* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
+#undef DEBUG
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
+#include <linux/io.h>
-#include <asm/mach/map.h>
#include <asm/tlb.h>
-#include <asm/io.h>
#include <asm/cacheflush.h>
-#include <asm/arch/sram.h>
+#include <asm/mach/map.h>
+
+#include <mach/sram.h>
+#include <mach/board.h>
+#include <mach/cpu.h>
+
+#include <mach/control.h>
+
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+# include "../mach-omap2/prm.h"
+# include "../mach-omap2/cm.h"
+# include "../mach-omap2/sdrc.h"
+#endif
#define OMAP1_SRAM_PA 0x20000000
-#define OMAP1_SRAM_VA 0xd0000000
+#define OMAP1_SRAM_VA VMALLOC_END
#define OMAP2_SRAM_PA 0x40200000
-#define OMAP2_SRAM_VA 0xd0000000
-
+#define OMAP2_SRAM_PUB_PA 0x4020f800
+#define OMAP2_SRAM_VA VMALLOC_END
+#define OMAP2_SRAM_PUB_VA (VMALLOC_END + 0x800)
+#define OMAP3_SRAM_PA 0x40200000
+#define OMAP3_SRAM_VA 0xd7000000
+#define OMAP3_SRAM_PUB_PA 0x40208000
+#define OMAP3_SRAM_PUB_VA 0xd7008000
+
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#define SRAM_BOOTLOADER_SZ 0x00
+#else
#define SRAM_BOOTLOADER_SZ 0x80
+#endif
+
+#define OMAP24XX_VA_REQINFOPERM0 IO_ADDRESS(0x68005048)
+#define OMAP24XX_VA_READPERM0 IO_ADDRESS(0x68005050)
+#define OMAP24XX_VA_WRITEPERM0 IO_ADDRESS(0x68005058)
+
+#define OMAP34XX_VA_REQINFOPERM0 IO_ADDRESS(0x68012848)
+#define OMAP34XX_VA_READPERM0 IO_ADDRESS(0x68012850)
+#define OMAP34XX_VA_WRITEPERM0 IO_ADDRESS(0x68012858)
+#define OMAP34XX_VA_ADDR_MATCH2 IO_ADDRESS(0x68012880)
+#define OMAP34XX_VA_SMS_RG_ATT0 IO_ADDRESS(0x6C000048)
+#define OMAP34XX_VA_CONTROL_STAT IO_ADDRESS(0x480022F0)
+
+#define GP_DEVICE 0x300
+#define ROUND_DOWN(value,boundary) ((value) & (~((boundary)-1)))
+
+static unsigned long omap_sram_start;
static unsigned long omap_sram_base;
static unsigned long omap_sram_size;
static unsigned long omap_sram_ceil;
+extern unsigned long omapfb_reserve_sram(unsigned long sram_pstart,
+ unsigned long sram_vstart,
+ unsigned long sram_size,
+ unsigned long pstart_avail,
+ unsigned long size_avail);
+
+/*
+ * Depending on the target RAMFS firewall setup, the public usable amount of
+ * SRAM varies. The default accessible size for all device types is 2k. A GP
+ * device allows ARM11 but not other initiators for full size. This
+ * functionality seems ok until some nice security API happens.
+ */
+static int is_sram_locked(void)
+{
+ int type = 0;
+
+ if (cpu_is_omap242x())
+ type = omap_rev() & OMAP2_DEVICETYPE_MASK;
+
+ if (type == GP_DEVICE) {
+ /* RAMFW: R/W access to all initiators for all qualifier sets */
+ if (cpu_is_omap242x()) {
+ __raw_writel(0xFF, OMAP24XX_VA_REQINFOPERM0); /* all q-vects */
+ __raw_writel(0xCFDE, OMAP24XX_VA_READPERM0); /* all i-read */
+ __raw_writel(0xCFDE, OMAP24XX_VA_WRITEPERM0); /* all i-write */
+ }
+ if (cpu_is_omap34xx()) {
+ __raw_writel(0xFFFF, OMAP34XX_VA_REQINFOPERM0); /* all q-vects */
+ __raw_writel(0xFFFF, OMAP34XX_VA_READPERM0); /* all i-read */
+ __raw_writel(0xFFFF, OMAP34XX_VA_WRITEPERM0); /* all i-write */
+ __raw_writel(0x0, OMAP34XX_VA_ADDR_MATCH2);
+ __raw_writel(0xFFFFFFFF, OMAP34XX_VA_SMS_RG_ATT0);
+ }
+ return 0;
+ } else
+ return 1; /* assume locked with no PPA or security driver */
+}
+
/*
* The amount of SRAM depends on the core type.
* Note that we cannot try to test for SRAM here because writes
*/
void __init omap_detect_sram(void)
{
- if (!cpu_is_omap24xx())
+ unsigned long reserved;
+
+ if (cpu_class_is_omap2()) {
+ if (is_sram_locked()) {
+ if (cpu_is_omap34xx()) {
+ omap_sram_base = OMAP3_SRAM_PUB_VA;
+ omap_sram_start = OMAP3_SRAM_PUB_PA;
+ omap_sram_size = 0x8000; /* 32K */
+ } else {
+ omap_sram_base = OMAP2_SRAM_PUB_VA;
+ omap_sram_start = OMAP2_SRAM_PUB_PA;
+ omap_sram_size = 0x800; /* 2K */
+ }
+ } else {
+ if (cpu_is_omap34xx()) {
+ omap_sram_base = OMAP3_SRAM_VA;
+ omap_sram_start = OMAP3_SRAM_PA;
+ omap_sram_size = 0x10000; /* 64K */
+ } else {
+ omap_sram_base = OMAP2_SRAM_VA;
+ omap_sram_start = OMAP2_SRAM_PA;
+ if (cpu_is_omap242x())
+ omap_sram_size = 0xa0000; /* 640K */
+ else if (cpu_is_omap243x())
+ omap_sram_size = 0x10000; /* 64K */
+ }
+ }
+ } else {
omap_sram_base = OMAP1_SRAM_VA;
- else
- omap_sram_base = OMAP2_SRAM_VA;
-
- if (cpu_is_omap730())
- omap_sram_size = 0x32000; /* 200K */
- else if (cpu_is_omap15xx())
- omap_sram_size = 0x30000; /* 192K */
- else if (cpu_is_omap1610() || cpu_is_omap1621() || cpu_is_omap1710())
- omap_sram_size = 0x4000; /* 16K */
- else if (cpu_is_omap1611())
- omap_sram_size = 0x3e800; /* 250K */
- else if (cpu_is_omap2420())
- omap_sram_size = 0xa0014; /* 640K */
- else {
- printk(KERN_ERR "Could not detect SRAM size\n");
- omap_sram_size = 0x4000;
+ omap_sram_start = OMAP1_SRAM_PA;
+
+ if (cpu_is_omap7xx())
+ omap_sram_size = 0x32000; /* 200K */
+ else if (cpu_is_omap15xx())
+ omap_sram_size = 0x30000; /* 192K */
+ else if (cpu_is_omap1610() || cpu_is_omap1621() ||
+ cpu_is_omap1710())
+ omap_sram_size = 0x4000; /* 16K */
+ else if (cpu_is_omap1611())
+ omap_sram_size = 0x3e800; /* 250K */
+ else {
+ printk(KERN_ERR "Could not detect SRAM size\n");
+ omap_sram_size = 0x4000;
+ }
}
-
+ reserved = omapfb_reserve_sram(omap_sram_start, omap_sram_base,
+ omap_sram_size,
+ omap_sram_start + SRAM_BOOTLOADER_SZ,
+ omap_sram_size - SRAM_BOOTLOADER_SZ);
+ omap_sram_size -= reserved;
omap_sram_ceil = omap_sram_base + omap_sram_size;
}
{ /* .length gets filled in at runtime */
.virtual = OMAP1_SRAM_VA,
.pfn = __phys_to_pfn(OMAP1_SRAM_PA),
- .type = MT_DEVICE
+ .type = MT_MEMORY
}
};
/*
- * In order to use last 2kB of SRAM on 1611b, we must round the size
- * up to multiple of PAGE_SIZE. We cannot use ioremap for SRAM, as
- * clock init needs SRAM early.
+ * Note that we cannot use ioremap for SRAM, as clock init needs SRAM early.
*/
void __init omap_map_sram(void)
{
+ unsigned long base;
+
if (omap_sram_size == 0)
return;
if (cpu_is_omap24xx()) {
omap_sram_io_desc[0].virtual = OMAP2_SRAM_VA;
- omap_sram_io_desc[0].pfn = __phys_to_pfn(OMAP2_SRAM_PA);
+
+ base = OMAP2_SRAM_PA;
+ base = ROUND_DOWN(base, PAGE_SIZE);
+ omap_sram_io_desc[0].pfn = __phys_to_pfn(base);
+ }
+
+ if (cpu_is_omap34xx()) {
+ omap_sram_io_desc[0].virtual = OMAP3_SRAM_VA;
+ base = OMAP3_SRAM_PA;
+ base = ROUND_DOWN(base, PAGE_SIZE);
+ omap_sram_io_desc[0].pfn = __phys_to_pfn(base);
}
- omap_sram_io_desc[0].length = (omap_sram_size + PAGE_SIZE-1)/PAGE_SIZE;
- omap_sram_io_desc[0].length *= PAGE_SIZE;
+ omap_sram_io_desc[0].length = 1024 * 1024; /* Use section desc */
iotable_init(omap_sram_io_desc, ARRAY_SIZE(omap_sram_io_desc));
printk(KERN_INFO "SRAM: Mapped pa 0x%08lx to va 0x%08lx size: 0x%lx\n",
- omap_sram_io_desc[0].pfn, omap_sram_io_desc[0].virtual,
+ __pfn_to_phys(omap_sram_io_desc[0].pfn),
+ omap_sram_io_desc[0].virtual,
omap_sram_io_desc[0].length);
/*
printk(KERN_ERR "Not enough space in SRAM\n");
return NULL;
}
+
omap_sram_ceil -= size;
- omap_sram_ceil &= ~0x3;
+ omap_sram_ceil = ROUND_DOWN(omap_sram_ceil, sizeof(void *));
memcpy((void *)omap_sram_ceil, start, size);
+ flush_icache_range((unsigned long)start, (unsigned long)(start + size));
return (void *)omap_sram_ceil;
}
if (!_omap_sram_reprogram_clock)
omap_sram_error();
- return _omap_sram_reprogram_clock(dpllctl, ckctl);
+ _omap_sram_reprogram_clock(dpllctl, ckctl);
}
int __init omap1_sram_init(void)
{
- _omap_sram_reprogram_clock = omap_sram_push(sram_reprogram_clock,
- sram_reprogram_clock_sz);
+ _omap_sram_reprogram_clock =
+ omap_sram_push(omap1_sram_reprogram_clock,
+ omap1_sram_reprogram_clock_sz);
return 0;
}
#define omap1_sram_init() do {} while (0)
#endif
-#ifdef CONFIG_ARCH_OMAP2
+#if defined(CONFIG_ARCH_OMAP2)
static void (*_omap2_sram_ddr_init)(u32 *slow_dll_ctrl, u32 fast_dll_ctrl,
u32 base_cs, u32 force_unlock);
if (!_omap2_sram_ddr_init)
omap_sram_error();
- return _omap2_sram_ddr_init(slow_dll_ctrl, fast_dll_ctrl,
- base_cs, force_unlock);
+ _omap2_sram_ddr_init(slow_dll_ctrl, fast_dll_ctrl,
+ base_cs, force_unlock);
}
static void (*_omap2_sram_reprogram_sdrc)(u32 perf_level, u32 dll_val,
if (!_omap2_sram_reprogram_sdrc)
omap_sram_error();
- return _omap2_sram_reprogram_sdrc(perf_level, dll_val, mem_type);
+ _omap2_sram_reprogram_sdrc(perf_level, dll_val, mem_type);
}
static u32 (*_omap2_set_prcm)(u32 dpll_ctrl_val, u32 sdrc_rfr_val, int bypass);
return _omap2_set_prcm(dpll_ctrl_val, sdrc_rfr_val, bypass);
}
+#endif
-int __init omap2_sram_init(void)
+#ifdef CONFIG_ARCH_OMAP2420
+int __init omap242x_sram_init(void)
{
- _omap2_sram_ddr_init = omap_sram_push(sram_ddr_init, sram_ddr_init_sz);
+ _omap2_sram_ddr_init = omap_sram_push(omap242x_sram_ddr_init,
+ omap242x_sram_ddr_init_sz);
- _omap2_sram_reprogram_sdrc = omap_sram_push(sram_reprogram_sdrc,
- sram_reprogram_sdrc_sz);
- _omap2_set_prcm = omap_sram_push(sram_set_prcm, sram_set_prcm_sz);
+ _omap2_sram_reprogram_sdrc = omap_sram_push(omap242x_sram_reprogram_sdrc,
+ omap242x_sram_reprogram_sdrc_sz);
+
+ _omap2_set_prcm = omap_sram_push(omap242x_sram_set_prcm,
+ omap242x_sram_set_prcm_sz);
return 0;
}
#else
-#define omap2_sram_init() do {} while (0)
+static inline int omap242x_sram_init(void)
+{
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_ARCH_OMAP2430
+int __init omap243x_sram_init(void)
+{
+ _omap2_sram_ddr_init = omap_sram_push(omap243x_sram_ddr_init,
+ omap243x_sram_ddr_init_sz);
+
+ _omap2_sram_reprogram_sdrc = omap_sram_push(omap243x_sram_reprogram_sdrc,
+ omap243x_sram_reprogram_sdrc_sz);
+
+ _omap2_set_prcm = omap_sram_push(omap243x_sram_set_prcm,
+ omap243x_sram_set_prcm_sz);
+
+ return 0;
+}
+#else
+static inline int omap243x_sram_init(void)
+{
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_ARCH_OMAP3
+
+static u32 (*_omap3_sram_configure_core_dpll)(u32 sdrc_rfr_ctrl,
+ u32 sdrc_actim_ctrla,
+ u32 sdrc_actim_ctrlb,
+ u32 m2);
+u32 omap3_configure_core_dpll(u32 sdrc_rfr_ctrl, u32 sdrc_actim_ctrla,
+ u32 sdrc_actim_ctrlb, u32 m2)
+{
+ if (!_omap3_sram_configure_core_dpll)
+ omap_sram_error();
+
+ return _omap3_sram_configure_core_dpll(sdrc_rfr_ctrl,
+ sdrc_actim_ctrla,
+ sdrc_actim_ctrlb, m2);
+}
+
+/* REVISIT: Should this be same as omap34xx_sram_init() after off-idle? */
+void restore_sram_functions(void)
+{
+ omap_sram_ceil = omap_sram_base + omap_sram_size;
+
+ _omap3_sram_configure_core_dpll =
+ omap_sram_push(omap3_sram_configure_core_dpll,
+ omap3_sram_configure_core_dpll_sz);
+}
+
+int __init omap34xx_sram_init(void)
+{
+ _omap3_sram_configure_core_dpll =
+ omap_sram_push(omap3_sram_configure_core_dpll,
+ omap3_sram_configure_core_dpll_sz);
+
+ return 0;
+}
+#else
+static inline int omap34xx_sram_init(void)
+{
+ return 0;
+}
#endif
int __init omap_sram_init(void)
omap_detect_sram();
omap_map_sram();
- if (!cpu_is_omap24xx())
+ if (!(cpu_class_is_omap2()))
omap1_sram_init();
- else
- omap2_sram_init();
+ else if (cpu_is_omap242x())
+ omap242x_sram_init();
+ else if (cpu_is_omap2430())
+ omap243x_sram_init();
+ else if (cpu_is_omap34xx())
+ omap34xx_sram_init();
return 0;
}