[PATCH 1/4] RealView: Add default memory configuration
Catalin Marinas
catalin.marinas at arm.com
Thu Oct 15 08:21:52 EDT 2009
This patch adds a realview_fixup() function called during booting to set
up the memory banks. This way there is no need to pass a "mem=" argument
on the kernel command line.
Signed-off-by: Catalin Marinas <catalin.marinas at arm.com>
---
arch/arm/mach-realview/core.c | 21 +++++++++++++++++++++
arch/arm/mach-realview/core.h | 5 +++++
arch/arm/mach-realview/realview_eb.c | 1 +
arch/arm/mach-realview/realview_pb1176.c | 13 +++++++++++++
arch/arm/mach-realview/realview_pb11mp.c | 1 +
arch/arm/mach-realview/realview_pba8.c | 1 +
arch/arm/mach-realview/realview_pbx.c | 1 +
7 files changed, 43 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index a2083b6..c21b0fd 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -788,3 +788,24 @@ void __init realview_timer_init(unsigned int timer_irq)
realview_clocksource_init();
realview_clockevents_init(timer_irq);
}
+
+/*
+ * Setup the memory banks.
+ */
+void realview_fixup(struct machine_desc *mdesc, struct tag *tags, char **from,
+ struct meminfo *meminfo)
+{
+ /*
+ * Most RealView platforms have 512MB contiguous RAM at 0x70000000.
+ * Half of this is mirrored at 0.
+ */
+#ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
+ meminfo->bank[0].start = 0x70000000;
+ meminfo->bank[0].size = SZ_512M;
+ meminfo->nr_banks = 1;
+#else
+ meminfo->bank[0].start = 0;
+ meminfo->bank[0].size = SZ_256M;
+ meminfo->nr_banks = 1;
+#endif
+}
diff --git a/arch/arm/mach-realview/core.h b/arch/arm/mach-realview/core.h
index 46cd6ac..1398854 100644
--- a/arch/arm/mach-realview/core.h
+++ b/arch/arm/mach-realview/core.h
@@ -25,6 +25,7 @@
#include <linux/amba/bus.h>
#include <linux/io.h>
+#include <asm/setup.h>
#include <asm/leds.h>
#define AMBA_DEVICE(name,busid,base,plat) \
@@ -44,6 +45,8 @@ static struct amba_device name##_device = { \
/* .dma = base##_DMA,*/ \
}
+struct machine_desc;
+
extern struct platform_device realview_flash_device;
extern struct platform_device realview_cf_device;
extern struct platform_device realview_i2c_device;
@@ -61,5 +64,7 @@ extern void realview_timer_init(unsigned int timer_irq);
extern int realview_flash_register(struct resource *res, u32 num);
extern int realview_eth_register(const char *name, struct resource *res);
extern int realview_usb_register(struct resource *res);
+extern void realview_fixup(struct machine_desc *mdesc, struct tag *tags,
+ char **from, struct meminfo *meminfo);
#endif
diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c
index 1d65e64..917f8ca 100644
--- a/arch/arm/mach-realview/realview_eb.c
+++ b/arch/arm/mach-realview/realview_eb.c
@@ -415,6 +415,7 @@ MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
.phys_io = REALVIEW_EB_UART0_BASE,
.io_pg_offst = (IO_ADDRESS(REALVIEW_EB_UART0_BASE) >> 18) & 0xfffc,
.boot_params = PHYS_OFFSET + 0x00000100,
+ .fixup = realview_fixup,
.map_io = realview_eb_map_io,
.init_irq = gic_init_irq,
.timer = &realview_eb_timer,
diff --git a/arch/arm/mach-realview/realview_pb1176.c b/arch/arm/mach-realview/realview_pb1176.c
index 2817fe0..b1cdd37 100644
--- a/arch/arm/mach-realview/realview_pb1176.c
+++ b/arch/arm/mach-realview/realview_pb1176.c
@@ -290,6 +290,18 @@ static struct sys_timer realview_pb1176_timer = {
.init = realview_pb1176_timer_init,
};
+static void realview_pb1176_fixup(struct machine_desc *mdesc,
+ struct tag *tags, char **from,
+ struct meminfo *meminfo)
+{
+ /*
+ * RealView PB1176 only has 128MB of RAM mapped at 0.
+ */
+ meminfo->bank[0].start = 0;
+ meminfo->bank[0].size = SZ_128M;
+ meminfo->nr_banks = 1;
+}
+
static void __init realview_pb1176_init(void)
{
int i;
@@ -320,6 +332,7 @@ MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
.phys_io = REALVIEW_PB1176_UART0_BASE,
.io_pg_offst = (IO_ADDRESS(REALVIEW_PB1176_UART0_BASE) >> 18) & 0xfffc,
.boot_params = PHYS_OFFSET + 0x00000100,
+ .fixup = realview_pb1176_fixup,
.map_io = realview_pb1176_map_io,
.init_irq = gic_init_irq,
.timer = &realview_pb1176_timer,
diff --git a/arch/arm/mach-realview/realview_pb11mp.c b/arch/arm/mach-realview/realview_pb11mp.c
index 94680fc..22726b5 100644
--- a/arch/arm/mach-realview/realview_pb11mp.c
+++ b/arch/arm/mach-realview/realview_pb11mp.c
@@ -331,6 +331,7 @@ MACHINE_START(REALVIEW_PB11MP, "ARM-RealView PB11MPCore")
.phys_io = REALVIEW_PB11MP_UART0_BASE,
.io_pg_offst = (IO_ADDRESS(REALVIEW_PB11MP_UART0_BASE) >> 18) & 0xfffc,
.boot_params = PHYS_OFFSET + 0x00000100,
+ .fixup = realview_fixup,
.map_io = realview_pb11mp_map_io,
.init_irq = gic_init_irq,
.timer = &realview_pb11mp_timer,
diff --git a/arch/arm/mach-realview/realview_pba8.c b/arch/arm/mach-realview/realview_pba8.c
index 941beb2..fe861e9 100644
--- a/arch/arm/mach-realview/realview_pba8.c
+++ b/arch/arm/mach-realview/realview_pba8.c
@@ -298,6 +298,7 @@ MACHINE_START(REALVIEW_PBA8, "ARM-RealView PB-A8")
.phys_io = REALVIEW_PBA8_UART0_BASE,
.io_pg_offst = (IO_ADDRESS(REALVIEW_PBA8_UART0_BASE) >> 18) & 0xfffc,
.boot_params = PHYS_OFFSET + 0x00000100,
+ .fixup = realview_fixup,
.map_io = realview_pba8_map_io,
.init_irq = gic_init_irq,
.timer = &realview_pba8_timer,
diff --git a/arch/arm/mach-realview/realview_pbx.c b/arch/arm/mach-realview/realview_pbx.c
index 7e4bc6c..5d09d8b 100644
--- a/arch/arm/mach-realview/realview_pbx.c
+++ b/arch/arm/mach-realview/realview_pbx.c
@@ -345,6 +345,7 @@ MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
.phys_io = REALVIEW_PBX_UART0_BASE,
.io_pg_offst = (IO_ADDRESS(REALVIEW_PBX_UART0_BASE) >> 18) & 0xfffc,
.boot_params = PHYS_OFFSET + 0x00000100,
+ .fixup = realview_fixup,
.map_io = realview_pbx_map_io,
.init_irq = gic_init_irq,
.timer = &realview_pbx_timer,
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