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Diffstat (limited to 'arch/parisc/kernel/firmware.c')
-rw-r--r--arch/parisc/kernel/firmware.c164
1 files changed, 80 insertions, 84 deletions
diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c
index fd6552c4c08..22395901d47 100644
--- a/arch/parisc/kernel/firmware.c
+++ b/arch/parisc/kernel/firmware.c
@@ -67,12 +67,11 @@
#include <asm/page.h>
#include <asm/pdc.h>
#include <asm/pdcpat.h>
-#include <asm/system.h>
#include <asm/processor.h> /* for boot_cpu_data */
static DEFINE_SPINLOCK(pdc_lock);
-static unsigned long pdc_result[32] __attribute__ ((aligned (8)));
-static unsigned long pdc_result2[32] __attribute__ ((aligned (8)));
+extern unsigned long pdc_result[NUM_PDC_RESULT];
+extern unsigned long pdc_result2[NUM_PDC_RESULT];
#ifdef CONFIG_64BIT
#define WIDE_FIRMWARE 0x1
@@ -150,26 +149,42 @@ static void convert_to_wide(unsigned long *addr)
#endif
}
+#ifdef CONFIG_64BIT
+void set_firmware_width_unlocked(void)
+{
+ int ret;
+
+ ret = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES,
+ __pa(pdc_result), 0);
+ convert_to_wide(pdc_result);
+ if (pdc_result[0] != NARROW_FIRMWARE)
+ parisc_narrow_firmware = 0;
+}
+
/**
* set_firmware_width - Determine if the firmware is wide or narrow.
*
- * This function must be called before any pdc_* function that uses the convert_to_wide
- * function.
+ * This function must be called before any pdc_* function that uses the
+ * convert_to_wide function.
*/
-void __init set_firmware_width(void)
+void set_firmware_width(void)
{
-#ifdef CONFIG_64BIT
- int retval;
unsigned long flags;
+ spin_lock_irqsave(&pdc_lock, flags);
+ set_firmware_width_unlocked();
+ spin_unlock_irqrestore(&pdc_lock, flags);
+}
+#else
+void set_firmware_width_unlocked(void)
+{
+ return;
+}
- spin_lock_irqsave(&pdc_lock, flags);
- retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, __pa(pdc_result), 0);
- convert_to_wide(pdc_result);
- if(pdc_result[0] != NARROW_FIRMWARE)
- parisc_narrow_firmware = 0;
- spin_unlock_irqrestore(&pdc_lock, flags);
-#endif
+void set_firmware_width(void)
+{
+ return;
}
+#endif /*CONFIG_64BIT*/
/**
* pdc_emergency_unlock - Unlock the linux pdc lock
@@ -288,6 +303,20 @@ int pdc_chassis_warn(unsigned long *warn)
return retval;
}
+int pdc_coproc_cfg_unlocked(struct pdc_coproc_cfg *pdc_coproc_info)
+{
+ int ret;
+
+ ret = mem_pdc_call(PDC_COPROC, PDC_COPROC_CFG, __pa(pdc_result));
+ convert_to_wide(pdc_result);
+ pdc_coproc_info->ccr_functional = pdc_result[0];
+ pdc_coproc_info->ccr_present = pdc_result[1];
+ pdc_coproc_info->revision = pdc_result[17];
+ pdc_coproc_info->model = pdc_result[18];
+
+ return ret;
+}
+
/**
* pdc_coproc_cfg - To identify coprocessors attached to the processor.
* @pdc_coproc_info: Return buffer address.
@@ -295,21 +324,16 @@ int pdc_chassis_warn(unsigned long *warn)
* This PDC call returns the presence and status of all the coprocessors
* attached to the processor.
*/
-int __init pdc_coproc_cfg(struct pdc_coproc_cfg *pdc_coproc_info)
+int pdc_coproc_cfg(struct pdc_coproc_cfg *pdc_coproc_info)
{
- int retval;
+ int ret;
unsigned long flags;
- spin_lock_irqsave(&pdc_lock, flags);
- retval = mem_pdc_call(PDC_COPROC, PDC_COPROC_CFG, __pa(pdc_result));
- convert_to_wide(pdc_result);
- pdc_coproc_info->ccr_functional = pdc_result[0];
- pdc_coproc_info->ccr_present = pdc_result[1];
- pdc_coproc_info->revision = pdc_result[17];
- pdc_coproc_info->model = pdc_result[18];
- spin_unlock_irqrestore(&pdc_lock, flags);
+ spin_lock_irqsave(&pdc_lock, flags);
+ ret = pdc_coproc_cfg_unlocked(pdc_coproc_info);
+ spin_unlock_irqrestore(&pdc_lock, flags);
- return retval;
+ return ret;
}
/**
@@ -504,7 +528,11 @@ int pdc_model_capabilities(unsigned long *capabilities)
pdc_result[0] = 0; /* preset zero (call may not be implemented!) */
retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, __pa(pdc_result), 0);
convert_to_wide(pdc_result);
- *capabilities = pdc_result[0];
+ if (retval == PDC_OK) {
+ *capabilities = pdc_result[0];
+ } else {
+ *capabilities = PDC_MODEL_OS32;
+ }
spin_unlock_irqrestore(&pdc_lock, flags);
return retval;
@@ -1080,78 +1108,48 @@ void pdc_io_reset_devices(void)
spin_unlock_irqrestore(&pdc_lock, flags);
}
+/* locked by pdc_console_lock */
+static int __attribute__((aligned(8))) iodc_retbuf[32];
+static char __attribute__((aligned(64))) iodc_dbuf[4096];
/**
- * pdc_iodc_putc - Console character print using IODC.
- * @c: the character to output.
+ * pdc_iodc_print - Console print using IODC.
+ * @str: the string to output.
+ * @count: length of str
*
* Note that only these special chars are architected for console IODC io:
* BEL, BS, CR, and LF. Others are passed through.
* Since the HP console requires CR+LF to perform a 'newline', we translate
* "\n" to "\r\n".
*/
-void pdc_iodc_putc(unsigned char c)
+int pdc_iodc_print(const unsigned char *str, unsigned count)
{
- /* XXX Should we spinlock posx usage */
- static int posx; /* for simple TAB-Simulation... */
- static int __attribute__((aligned(8))) iodc_retbuf[32];
- static char __attribute__((aligned(64))) iodc_dbuf[4096];
- unsigned int n;
+ unsigned int i;
unsigned long flags;
- switch (c) {
- case '\n':
- iodc_dbuf[0] = '\r';
- iodc_dbuf[1] = '\n';
- n = 2;
- posx = 0;
- break;
- case '\t':
- pdc_iodc_putc(' ');
- while (posx & 7) /* expand TAB */
- pdc_iodc_putc(' ');
- return; /* return since IODC can't handle this */
- case '\b':
- posx-=2; /* BS */
- default:
- iodc_dbuf[0] = c;
- n = 1;
- posx++;
- break;
- }
+ for (i = 0; i < count;) {
+ switch(str[i]) {
+ case '\n':
+ iodc_dbuf[i+0] = '\r';
+ iodc_dbuf[i+1] = '\n';
+ i += 2;
+ goto print;
+ default:
+ iodc_dbuf[i] = str[i];
+ i++;
+ break;
+ }
+ }
+print:
spin_lock_irqsave(&pdc_lock, flags);
real32_call(PAGE0->mem_cons.iodc_io,
(unsigned long)PAGE0->mem_cons.hpa, ENTRY_IO_COUT,
PAGE0->mem_cons.spa, __pa(PAGE0->mem_cons.dp.layers),
- __pa(iodc_retbuf), 0, __pa(iodc_dbuf), n, 0);
+ __pa(iodc_retbuf), 0, __pa(iodc_dbuf), i, 0);
spin_unlock_irqrestore(&pdc_lock, flags);
-}
-
-/**
- * pdc_iodc_outc - Console character print using IODC (without conversions).
- * @c: the character to output.
- *
- * Write the character directly to the IODC console.
- */
-void pdc_iodc_outc(unsigned char c)
-{
- unsigned int n;
- unsigned long flags;
- /* fill buffer with one caracter and print it */
- static int __attribute__((aligned(8))) iodc_retbuf[32];
- static char __attribute__((aligned(64))) iodc_dbuf[4096];
-
- n = 1;
- iodc_dbuf[0] = c;
-
- spin_lock_irqsave(&pdc_lock, flags);
- real32_call(PAGE0->mem_cons.iodc_io,
- (unsigned long)PAGE0->mem_cons.hpa, ENTRY_IO_COUT,
- PAGE0->mem_cons.spa, __pa(PAGE0->mem_cons.dp.layers),
- __pa(iodc_retbuf), 0, __pa(iodc_dbuf), n, 0);
- spin_unlock_irqrestore(&pdc_lock, flags);
+ return i;
}
/**
@@ -1162,11 +1160,9 @@ void pdc_iodc_outc(unsigned char c)
*/
int pdc_iodc_getc(void)
{
- unsigned long flags;
- static int __attribute__((aligned(8))) iodc_retbuf[32];
- static char __attribute__((aligned(64))) iodc_dbuf[4096];
int ch;
int status;
+ unsigned long flags;
/* Bail if no console input device. */
if (!PAGE0->mem_kbd.iodc_io)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-06 14:14:06 +0000