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sparc: leon3: Move snoop detection from startup.S to arch_cpu_init()

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Signed-off-by: Francois Retief <fgretief@spaceteq.co.za>
This commit is contained in:
Francois Retief 2015-10-28 15:48:41 +02:00
parent e17c5200c7
commit d67269ba70
4 changed files with 21 additions and 21 deletions
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13
arch/sparc/cpu/leon3/cpu_init.c
View file

@ -30,7 +30,6 @@ DECLARE_GLOBAL_DATA_PTR;
ambapp_dev_irqmp *irqmp = NULL;
ambapp_dev_gptimer *gptimer = NULL;
unsigned int gptimer_irq = 0;
int leon3_snooping_avail = 0;
/*
* Breath some life into the CPU...
@ -63,12 +62,24 @@ void cpu_init_f2(void)
ambapp_bus_init(CONFIG_AMBAPP_IOAREA, CONFIG_SYS_CLK_FREQ, &ambapp_plb);
}
/* If cache snooping is available in hardware the result will be set
* to 0x800000, otherwise 0.
*/
static unsigned int snoop_detect(void)
{
unsigned int result;
asm("lda [%%g0] 2, %0" : "=r"(result));
return result & 0x00800000;
}
int arch_cpu_init(void)
{
gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
gd->bus_clk = CONFIG_SYS_CLK_FREQ;
gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
gd->arch.snooping_available = snoop_detect();
return 0;
}

15
arch/sparc/cpu/leon3/start.S
View file

@ -209,8 +209,6 @@ _trap_table:
SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! f8-fb
SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! fc-ff
.extern leon3_snooping_avail
.section ".text"
.extern _nomem_amba_init, _nomem_memory_ctrl_init
.align 4
@ -401,19 +399,6 @@ prom_relocate_loop:
nop
nop
/* If CACHE snooping is available in hardware the
* variable leon3_snooping_avail will be set to
* 0x800000 else 0.
*/
snoop_detect:
sethi %hi(0x00800000), %o0
lda [%g0] 2, %o1
and %o0, %o1, %o0
sethi %hi(leon3_snooping_avail+CONFIG_SYS_RELOC_MONITOR_BASE-CONFIG_SYS_TEXT_BASE), %o1
st %o0, [%lo(leon3_snooping_avail+CONFIG_SYS_RELOC_MONITOR_BASE-CONFIG_SYS_TEXT_BASE)+%o1]
/* call relocate*/
nop
/* Call relocated init functions */
jump:
SPARC_LOAD_ADDRESS(cpu_init_f2, l7, o1)

7
arch/sparc/cpu/leon3/usb_uhci.c
View file

@ -85,10 +85,11 @@
#include <usb.h>
#include "usb_uhci.h"
DECLARE_GLOBAL_DATA_PTR;
#define USB_MAX_TEMP_TD 128 /* number of temporary TDs for bulk and control transfers */
#define USB_MAX_TEMP_INT_TD 32 /* number of temporary TDs for Interrupt transfers */
extern int leon3_snooping_avail;
/*
#define out16r(address,data) (*(unsigned short *)(address) = \
(unsigned short)( \
@ -573,7 +574,7 @@ void usb_check_skel(void)
if (qh_cntrl.dev_ptr != 0) { /* it's a device assigned check if this caused IRQ */
dev = (struct usb_device *)qh_cntrl.dev_ptr;
/* Flush cache now that hardware updated DATA and TDs/QHs */
if (!leon3_snooping_avail)
if (!gd->arch.snooping_avail)
sparc_dcache_flush_all();
usb_get_td_status(&tmp_td[0], dev); /* update status */
if (!(dev->status & USB_ST_NOT_PROC)) { /* is not active anymore, disconnect devices */
@ -584,7 +585,7 @@ void usb_check_skel(void)
if (qh_bulk.dev_ptr != 0) { /* it's a device assigned check if this caused IRQ */
dev = (struct usb_device *)qh_bulk.dev_ptr;
/* Flush cache now that hardware updated DATA and TDs/QHs */
if (!leon3_snooping_avail)
if (!gd->arch.snooping_avail)
sparc_dcache_flush_all();
usb_get_td_status(&tmp_td[0], dev); /* update status */
if (!(dev->status & USB_ST_NOT_PROC)) { /* is not active anymore, disconnect devices */

7
arch/sparc/include/asm/global_data.h
View file

@ -2,8 +2,8 @@
* (C) Copyright 2002-2010
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2007
* Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
* (C) Copyright 2007, 2015
* Daniel Hellstrom, Cobham, Gaisler, daniel@gaisler.com.
*
* SPDX-License-Identifier: GPL-2.0+
*/
@ -17,6 +17,9 @@
struct arch_global_data {
void *uart;
unsigned int uart_freq;
#ifdef CONFIG_LEON3
unsigned int snooping_available;
#endif
};
#include <asm-generic/global_data.h>