ptr = strstr(ptr, " ememsize=");
- }
-
- if (ptr)
- memsize = memparse(ptr + 8 + (eva ? 1 : 0), &ptr);
- else
- memsize = physical_memsize;
-
- /* Last 64K for HIGHMEM arithmetics */
- if (memsize > 0x7fff0000)
- memsize = 0x7fff0000;
-
- memset(mdesc, 0, sizeof(mdesc));
-
- mdesc[0].type = fw_dontuse;
- mdesc[0].base = PHYS_OFFSET;
- mdesc[0].size = 0x00001000;
-
- mdesc[1].type = fw_code;
- mdesc[1].base = mdesc[0].base + 0x00001000UL;
- mdesc[1].size = 0x000ef000;
-
- /*
- * The area 0x000f0000-0x000fffff is allocated for BIOS memory by the
- * south bridge and PCI access always forwarded to the ISA Bus and
- * BIOSCS# is always generated.
- * This mean that this area can't be used as DMA memory for PCI
- * devices.
- */
- mdesc[2].type = fw_dontuse;
- mdesc[2].base = mdesc[0].base + 0x000f0000UL;
- mdesc[2].size = 0x00010000;
-
- mdesc[3].type = fw_dontuse;
- mdesc[3].base = mdesc[0].base + 0x00100000UL;
- mdesc[3].size = CPHYSADDR(PFN_ALIGN((unsigned long)&_end)) -
- 0x00100000UL;
-
- mdesc[4].type = fw_free;
- mdesc[4].base = mdesc[0].base + CPHYSADDR(PFN_ALIGN(&_end));
- mdesc[4].size = memsize - CPHYSADDR(mdesc[4].base);
-
- return &mdesc[0];
-}
-
static void free_init_pages_eva_malta(void *begin, void *end)
{
free_init_pages("unused kernel", __pa_symbol((unsigned long *)begin),
__pa_symbol((unsigned long *)end));
}
-static int __init fw_memtype_classify(unsigned int type)
-{
- switch (type) {
- case fw_free:
- return BOOT_MEM_RAM;
- case fw_code:
- return BOOT_MEM_ROM_DATA;
- default:
- return BOOT_MEM_RESERVED;
- }
-}
-
void __init fw_meminit(void)
{
- fw_memblock_t *p;
-
- p = fw_getmdesc(config_enabled(CONFIG_EVA));
- free_init_pages_eva = (config_enabled(CONFIG_EVA) ?
- free_init_pages_eva_malta : NULL);
-
- while (p->size) {
- long type;
- unsigned long base, size;
-
- type = fw_memtype_classify(p->type);
- base = p->base;
- size = p->size;
+ bool eva = config_enabled(CONFIG_EVA);
- add_memory_region(base, size, type);
- p++;
- }
+ free_init_pages_eva = eva ? free_init_pages_eva_malta : NULL;
}
void __init prom_free_prom_memory(void)
@@ -179,31 +52,6 @@ void __init prom_free_prom_memory(void)
}
}
-unsigned platform_maar_init(unsigned num_pairs)
-{
- phys_addr_t mem_end = (physical_memsize & ~0xffffull) - 1;
- struct maar_config cfg[] = {
- /* DRAM preceding I/O */
- { 0x00000000, 0x0fffffff, MIPS_MAAR_S },
-
- /* DRAM following I/O */
- { 0x20000000, mem_end, MIPS_MAAR_S },
-
- /* DRAM alias in upper half of physical */
- { 0x80000000, 0x80000000 + mem_end, MIPS_MAAR_S },
- };
- unsigned i, num_cfg = ARRAY_SIZE(cfg);
-
- /* If DRAM fits before I/O, drop the region following it */
- if (physical_memsize <= 0x10000000) {
- num_cfg--;
- for (i = 1; i < num_cfg; i++)
- cfg[i] = cfg[i + 1];
- }
-
- return maar_config(cfg, num_cfg, num_pairs);
-}
-
phys_addr_t mips_cdmm_phys_base(void)
{
/* This address is "typically unused" */