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-rw-r--r--arch/arm/mach-realview/Kconfig5
-rw-r--r--arch/arm/mach-realview/core.c42
-rw-r--r--arch/arm/mach-realview/core.h6
-rw-r--r--arch/arm/mach-realview/include/mach/board-pb1176.h5
-rw-r--r--arch/arm/mach-realview/include/mach/board-pb11mp.h12
-rw-r--r--arch/arm/mach-realview/include/mach/memory.h49
-rw-r--r--arch/arm/mach-realview/include/mach/platform.h15
-rw-r--r--arch/arm/mach-realview/include/mach/system.h10
-rw-r--r--arch/arm/mach-realview/platsmp.c5
-rw-r--r--arch/arm/mach-realview/realview_eb.c1
-rw-r--r--arch/arm/mach-realview/realview_pb1176.c24
-rw-r--r--arch/arm/mach-realview/realview_pb11mp.c17
-rw-r--r--arch/arm/mach-realview/realview_pba8.c1
-rw-r--r--arch/arm/mach-realview/realview_pbx.c21
14 files changed, 187 insertions, 26 deletions
diff --git a/arch/arm/mach-realview/Kconfig b/arch/arm/mach-realview/Kconfig
index dfc9b0bc6eb..c48e1f2c334 100644
--- a/arch/arm/mach-realview/Kconfig
+++ b/arch/arm/mach-realview/Kconfig
@@ -70,6 +70,8 @@ config MACH_REALVIEW_PBX
bool "Support RealView/PBX platform"
select ARM_GIC
select HAVE_PATA_PLATFORM
+ select ARCH_SPARSEMEM_ENABLE if CPU_V7 && !HIGH_PHYS_OFFSET
+ select ZONE_DMA if SPARSEMEM
help
Include support for the ARM(R) RealView PBX platform.
@@ -82,6 +84,7 @@ config REALVIEW_HIGH_PHYS_OFFSET
0x70000000, 256MB of which being mirrored at 0x00000000. If
the board supports 512MB of RAM, this option allows the
memory to be accessed contiguously at the high physical
- offset.
+ offset. On the PBX board, disabling this option allows 1GB of
+ RAM to be used with SPARSEMEM.
endmenu
diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index a2083b60e3f..9f293438e02 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -59,6 +59,25 @@
/* used by entry-macro.S and platsmp.c */
void __iomem *gic_cpu_base_addr;
+#ifdef CONFIG_ZONE_DMA
+/*
+ * Adjust the zones if there are restrictions for DMA access.
+ */
+void __init realview_adjust_zones(int node, unsigned long *size,
+ unsigned long *hole)
+{
+ unsigned long dma_size = SZ_256M >> PAGE_SHIFT;
+
+ if (!machine_is_realview_pbx() || node || (size[0] <= dma_size))
+ return;
+
+ size[ZONE_NORMAL] = size[0] - dma_size;
+ size[ZONE_DMA] = dma_size;
+ hole[ZONE_NORMAL] = hole[0];
+ hole[ZONE_DMA] = 0;
+}
+#endif
+
/*
* This is the RealView sched_clock implementation. This has
* a resolution of 41.7ns, and a maximum value of about 179s.
@@ -543,7 +562,7 @@ static int realview_clcd_setup(struct clcd_fb *fb)
fb->panel = realview_clcd_panel();
fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev, framesize,
- &dma, GFP_KERNEL);
+ &dma, GFP_KERNEL | GFP_DMA);
if (!fb->fb.screen_base) {
printk(KERN_ERR "CLCD: unable to map framebuffer\n");
return -ENOMEM;
@@ -788,3 +807,24 @@ 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 46cd6acb4d4..781bca68a9f 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 +64,8 @@ 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);
+extern void (*realview_reset)(char);
#endif
diff --git a/arch/arm/mach-realview/include/mach/board-pb1176.h b/arch/arm/mach-realview/include/mach/board-pb1176.h
index 98f8e7eeacc..34b80b7d40b 100644
--- a/arch/arm/mach-realview/include/mach/board-pb1176.h
+++ b/arch/arm/mach-realview/include/mach/board-pb1176.h
@@ -73,4 +73,9 @@
#define REALVIEW_PB1176_GIC_DIST_BASE 0x10041000 /* GIC distributor, on FPGA */
#define REALVIEW_PB1176_L220_BASE 0x10110000 /* L220 registers */
+/*
+ * Control register SYS_RESETCTL is set to 1 to force a soft reset
+ */
+#define REALVIEW_PB1176_SYS_LOCKVAL_RSTCTL 0x0100
+
#endif /* __ASM_ARCH_BOARD_PB1176_H */
diff --git a/arch/arm/mach-realview/include/mach/board-pb11mp.h b/arch/arm/mach-realview/include/mach/board-pb11mp.h
index f0d68e0fea0..7abf918b77e 100644
--- a/arch/arm/mach-realview/include/mach/board-pb11mp.h
+++ b/arch/arm/mach-realview/include/mach/board-pb11mp.h
@@ -81,4 +81,16 @@
#define REALVIEW_TC11MP_GIC_DIST_BASE 0x1F001000 /* Test chip interrupt controller distributor */
#define REALVIEW_TC11MP_L220_BASE 0x1F002000 /* L220 registers */
+ /*
+ * Values for REALVIEW_SYS_RESET_CTRL
+ */
+#define REALVIEW_PB11MP_SYS_CTRL_RESET_CONFIGCLR 0x01
+#define REALVIEW_PB11MP_SYS_CTRL_RESET_CONFIGINIT 0x02
+#define REALVIEW_PB11MP_SYS_CTRL_RESET_DLLRESET 0x03
+#define REALVIEW_PB11MP_SYS_CTRL_RESET_PLLRESET 0x04
+#define REALVIEW_PB11MP_SYS_CTRL_RESET_POR 0x05
+#define REALVIEW_PB11MP_SYS_CTRL_RESET_DoC 0x06
+
+#define REALVIEW_PB11MP_SYS_CTRL_LED (1 << 0)
+
#endif /* __ASM_ARCH_BOARD_PB11MP_H */
diff --git a/arch/arm/mach-realview/include/mach/memory.h b/arch/arm/mach-realview/include/mach/memory.h
index 293c30025e7..2417bbcf97f 100644
--- a/arch/arm/mach-realview/include/mach/memory.h
+++ b/arch/arm/mach-realview/include/mach/memory.h
@@ -29,4 +29,53 @@
#define PHYS_OFFSET UL(0x00000000)
#endif
+#if !defined(__ASSEMBLY__) && defined(CONFIG_ZONE_DMA)
+extern void realview_adjust_zones(int node, unsigned long *size,
+ unsigned long *hole);
+#define arch_adjust_zones(node, size, hole) \
+ realview_adjust_zones(node, size, hole)
+
+#define ISA_DMA_THRESHOLD (PHYS_OFFSET + SZ_256M - 1)
+#define MAX_DMA_ADDRESS (PAGE_OFFSET + SZ_256M)
+#endif
+
+#ifdef CONFIG_SPARSEMEM
+
+/*
+ * Sparsemem definitions for RealView PBX.
+ *
+ * The RealView PBX board has another block of 512MB of RAM at 0x20000000,
+ * however only the block at 0x70000000 (or the 256MB mirror at 0x00000000)
+ * may be used for DMA.
+ *
+ * The macros below define a section size of 256MB and a non-linear virtual to
+ * physical mapping:
+ *
+ * 256MB @ 0x00000000 -> PAGE_OFFSET
+ * 512MB @ 0x20000000 -> PAGE_OFFSET + 0x10000000
+ * 256MB @ 0x80000000 -> PAGE_OFFSET + 0x30000000
+ */
+#ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
+#error "SPARSEMEM not available with REALVIEW_HIGH_PHYS_OFFSET"
+#endif
+
+#define MAX_PHYSMEM_BITS 32
+#define SECTION_SIZE_BITS 28
+
+/* bank page offsets */
+#define PAGE_OFFSET1 (PAGE_OFFSET + 0x10000000)
+#define PAGE_OFFSET2 (PAGE_OFFSET + 0x30000000)
+
+#define __phys_to_virt(phys) \
+ ((phys) >= 0x80000000 ? (phys) - 0x80000000 + PAGE_OFFSET2 : \
+ (phys) >= 0x20000000 ? (phys) - 0x20000000 + PAGE_OFFSET1 : \
+ (phys) + PAGE_OFFSET)
+
+#define __virt_to_phys(virt) \
+ ((virt) >= PAGE_OFFSET2 ? (virt) - PAGE_OFFSET2 + 0x80000000 : \
+ (virt) >= PAGE_OFFSET1 ? (virt) - PAGE_OFFSET1 + 0x20000000 : \
+ (virt) - PAGE_OFFSET)
+
+#endif /* CONFIG_SPARSEMEM */
+
#endif
diff --git a/arch/arm/mach-realview/include/mach/platform.h b/arch/arm/mach-realview/include/mach/platform.h
index c8f50835fed..4f46bf71e75 100644
--- a/arch/arm/mach-realview/include/mach/platform.h
+++ b/arch/arm/mach-realview/include/mach/platform.h
@@ -119,19 +119,6 @@
#define REALVIEW_SYS_TEST_OSC3 (REALVIEW_SYS_BASE + REALVIEW_SYS_TEST_OSC3_OFFSET)
#define REALVIEW_SYS_TEST_OSC4 (REALVIEW_SYS_BASE + REALVIEW_SYS_TEST_OSC4_OFFSET)
-/*
- * Values for REALVIEW_SYS_RESET_CTRL
- */
-#define REALVIEW_SYS_CTRL_RESET_CONFIGCLR 0x01
-#define REALVIEW_SYS_CTRL_RESET_CONFIGINIT 0x02
-#define REALVIEW_SYS_CTRL_RESET_DLLRESET 0x03
-#define REALVIEW_SYS_CTRL_RESET_PLLRESET 0x04
-#define REALVIEW_SYS_CTRL_RESET_POR 0x05
-#define REALVIEW_SYS_CTRL_RESET_DoC 0x06
-
-#define REALVIEW_SYS_CTRL_LED (1 << 0)
-
-
/* ------------------------------------------------------------------------
* RealView control registers
* ------------------------------------------------------------------------
@@ -153,7 +140,7 @@
* SYS_CLD, SYS_BOOTCS
*/
#define REALVIEW_SYS_LOCK_LOCKED (1 << 16)
-#define REALVIEW_SYS_LOCKVAL_MASK 0xFFFF /* write 0xA05F to enable write access */
+#define REALVIEW_SYS_LOCKVAL_MASK 0xA05F /* Enable write access */
/*
* REALVIEW_SYS_FLASH
diff --git a/arch/arm/mach-realview/include/mach/system.h b/arch/arm/mach-realview/include/mach/system.h
index 1a15a441e02..a30f2e3ec17 100644
--- a/arch/arm/mach-realview/include/mach/system.h
+++ b/arch/arm/mach-realview/include/mach/system.h
@@ -25,6 +25,8 @@
#include <mach/hardware.h>
#include <mach/platform.h>
+void (*realview_reset)(char mode);
+
static inline void arch_idle(void)
{
/*
@@ -36,16 +38,12 @@ static inline void arch_idle(void)
static inline void arch_reset(char mode, const char *cmd)
{
- void __iomem *hdr_ctrl = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_RESETCTL_OFFSET;
- unsigned int val;
-
/*
* To reset, we hit the on-board reset register
* in the system FPGA
*/
- val = __raw_readl(hdr_ctrl);
- val |= REALVIEW_SYS_CTRL_RESET_CONFIGCLR;
- __raw_writel(val, hdr_ctrl);
+ if (realview_reset)
+ realview_reset(mode);
}
#endif
diff --git a/arch/arm/mach-realview/platsmp.c b/arch/arm/mach-realview/platsmp.c
index a88458b4799..009265818d5 100644
--- a/arch/arm/mach-realview/platsmp.c
+++ b/arch/arm/mach-realview/platsmp.c
@@ -146,11 +146,8 @@ static void __init poke_milo(void)
* register. The BootMonitor waits for this register to become
* non-zero.
*/
-#define REALVIEW_SYS_FLAGSS_OFFSET 0x30
-#define REALVIEW_SYS_FLAGSC_OFFSET 0x34
__raw_writel(BSYM(virt_to_phys(realview_secondary_startup)),
- __io_address(REALVIEW_SYS_BASE) +
- REALVIEW_SYS_FLAGSS_OFFSET);
+ __io_address(REALVIEW_SYS_FLAGSSET));
mb();
}
diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c
index 1d65e64ae57..917f8ca3abf 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 2817fe09931..7fb726d5f8b 100644
--- a/arch/arm/mach-realview/realview_pb1176.c
+++ b/arch/arm/mach-realview/realview_pb1176.c
@@ -290,6 +290,28 @@ static struct sys_timer realview_pb1176_timer = {
.init = realview_pb1176_timer_init,
};
+static void realview_pb1176_reset(char mode)
+{
+ void __iomem *hdr_ctrl = __io_address(REALVIEW_SYS_BASE) +
+ REALVIEW_SYS_RESETCTL_OFFSET;
+ void __iomem *rst_hdr_ctrl = __io_address(REALVIEW_SYS_BASE) +
+ REALVIEW_SYS_LOCK_OFFSET;
+ __raw_writel(REALVIEW_SYS_LOCKVAL_MASK, rst_hdr_ctrl);
+ __raw_writel(REALVIEW_PB1176_SYS_LOCKVAL_RSTCTL, hdr_ctrl);
+}
+
+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;
@@ -313,6 +335,7 @@ static void __init realview_pb1176_init(void)
#ifdef CONFIG_LEDS
leds_event = realview_leds_event;
#endif
+ realview_reset = realview_pb1176_reset;
}
MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
@@ -320,6 +343,7 @@ 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 94680fcf726..9bbbfc05f22 100644
--- a/arch/arm/mach-realview/realview_pb11mp.c
+++ b/arch/arm/mach-realview/realview_pb11mp.c
@@ -299,6 +299,21 @@ static struct sys_timer realview_pb11mp_timer = {
.init = realview_pb11mp_timer_init,
};
+static void realview_pb11mp_reset(char mode)
+{
+ void __iomem *hdr_ctrl = __io_address(REALVIEW_SYS_BASE) +
+ REALVIEW_SYS_RESETCTL_OFFSET;
+ unsigned int val;
+
+ /*
+ * To reset, we hit the on-board reset register
+ * in the system FPGA
+ */
+ val = __raw_readl(hdr_ctrl);
+ val |= REALVIEW_PB11MP_SYS_CTRL_RESET_CONFIGCLR;
+ __raw_writel(val, hdr_ctrl);
+}
+
static void __init realview_pb11mp_init(void)
{
int i;
@@ -324,6 +339,7 @@ static void __init realview_pb11mp_init(void)
#ifdef CONFIG_LEDS
leds_event = realview_leds_event;
#endif
+ realview_reset = realview_pb11mp_reset;
}
MACHINE_START(REALVIEW_PB11MP, "ARM-RealView PB11MPCore")
@@ -331,6 +347,7 @@ 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 941beb2b970..fe861e96c56 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 7e4bc6cdca5..ec39488e2b4 100644
--- a/arch/arm/mach-realview/realview_pbx.c
+++ b/arch/arm/mach-realview/realview_pbx.c
@@ -304,6 +304,26 @@ static struct sys_timer realview_pbx_timer = {
.init = realview_pbx_timer_init,
};
+static void realview_pbx_fixup(struct machine_desc *mdesc, struct tag *tags,
+ char **from, struct meminfo *meminfo)
+{
+#ifdef CONFIG_SPARSEMEM
+ /*
+ * Memory configuration with SPARSEMEM enabled on RealView PBX (see
+ * asm/mach/memory.h for more information).
+ */
+ meminfo->bank[0].start = 0;
+ meminfo->bank[0].size = SZ_256M;
+ meminfo->bank[1].start = 0x20000000;
+ meminfo->bank[1].size = SZ_512M;
+ meminfo->bank[2].start = 0x80000000;
+ meminfo->bank[2].size = SZ_256M;
+ meminfo->nr_banks = 3;
+#else
+ realview_fixup(mdesc, tags, from, meminfo);
+#endif
+}
+
static void __init realview_pbx_init(void)
{
int i;
@@ -345,6 +365,7 @@ 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_pbx_fixup,
.map_io = realview_pbx_map_io,
.init_irq = gic_init_irq,
.timer = &realview_pbx_timer,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-03 01:08:01 +0000