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authorKumar Gala <galak@freescale.com>2005-09-03 15:55:46 -0700
committerLinus Torvalds <torvalds@evo.osdl.org>2005-09-05 00:05:58 -0700
commit88adfe70c667c9e8fe5ec68eba78af566b539e24 (patch)
treed5aab7e39596b537bcc202ed9b20e4405eccc57e
parentfa71f0e0f541e65280fdb9d60b142012f1951b7c (diff)
[PATCH] ppc32: ppc_sys system on chip identification additions
Add the ability to identify an SOC by a name and id. There are cases in which the integer identifier is not sufficient to specify a specific SOC. In these cases we can use a string to further qualify the match. Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com> Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--arch/ppc/syslib/ppc_sys.c52
-rw-r--r--include/asm-ppc/ppc_sys.h1
2 files changed, 52 insertions, 1 deletions
diff --git a/arch/ppc/syslib/ppc_sys.c b/arch/ppc/syslib/ppc_sys.c
index 87920235256..52ba0c68078 100644
--- a/arch/ppc/syslib/ppc_sys.c
+++ b/arch/ppc/syslib/ppc_sys.c
@@ -6,6 +6,7 @@
* Maintainer: Kumar Gala <kumar.gala@freescale.com>
*
* Copyright 2005 Freescale Semiconductor Inc.
+ * Copyright 2005 MontaVista, Inc. by Vitaly Bordug <vbordug@ru.mvista.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -35,10 +36,59 @@ void __init identify_ppc_sys_by_id(u32 id)
void __init identify_ppc_sys_by_name(char *name)
{
- /* TODO */
+ unsigned int i = 0;
+ while (ppc_sys_specs[i].ppc_sys_name[0])
+ {
+ if (!strcmp(ppc_sys_specs[i].ppc_sys_name, name))
+ break;
+ i++;
+ }
+ cur_ppc_sys_spec = &ppc_sys_specs[i];
return;
}
+static int __init count_sys_specs(void)
+{
+ int i = 0;
+ while (ppc_sys_specs[i].ppc_sys_name[0])
+ i++;
+ return i;
+}
+
+static int __init find_chip_by_name_and_id(char *name, u32 id)
+{
+ int ret = -1;
+ unsigned int i = 0;
+ unsigned int j = 0;
+ unsigned int dups = 0;
+
+ unsigned char matched[count_sys_specs()];
+
+ while (ppc_sys_specs[i].ppc_sys_name[0]) {
+ if (!strcmp(ppc_sys_specs[i].ppc_sys_name, name))
+ matched[j++] = i;
+ i++;
+ }
+ if (j != 0) {
+ for (i = 0; i < j; i++) {
+ if ((ppc_sys_specs[matched[i]].mask & id) ==
+ ppc_sys_specs[matched[i]].value) {
+ ret = matched[i];
+ dups++;
+ }
+ }
+ ret = (dups == 1) ? ret : (-1 * dups);
+ }
+ return ret;
+}
+
+void __init identify_ppc_sys_by_name_and_id(char *name, u32 id)
+{
+ int i = find_chip_by_name_and_id(name, id);
+ BUG_ON(i < 0);
+ cur_ppc_sys_spec = &ppc_sys_specs[i];
+}
+
/* Update all memory resources by paddr, call before platform_device_register */
void __init
ppc_sys_fixup_mem_resource(struct platform_device *pdev, phys_addr_t paddr)
diff --git a/include/asm-ppc/ppc_sys.h b/include/asm-ppc/ppc_sys.h
index 01acf75735f..048f7c8596e 100644
--- a/include/asm-ppc/ppc_sys.h
+++ b/include/asm-ppc/ppc_sys.h
@@ -52,6 +52,7 @@ extern struct ppc_sys_spec *cur_ppc_sys_spec;
/* determine which specific SOC we are */
extern void identify_ppc_sys_by_id(u32 id) __init;
extern void identify_ppc_sys_by_name(char *name) __init;
+extern void identify_ppc_sys_by_name_and_id(char *name, u32 id) __init;
/* describes all devices that may exist in a given family of processors */
extern struct platform_device ppc_sys_platform_devices[];