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Diffstat (limited to 'arch/mips/sibyte/sb1250/setup.c')
-rw-r--r--arch/mips/sibyte/sb1250/setup.c158
1 files changed, 100 insertions, 58 deletions
diff --git a/arch/mips/sibyte/sb1250/setup.c b/arch/mips/sibyte/sb1250/setup.c
index f8c605be96c..3c02b2a77ae 100644
--- a/arch/mips/sibyte/sb1250/setup.c
+++ b/arch/mips/sibyte/sb1250/setup.c
@@ -15,12 +15,14 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
-#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/reboot.h>
#include <linux/string.h>
#include <asm/bootinfo.h>
+#include <asm/cpu.h>
#include <asm/mipsregs.h>
#include <asm/io.h>
#include <asm/sibyte/sb1250.h>
@@ -30,51 +32,16 @@
unsigned int sb1_pass;
unsigned int soc_pass;
unsigned int soc_type;
+EXPORT_SYMBOL(soc_type);
unsigned int periph_rev;
unsigned int zbbus_mhz;
+EXPORT_SYMBOL(zbbus_mhz);
static char *soc_str;
static char *pass_str;
static unsigned int war_pass; /* XXXKW don't overload PASS defines? */
-static inline int setup_bcm1250(void);
-static inline int setup_bcm112x(void);
-
-/* Setup code likely to be common to all SiByte platforms */
-
-static inline int sys_rev_decode(void)
-{
- int ret = 0;
-
- war_pass = soc_pass;
- switch (soc_type) {
- case K_SYS_SOC_TYPE_BCM1250:
- case K_SYS_SOC_TYPE_BCM1250_ALT:
- case K_SYS_SOC_TYPE_BCM1250_ALT2:
- soc_str = "BCM1250";
- ret = setup_bcm1250();
- break;
- case K_SYS_SOC_TYPE_BCM1120:
- soc_str = "BCM1120";
- ret = setup_bcm112x();
- break;
- case K_SYS_SOC_TYPE_BCM1125:
- soc_str = "BCM1125";
- ret = setup_bcm112x();
- break;
- case K_SYS_SOC_TYPE_BCM1125H:
- soc_str = "BCM1125H";
- ret = setup_bcm112x();
- break;
- default:
- prom_printf("Unknown SOC type %x\n", soc_type);
- ret = 1;
- break;
- }
- return ret;
-}
-
-static inline int setup_bcm1250(void)
+static int __init setup_bcm1250(void)
{
int ret = 0;
@@ -112,15 +79,31 @@ static inline int setup_bcm1250(void)
pass_str = "A0-A6";
war_pass = K_SYS_REVISION_BCM1250_PASS2;
} else {
- prom_printf("Unknown BCM1250 rev %x\n", soc_pass);
+ printk("Unknown BCM1250 rev %x\n", soc_pass);
ret = 1;
}
break;
}
+
return ret;
}
-static inline int setup_bcm112x(void)
+int sb1250_m3_workaround_needed(void)
+{
+ switch (soc_type) {
+ case K_SYS_SOC_TYPE_BCM1250:
+ case K_SYS_SOC_TYPE_BCM1250_ALT:
+ case K_SYS_SOC_TYPE_BCM1250_ALT2:
+ case K_SYS_SOC_TYPE_BCM1125:
+ case K_SYS_SOC_TYPE_BCM1125H:
+ return soc_pass < K_SYS_REVISION_BCM1250_C0;
+
+ default:
+ return 0;
+ }
+}
+
+static int __init setup_bcm112x(void)
{
int ret = 0;
@@ -139,68 +122,127 @@ static inline int setup_bcm112x(void)
periph_rev = 3;
pass_str = "A2";
break;
+ case K_SYS_REVISION_BCM112x_A3:
+ periph_rev = 3;
+ pass_str = "A3";
+ break;
+ case K_SYS_REVISION_BCM112x_A4:
+ periph_rev = 3;
+ pass_str = "A4";
+ break;
+ case K_SYS_REVISION_BCM112x_B0:
+ periph_rev = 3;
+ pass_str = "B0";
+ break;
default:
- prom_printf("Unknown %s rev %x\n", soc_str, soc_pass);
+ printk("Unknown %s rev %x\n", soc_str, soc_pass);
ret = 1;
}
+
+ return ret;
+}
+
+/* Setup code likely to be common to all SiByte platforms */
+
+static int __init sys_rev_decode(void)
+{
+ int ret = 0;
+
+ war_pass = soc_pass;
+ switch (soc_type) {
+ case K_SYS_SOC_TYPE_BCM1250:
+ case K_SYS_SOC_TYPE_BCM1250_ALT:
+ case K_SYS_SOC_TYPE_BCM1250_ALT2:
+ soc_str = "BCM1250";
+ ret = setup_bcm1250();
+ break;
+ case K_SYS_SOC_TYPE_BCM1120:
+ soc_str = "BCM1120";
+ ret = setup_bcm112x();
+ break;
+ case K_SYS_SOC_TYPE_BCM1125:
+ soc_str = "BCM1125";
+ ret = setup_bcm112x();
+ break;
+ case K_SYS_SOC_TYPE_BCM1125H:
+ soc_str = "BCM1125H";
+ ret = setup_bcm112x();
+ break;
+ default:
+ printk("Unknown SOC type %x\n", soc_type);
+ ret = 1;
+ break;
+ }
+
return ret;
}
-void sb1250_setup(void)
+void __init sb1250_setup(void)
{
uint64_t sys_rev;
int plldiv;
int bad_config = 0;
- sb1_pass = read_c0_prid() & 0xff;
- sys_rev = bus_readq(IOADDR(A_SCD_SYSTEM_REVISION));
+ sb1_pass = read_c0_prid() & PRID_REV_MASK;
+ sys_rev = __raw_readq(IOADDR(A_SCD_SYSTEM_REVISION));
soc_type = SYS_SOC_TYPE(sys_rev);
soc_pass = G_SYS_REVISION(sys_rev);
if (sys_rev_decode()) {
- prom_printf("Restart after failure to identify SiByte chip\n");
+ printk("Restart after failure to identify SiByte chip\n");
machine_restart(NULL);
}
- plldiv = G_SYS_PLL_DIV(bus_readq(IOADDR(A_SCD_SYSTEM_CFG)));
+ plldiv = G_SYS_PLL_DIV(__raw_readq(IOADDR(A_SCD_SYSTEM_CFG)));
zbbus_mhz = ((plldiv >> 1) * 50) + ((plldiv & 1) * 25);
- prom_printf("Broadcom SiByte %s %s @ %d MHz (SB1 rev %d)\n",
+ printk("Broadcom SiByte %s %s @ %d MHz (SB1 rev %d)\n",
soc_str, pass_str, zbbus_mhz * 2, sb1_pass);
- prom_printf("Board type: %s\n", get_system_type());
+ printk("Board type: %s\n", get_system_type());
- switch(war_pass) {
+ switch (war_pass) {
case K_SYS_REVISION_BCM1250_PASS1:
#ifndef CONFIG_SB1_PASS_1_WORKAROUNDS
- prom_printf("@@@@ This is a BCM1250 A0-A2 (Pass 1) board, and the kernel doesn't have the proper workarounds compiled in. @@@@\n");
+ printk("@@@@ This is a BCM1250 A0-A2 (Pass 1) board, "
+ "and the kernel doesn't have the proper "
+ "workarounds compiled in. @@@@\n");
bad_config = 1;
#endif
break;
case K_SYS_REVISION_BCM1250_PASS2:
/* Pass 2 - easiest as default for now - so many numbers */
-#if !defined(CONFIG_SB1_PASS_2_WORKAROUNDS) || !defined(CONFIG_SB1_PASS_2_1_WORKAROUNDS)
- prom_printf("@@@@ This is a BCM1250 A3-A10 board, and the kernel doesn't have the proper workarounds compiled in. @@@@\n");
+#if !defined(CONFIG_SB1_PASS_2_WORKAROUNDS) || \
+ !defined(CONFIG_SB1_PASS_2_1_WORKAROUNDS)
+ printk("@@@@ This is a BCM1250 A3-A10 board, and the "
+ "kernel doesn't have the proper workarounds "
+ "compiled in. @@@@\n");
bad_config = 1;
#endif
#ifdef CONFIG_CPU_HAS_PREFETCH
- prom_printf("@@@@ Prefetches may be enabled in this kernel, but are buggy on this board. @@@@\n");
+ printk("@@@@ Prefetches may be enabled in this kernel, "
+ "but are buggy on this board. @@@@\n");
bad_config = 1;
#endif
break;
case K_SYS_REVISION_BCM1250_PASS2_2:
#ifndef CONFIG_SB1_PASS_2_WORKAROUNDS
- prom_printf("@@@@ This is a BCM1250 B1/B2. board, and the kernel doesn't have the proper workarounds compiled in. @@@@\n");
+ printk("@@@@ This is a BCM1250 B1/B2. board, and the "
+ "kernel doesn't have the proper workarounds "
+ "compiled in. @@@@\n");
bad_config = 1;
#endif
-#if defined(CONFIG_SB1_PASS_2_1_WORKAROUNDS) || !defined(CONFIG_CPU_HAS_PREFETCH)
- prom_printf("@@@@ This is a BCM1250 B1/B2, but the kernel is conservatively configured for an 'A' stepping. @@@@\n");
+#if defined(CONFIG_SB1_PASS_2_1_WORKAROUNDS) || \
+ !defined(CONFIG_CPU_HAS_PREFETCH)
+ printk("@@@@ This is a BCM1250 B1/B2, but the kernel is "
+ "conservatively configured for an 'A' stepping. "
+ "@@@@\n");
#endif
break;
default:
break;
}
if (bad_config) {
- prom_printf("Invalid configuration for this chip.\n");
+ printk("Invalid configuration for this chip.\n");
machine_restart(NULL);
}
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-14 21:27:07 +0000