diff mbox series

[v1,2/8] MIPS: fw: Record prom memory

Message ID 20190819142313.3535-3-jiaxun.yang@flygoat.com (mailing list archive)
State Accepted
Delegated to: Paul Burton
Headers show
Series MIPS: Drop boot_mem_map | expand

Commit Message

Jiaxun Yang Aug. 19, 2019, 2:23 p.m. UTC 
boot_mem_map is nolonger exist so we need to maintain a list
of prom memory by ourselves.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
 arch/mips/fw/arc/memory.c | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/arch/mips/fw/arc/memory.c b/arch/mips/fw/arc/memory.c
index 429b7f8d2aeb..09c69a23f908 100644
--- a/arch/mips/fw/arc/memory.c
+++ b/arch/mips/fw/arc/memory.c
@@ -27,6 +27,11 @@ 
 
 #undef DEBUG
 
+#define MAX_PROM_MEM 5
+static phys_addr_t prom_mem_base[MAX_PROM_MEM] __initdata;
+static phys_addr_t prom_mem_size[MAX_PROM_MEM] __initdata;
+static unsigned int nr_prom_mem __initdata;
+
 /*
  * For ARC firmware memory functions the unit of meassuring memory is always
  * a 4k page of memory
@@ -129,6 +134,7 @@  void __init prom_meminit(void)
 	}
 #endif
 
+	nr_prom_mem = 0;
 	p = PROM_NULL_MDESC;
 	while ((p = ArcGetMemoryDescriptor(p))) {
 		unsigned long base, size;
@@ -139,6 +145,16 @@  void __init prom_meminit(void)
 		type = prom_memtype_classify(p->type);
 
 		add_memory_region(base, size, type);
+
+		if (type == BOOT_MEM_ROM_DATA) {
+			if (nr_prom_mem >= 5) {
+				pr_err("Too many ROM DATA regions");
+				continue;
+			}
+			prom_mem_base[nr_prom_mem] = base;
+			prom_mem_size[nr_prom_mem] = size;
+			nr_prom_mem++;
+		}
 	}
 }
 
@@ -150,12 +166,8 @@  void __init prom_free_prom_memory(void)
 	if (prom_flags & PROM_FLAG_DONT_FREE_TEMP)
 		return;
 
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		if (boot_mem_map.map[i].type != BOOT_MEM_ROM_DATA)
-			continue;
-
-		addr = boot_mem_map.map[i].addr;
+	for (i = 0; i < nr_prom_mem; i++) {
 		free_init_pages("prom memory",
-				addr, addr + boot_mem_map.map[i].size);
+			prom_mem_base[i], prom_mem_base[i] + prom_mem_size[i]);
 	}
 }