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-rw-r--r--arch/blackfin/kernel/setup.c159
1 files changed, 141 insertions, 18 deletions
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index 2ad747e909fb..c113cfa459a7 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -25,6 +25,7 @@
#include <asm/cacheflush.h>
#include <asm/blackfin.h>
#include <asm/cplbinit.h>
+#include <asm/clocks.h>
#include <asm/div64.h>
#include <asm/cpu.h>
#include <asm/fixed_code.h>
@@ -550,7 +551,6 @@ static __init void memory_setup(void)
{
#ifdef CONFIG_MTD_UCLINUX
unsigned long mtd_phys = 0;
- unsigned long n;
#endif
unsigned long max_mem;
@@ -594,9 +594,9 @@ static __init void memory_setup(void)
mtd_size = PAGE_ALIGN(*((unsigned long *)(mtd_phys + 8)));
# if defined(CONFIG_EXT2_FS) || defined(CONFIG_EXT3_FS)
- n = ext2_image_size((void *)(mtd_phys + 0x400));
- if (n)
- mtd_size = PAGE_ALIGN(n * 1024);
+ if (*((unsigned short *)(mtd_phys + 0x438)) == EXT2_SUPER_MAGIC)
+ mtd_size =
+ PAGE_ALIGN(*((unsigned long *)(mtd_phys + 0x404)) << 10);
# endif
# if defined(CONFIG_CRAMFS)
@@ -612,7 +612,8 @@ static __init void memory_setup(void)
/* ROM_FS is XIP, so if we found it, we need to limit memory */
if (memory_end > max_mem) {
- pr_info("Limiting kernel memory to %liMB due to anomaly 05000263\n", max_mem >> 20);
+ pr_info("Limiting kernel memory to %liMB due to anomaly 05000263\n",
+ (max_mem - CONFIG_PHY_RAM_BASE_ADDRESS) >> 20);
memory_end = max_mem;
}
}
@@ -642,7 +643,8 @@ static __init void memory_setup(void)
* doesn't exist, or we don't need to - then dont.
*/
if (memory_end > max_mem) {
- pr_info("Limiting kernel memory to %liMB due to anomaly 05000263\n", max_mem >> 20);
+ pr_info("Limiting kernel memory to %liMB due to anomaly 05000263\n",
+ (max_mem - CONFIG_PHY_RAM_BASE_ADDRESS) >> 20);
memory_end = max_mem;
}
@@ -661,8 +663,8 @@ static __init void memory_setup(void)
init_mm.end_data = (unsigned long)_edata;
init_mm.brk = (unsigned long)0;
- printk(KERN_INFO "Board Memory: %ldMB\n", physical_mem_end >> 20);
- printk(KERN_INFO "Kernel Managed Memory: %ldMB\n", _ramend >> 20);
+ printk(KERN_INFO "Board Memory: %ldMB\n", (physical_mem_end - CONFIG_PHY_RAM_BASE_ADDRESS) >> 20);
+ printk(KERN_INFO "Kernel Managed Memory: %ldMB\n", (_ramend - CONFIG_PHY_RAM_BASE_ADDRESS) >> 20);
printk(KERN_INFO "Memory map:\n"
" fixedcode = 0x%p-0x%p\n"
@@ -705,7 +707,7 @@ void __init find_min_max_pfn(void)
int i;
max_pfn = 0;
- min_low_pfn = memory_end;
+ min_low_pfn = PFN_DOWN(memory_end);
for (i = 0; i < bfin_memmap.nr_map; i++) {
unsigned long start, end;
@@ -748,8 +750,7 @@ static __init void setup_bootmem_allocator(void)
/* pfn of the first usable page frame after kernel image*/
if (min_low_pfn < memory_start >> PAGE_SHIFT)
min_low_pfn = memory_start >> PAGE_SHIFT;
-
- start_pfn = PAGE_OFFSET >> PAGE_SHIFT;
+ start_pfn = CONFIG_PHY_RAM_BASE_ADDRESS >> PAGE_SHIFT;
end_pfn = memory_end >> PAGE_SHIFT;
/*
@@ -794,8 +795,8 @@ static __init void setup_bootmem_allocator(void)
}
/* reserve memory before memory_start, including bootmap */
- reserve_bootmem(PAGE_OFFSET,
- memory_start + bootmap_size + PAGE_SIZE - 1 - PAGE_OFFSET,
+ reserve_bootmem(CONFIG_PHY_RAM_BASE_ADDRESS,
+ memory_start + bootmap_size + PAGE_SIZE - 1 - CONFIG_PHY_RAM_BASE_ADDRESS,
BOOTMEM_DEFAULT);
}
@@ -844,13 +845,40 @@ static inline int __init get_mem_size(void)
break;
}
switch (ddrctl & 0x30000) {
- case DEVWD_4: ret *= 2;
- case DEVWD_8: ret *= 2;
- case DEVWD_16: break;
+ case DEVWD_4:
+ ret *= 2;
+ case DEVWD_8:
+ ret *= 2;
+ case DEVWD_16:
+ break;
}
if ((ddrctl & 0xc000) == 0x4000)
ret *= 2;
return ret;
+#elif defined(CONFIG_BF60x)
+ u32 ddrctl = bfin_read_DDR0_CFG();
+ int ret;
+ switch (ddrctl & 0xf00) {
+ case DEVSZ_64:
+ ret = 64 / 8;
+ break;
+ case DEVSZ_128:
+ ret = 128 / 8;
+ break;
+ case DEVSZ_256:
+ ret = 256 / 8;
+ break;
+ case DEVSZ_512:
+ ret = 512 / 8;
+ break;
+ case DEVSZ_1G:
+ ret = 1024 / 8;
+ break;
+ case DEVSZ_2G:
+ ret = 2048 / 8;
+ break;
+ }
+ return ret;
#endif
BUG();
}
@@ -864,12 +892,14 @@ void __init setup_arch(char **cmdline_p)
{
u32 mmr;
unsigned long sclk, cclk;
+ struct clk *clk;
native_machine_early_platform_add_devices();
enable_shadow_console();
/* Check to make sure we are running on the right processor */
+ mmr = bfin_cpuid();
if (unlikely(CPUID != bfin_cpuid()))
printk(KERN_ERR "ERROR: Not running on ADSP-%s: unknown CPUID 0x%04x Rev 0.%d\n",
CPU, bfin_cpuid(), bfin_revid());
@@ -890,6 +920,10 @@ void __init setup_arch(char **cmdline_p)
memset(&bfin_memmap, 0, sizeof(bfin_memmap));
+#ifdef CONFIG_BF60x
+ /* Should init clock device before parse command early */
+ clk_init();
+#endif
/* If the user does not specify things on the command line, use
* what the bootloader set things up as
*/
@@ -904,6 +938,7 @@ void __init setup_arch(char **cmdline_p)
memory_setup();
+#ifndef CONFIG_BF60x
/* Initialize Async memory banks */
bfin_write_EBIU_AMBCTL0(AMBCTL0VAL);
bfin_write_EBIU_AMBCTL1(AMBCTL1VAL);
@@ -913,6 +948,7 @@ void __init setup_arch(char **cmdline_p)
bfin_write_EBIU_MODE(CONFIG_EBIU_MODEVAL);
bfin_write_EBIU_FCTL(CONFIG_EBIU_FCTLVAL);
#endif
+#endif
#ifdef CONFIG_BFIN_HYSTERESIS_CONTROL
bfin_write_PORTF_HYSTERESIS(HYST_PORTF_0_15);
bfin_write_PORTG_HYSTERESIS(HYST_PORTG_0_15);
@@ -921,8 +957,24 @@ void __init setup_arch(char **cmdline_p)
~HYST_NONEGPIO_MASK) | HYST_NONEGPIO);
#endif
+#ifdef CONFIG_BF60x
+ clk = clk_get(NULL, "CCLK");
+ if (!IS_ERR(clk)) {
+ cclk = clk_get_rate(clk);
+ clk_put(clk);
+ } else
+ cclk = 0;
+
+ clk = clk_get(NULL, "SCLK0");
+ if (!IS_ERR(clk)) {
+ sclk = clk_get_rate(clk);
+ clk_put(clk);
+ } else
+ sclk = 0;
+#else
cclk = get_cclk();
sclk = get_sclk();
+#endif
if ((ANOMALY_05000273 || ANOMALY_05000274) && (cclk >> 1) < sclk)
panic("ANOMALY 05000273 or 05000274: CCLK must be >= 2*SCLK");
@@ -938,7 +990,7 @@ void __init setup_arch(char **cmdline_p)
printk(KERN_INFO "Hardware Trace %s and %sabled\n",
(mmr & 0x1) ? "active" : "off",
(mmr & 0x2) ? "en" : "dis");
-
+#ifndef CONFIG_BF60x
mmr = bfin_read_SYSCR();
printk(KERN_INFO "Boot Mode: %i\n", mmr & 0xF);
@@ -980,7 +1032,7 @@ void __init setup_arch(char **cmdline_p)
printk(KERN_INFO "Recovering from Watchdog event\n");
else if (_bfin_swrst & RESET_SOFTWARE)
printk(KERN_NOTICE "Reset caused by Software reset\n");
-
+#endif
printk(KERN_INFO "Blackfin support (C) 2004-2010 Analog Devices, Inc.\n");
if (bfin_compiled_revid() == 0xffff)
printk(KERN_INFO "Compiled for ADSP-%s Rev any, running on 0.%d\n", CPU, bfin_revid());
@@ -1060,10 +1112,12 @@ subsys_initcall(topology_init);
/* Get the input clock frequency */
static u_long cached_clkin_hz = CONFIG_CLKIN_HZ;
+#ifndef CONFIG_BF60x
static u_long get_clkin_hz(void)
{
return cached_clkin_hz;
}
+#endif
static int __init early_init_clkin_hz(char *buf)
{
cached_clkin_hz = simple_strtoul(buf, NULL, 0);
@@ -1075,6 +1129,7 @@ static int __init early_init_clkin_hz(char *buf)
}
early_param("clkin_hz=", early_init_clkin_hz);
+#ifndef CONFIG_BF60x
/* Get the voltage input multiplier */
static u_long get_vco(void)
{
@@ -1097,10 +1152,23 @@ static u_long get_vco(void)
cached_vco *= msel;
return cached_vco;
}
+#endif
/* Get the Core clock */
u_long get_cclk(void)
{
+#ifdef CONFIG_BF60x
+ struct clk *cclk;
+ u_long cclk_rate;
+
+ cclk = clk_get(NULL, "CCLK");
+ if (IS_ERR(cclk))
+ return 0;
+
+ cclk_rate = clk_get_rate(cclk);
+ clk_put(cclk);
+ return cclk_rate;
+#else
static u_long cached_cclk_pll_div, cached_cclk;
u_long csel, ssel;
@@ -1120,12 +1188,66 @@ u_long get_cclk(void)
else
cached_cclk = get_vco() >> csel;
return cached_cclk;
+#endif
}
EXPORT_SYMBOL(get_cclk);
+#ifdef CONFIG_BF60x
+/* Get the bf60x clock of SCLK0 domain */
+u_long get_sclk0(void)
+{
+ struct clk *sclk0;
+ u_long sclk0_rate;
+
+ sclk0 = clk_get(NULL, "SCLK0");
+ if (IS_ERR(sclk0))
+ return 0;
+
+ sclk0_rate = clk_get_rate(sclk0);
+ clk_put(sclk0);
+ return sclk0_rate;
+}
+EXPORT_SYMBOL(get_sclk0);
+
+/* Get the bf60x clock of SCLK1 domain */
+u_long get_sclk1(void)
+{
+ struct clk *sclk1;
+ u_long sclk1_rate;
+
+ sclk1 = clk_get(NULL, "SCLK1");
+ if (IS_ERR(sclk1))
+ return 0;
+
+ sclk1_rate = clk_get_rate(sclk1);
+ clk_put(sclk1);
+ return sclk1_rate;
+}
+EXPORT_SYMBOL(get_sclk1);
+
+/* Get the bf60x DRAM clock */
+u_long get_dclk(void)
+{
+ struct clk *dclk;
+ u_long dclk_rate;
+
+ dclk = clk_get(NULL, "DCLK");
+ if (IS_ERR(dclk))
+ return 0;
+
+ dclk_rate = clk_get_rate(dclk);
+ clk_put(dclk);
+ return dclk_rate;
+}
+EXPORT_SYMBOL(get_dclk);
+#endif
+
/* Get the System clock */
u_long get_sclk(void)
{
+#ifdef CONFIG_BF60x
+ return get_sclk0();
+#else
static u_long cached_sclk;
u_long ssel;
@@ -1146,6 +1268,7 @@ u_long get_sclk(void)
cached_sclk = get_vco() / ssel;
return cached_sclk;
+#endif
}
EXPORT_SYMBOL(get_sclk);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.