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Date: Thu, 4 Nov 2010 17:46:13 -0500
From: <Dinh.Nguyen@...escale.com>
To: <linux-kernel@...r.kernel.org>
CC: <linux-arm-kernel@...ts.infradead.org>, <linux@....linux.org.uk>,
<s.hauer@...gutronix.de>, <u.kleine-koenig@...gutronix.de>,
<amit.kucheria@...onical.com>, <eric@...rea.com>,
Dinh Nguyen <Dinh.Nguyen@...escale.com>
Subject: [PATCHv2 2/2] ARM: imx: Add mx53 support to common msl functions.
From: Dinh Nguyen <Dinh.Nguyen@...escale.com>
Add mx53 support to cpu.c and mm.c.
Also change the method to get the silicon version from the
documented IIM SREV register instead of reading the ROM code.
Signed-off-by: Dinh Nguyen <Dinh.Nguyen@...escale.com>
---
arch/arm/mach-mx5/cpu.c | 72 ++++++++++++++++++++++++++++++++--------------
arch/arm/mach-mx5/mm.c | 52 ++++++++++++++++++++++++++++++++--
2 files changed, 99 insertions(+), 25 deletions(-)
diff --git a/arch/arm/mach-mx5/cpu.c b/arch/arm/mach-mx5/cpu.c
index eaacb6e..a13d18b 100644
--- a/arch/arm/mach-mx5/cpu.c
+++ b/arch/arm/mach-mx5/cpu.c
@@ -1,5 +1,5 @@
/*
- * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved.
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
@@ -20,37 +20,35 @@
static int cpu_silicon_rev = -1;
-#define SI_REV 0x48
+#define SI_REV 0x24
static void query_silicon_parameter(void)
{
- void __iomem *rom = ioremap(MX51_IROM_BASE_ADDR, MX51_IROM_SIZE);
+ void __iomem *iim_base;
u32 rev;
- if (!rom) {
- cpu_silicon_rev = -EINVAL;
- return;
- }
+ if (cpu_is_mx51())
+ iim_base = MX51_IO_ADDRESS(MX51_IIM_BASE_ADDR);
+ else if (cpu_is_mx53())
+ iim_base = MX53_IO_ADDRESS(MX53_IIM_BASE_ADDR);
- rev = readl(rom + SI_REV);
+ rev = readl(iim_base + SI_REV) & 0xff;
switch (rev) {
- case 0x1:
- cpu_silicon_rev = MX51_CHIP_REV_1_0;
- break;
- case 0x2:
- cpu_silicon_rev = MX51_CHIP_REV_1_1;
+ case 0x0:
+ if (cpu_is_mx51())
+ cpu_silicon_rev = MX51_CHIP_REV_2_0;
+ else if (cpu_is_mx53())
+ cpu_silicon_rev = MX53_CHIP_REV_1_0;
break;
case 0x10:
- cpu_silicon_rev = MX51_CHIP_REV_2_0;
- break;
- case 0x20:
- cpu_silicon_rev = MX51_CHIP_REV_3_0;
+ if (cpu_is_mx51())
+ cpu_silicon_rev = MX51_CHIP_REV_3_0;
+ else if (cpu_is_mx53())
+ cpu_silicon_rev = MX53_CHIP_REV_2_0;
break;
default:
cpu_silicon_rev = 0;
}
-
- iounmap(rom);
}
/*
@@ -89,15 +87,39 @@ static int __init mx51_neon_fixup(void)
late_initcall(mx51_neon_fixup);
#endif
+/*
+ * Returns:
+ * the silicon revision of the cpu
+ * -EINVAL - not a mx53
+ */
+int mx53_revision(void)
+{
+ if (!cpu_is_mx53())
+ return -EINVAL;
+
+ if (cpu_silicon_rev == -1)
+ query_silicon_parameter();
+
+ return cpu_silicon_rev;
+}
+EXPORT_SYMBOL(mx53_revision);
+
static int __init post_cpu_init(void)
{
unsigned int reg;
void __iomem *base;
+ void __iomem *aips_addr;
- if (!cpu_is_mx51())
+ if (!cpu_is_mx51() || !cpu_is_mx53())
return 0;
- base = MX51_IO_ADDRESS(MX51_AIPS1_BASE_ADDR);
+ if (cpu_is_mx51())
+ aips_addr = MX51_IO_ADDRESS(MX51_AIPS1_BASE_ADDR);
+ else if (cpu_is_mx53())
+ aips_addr = MX53_IO_ADDRESS(MX53_AIPS1_BASE_ADDR);
+
+ base = ioremap((unsigned long)aips_addr, SZ_4K);
+
__raw_writel(0x0, base + 0x40);
__raw_writel(0x0, base + 0x44);
__raw_writel(0x0, base + 0x48);
@@ -105,7 +127,13 @@ static int __init post_cpu_init(void)
reg = __raw_readl(base + 0x50) & 0x00FFFFFF;
__raw_writel(reg, base + 0x50);
- base = MX51_IO_ADDRESS(MX51_AIPS2_BASE_ADDR);
+ if (cpu_is_mx51())
+ aips_addr = MX51_IO_ADDRESS(MX51_AIPS2_BASE_ADDR);
+ else if (cpu_is_mx53())
+ aips_addr = MX53_IO_ADDRESS(MX53_AIPS2_BASE_ADDR);
+
+ base = ioremap((unsigned long)aips_addr, SZ_4K);
+
__raw_writel(0x0, base + 0x40);
__raw_writel(0x0, base + 0x44);
__raw_writel(0x0, base + 0x48);
diff --git a/arch/arm/mach-mx5/mm.c b/arch/arm/mach-mx5/mm.c
index bc3f30d..d2b9f2c 100644
--- a/arch/arm/mach-mx5/mm.c
+++ b/arch/arm/mach-mx5/mm.c
@@ -1,5 +1,5 @@
/*
- * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved.
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
@@ -23,7 +23,7 @@
/*
* Define the MX51 memory map.
*/
-static struct map_desc mxc_io_desc[] __initdata = {
+static struct map_desc mx51_mxc_io_desc[] __initdata = {
{
.virtual = MX51_IRAM_BASE_ADDR_VIRT,
.pfn = __phys_to_pfn(MX51_IRAM_BASE_ADDR),
@@ -53,6 +53,28 @@ static struct map_desc mxc_io_desc[] __initdata = {
};
/*
+ * Define the MX53 memory map.
+ */
+static struct map_desc mx53_mxc_io_desc[] __initdata = {
+ {
+ .virtual = MX53_AIPS1_BASE_ADDR_VIRT,
+ .pfn = __phys_to_pfn(MX53_AIPS1_BASE_ADDR),
+ .length = MX53_AIPS1_SIZE,
+ .type = MT_DEVICE
+ }, {
+ .virtual = MX53_SPBA0_BASE_ADDR_VIRT,
+ .pfn = __phys_to_pfn(MX53_SPBA0_BASE_ADDR),
+ .length = MX53_SPBA0_SIZE,
+ .type = MT_DEVICE
+ }, {
+ .virtual = MX53_AIPS2_BASE_ADDR_VIRT,
+ .pfn = __phys_to_pfn(MX53_AIPS2_BASE_ADDR),
+ .length = MX53_AIPS2_SIZE,
+ .type = MT_DEVICE
+ },
+};
+
+/*
* This function initializes the memory map. It is called during the
* system startup to create static physical to virtual memory mappings
* for the IO modules.
@@ -62,10 +84,19 @@ void __init mx51_map_io(void)
mxc_set_cpu_type(MXC_CPU_MX51);
mxc_iomux_v3_init(MX51_IO_ADDRESS(MX51_IOMUXC_BASE_ADDR));
mxc_arch_reset_init(MX51_IO_ADDRESS(MX51_WDOG_BASE_ADDR));
- iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
+ iotable_init(mx51_mxc_io_desc, ARRAY_SIZE(mx51_mxc_io_desc));
+}
+
+void __init mx53_map_io(void)
+{
+ mxc_set_cpu_type(MXC_CPU_MX53);
+ mxc_iomux_v3_init(MX53_IO_ADDRESS(MX53_IOMUXC_BASE_ADDR));
+ mxc_arch_reset_init(MX53_IO_ADDRESS(MX53_WDOG_BASE_ADDR));
+ iotable_init(mx53_mxc_io_desc, ARRAY_SIZE(mx53_mxc_io_desc));
}
int imx51_register_gpios(void);
+int imx53_register_gpios(void);
void __init mx51_init_irq(void)
{
@@ -84,3 +115,18 @@ void __init mx51_init_irq(void)
tzic_init_irq(tzic_virt);
imx51_register_gpios();
}
+
+void __init mx53_init_irq(void)
+{
+ unsigned long tzic_addr;
+ void __iomem *tzic_virt;
+
+ tzic_addr = MX53_TZIC_BASE_ADDR;
+
+ tzic_virt = ioremap(tzic_addr, SZ_16K);
+ if (!tzic_virt)
+ panic("unable to map TZIC interrupt controller\n");
+
+ tzic_init_irq(tzic_virt);
+ imx53_register_gpios();
+}
--
1.6.0.4
--
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