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Subject[PATCH] ppc32: ppc_sys system on chip identification additions (updated)
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>

---
commit 57c213c1a2e50b06fe69b63bc596cf7cbef9105e
tree 194c870fad7f29e7a97d787b0a895c7ed59b2f10
parent 4005c652e0887d29554a73ff661a2365ebb7691a
author Kumar K. Gala <kumar.gala@freescale.com> Fri, 26 Aug 2005 13:46:53 -0500
committer Kumar K. Gala <kumar.gala@freescale.com> Fri, 26 Aug 2005 13:46:53 -0500

arch/ppc/syslib/ppc_sys.c | 52 ++++++++++++++++++++++++++++++++++++++++++++-
include/asm-ppc/ppc_sys.h | 1 +
2 files changed, 52 insertions(+), 1 deletions(-)

diff --git a/arch/ppc/syslib/ppc_sys.c b/arch/ppc/syslib/ppc_sys.c
--- 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
@@ -35,8 +36,57 @@ void __init identify_ppc_sys_by_id(u32 i

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 */
diff --git a/include/asm-ppc/ppc_sys.h b/include/asm-ppc/ppc_sys.h
--- 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_
/* 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[];
-
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