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MIPS: ath25: add SoC type detection

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Detect SoC type based on device ID and board configuration data.

Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Cc: Linux MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/8244/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Sergey Ryazanov 2014-10-29 03:18:45 +04:00 committed by Ralf Baechle
parent a747371748
commit 1654861f6e
4 changed files with 77 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
arch/mips/ath25/ar2315.c
View File

@ -24,6 +24,8 @@
#include <asm/reboot.h>
#include <asm/time.h>
#include <ath25_platform.h>
#include "devices.h"
#include "ar2315.h"
#include "ar2315_regs.h"
@ -249,6 +251,7 @@ void __init ar2315_plat_mem_setup(void)
{
void __iomem *sdram_base;
u32 memsize, memcfg;
u32 devid;
u32 config;
/* Detect memory size */
@ -264,6 +267,25 @@ void __init ar2315_plat_mem_setup(void)
ar2315_rst_base = ioremap_nocache(AR2315_RST_BASE, AR2315_RST_SIZE);
/* Detect the hardware based on the device ID */
devid = ar2315_rst_reg_read(AR2315_SREV) & AR2315_REV_CHIP;
switch (devid) {
case 0x91: /* Need to check */
ath25_soc = ATH25_SOC_AR2318;
break;
case 0x90:
ath25_soc = ATH25_SOC_AR2317;
break;
case 0x87:
ath25_soc = ATH25_SOC_AR2316;
break;
case 0x86:
default:
ath25_soc = ATH25_SOC_AR2315;
break;
}
ath25_board.devid = devid;
/* Clear any lingering AHB errors */
config = read_c0_config();
write_c0_config(config & ~0x3);

23
arch/mips/ath25/ar5312.c
View File

@ -24,6 +24,8 @@
#include <asm/reboot.h>
#include <asm/time.h>
#include <ath25_platform.h>
#include "devices.h"
#include "ar5312.h"
#include "ar5312_regs.h"
@ -191,10 +193,25 @@ static void __init ar5312_flash_init(void)
void __init ar5312_init_devices(void)
{
struct ath25_boarddata *config;
ar5312_flash_init();
/* Locate board/radio config data */
ath25_find_config(AR5312_FLASH_BASE, AR5312_FLASH_SIZE);
config = ath25_board.config;
/* AR2313 has CPU minor rev. 10 */
if ((current_cpu_data.processor_id & 0xff) == 0x0a)
ath25_soc = ATH25_SOC_AR2313;
/* AR2312 shares the same Silicon ID as AR5312 */
else if (config->flags & BD_ISCASPER)
ath25_soc = ATH25_SOC_AR2312;
/* Everything else is probably AR5312 or compatible */
else
ath25_soc = ATH25_SOC_AR5312;
}
static void ar5312_restart(char *command)
@ -282,6 +299,7 @@ void __init ar5312_plat_mem_setup(void)
{
void __iomem *sdram_base;
u32 memsize, memcfg, bank0_ac, bank1_ac;
u32 devid;
/* Detect memory size */
sdram_base = ioremap_nocache(AR5312_SDRAMCTL_BASE,
@ -297,6 +315,11 @@ void __init ar5312_plat_mem_setup(void)
ar5312_rst_base = ioremap_nocache(AR5312_RST_BASE, AR5312_RST_SIZE);
devid = ar5312_rst_reg_read(AR5312_REV);
devid >>= AR5312_REV_WMAC_MIN_S;
devid &= AR5312_REV_CHIP;
ath25_board.devid = (u16)devid;
/* Clear any lingering AHB errors */
ar5312_rst_reg_read(AR5312_PROCADDR);
ar5312_rst_reg_read(AR5312_DMAADDR);

17
arch/mips/ath25/devices.c
View File

@ -9,10 +9,25 @@
#include "ar2315.h"
struct ar231x_board_config ath25_board;
enum ath25_soc_type ath25_soc = ATH25_SOC_UNKNOWN;
static const char * const soc_type_strings[] = {
[ATH25_SOC_AR5312] = "Atheros AR5312",
[ATH25_SOC_AR2312] = "Atheros AR2312",
[ATH25_SOC_AR2313] = "Atheros AR2313",
[ATH25_SOC_AR2315] = "Atheros AR2315",
[ATH25_SOC_AR2316] = "Atheros AR2316",
[ATH25_SOC_AR2317] = "Atheros AR2317",
[ATH25_SOC_AR2318] = "Atheros AR2318",
[ATH25_SOC_UNKNOWN] = "Atheros (unknown)",
};
const char *get_system_type(void)
{
return "Atheros (unknown)";
if ((ath25_soc >= ARRAY_SIZE(soc_type_strings)) ||
!soc_type_strings[ath25_soc])
return soc_type_strings[ATH25_SOC_UNKNOWN];
return soc_type_strings[ath25_soc];
}
void __init ath25_serial_setup(u32 mapbase, int irq, unsigned int uartclk)

16
arch/mips/ath25/devices.h
View File

@ -7,6 +7,22 @@
#define ATH25_IRQ_CPU_CLOCK (MIPS_CPU_IRQ_BASE + 7) /* C0_CAUSE: 0x8000 */
enum ath25_soc_type {
/* handled by ar5312.c */
ATH25_SOC_AR2312,
ATH25_SOC_AR2313,
ATH25_SOC_AR5312,
/* handled by ar2315.c */
ATH25_SOC_AR2315,
ATH25_SOC_AR2316,
ATH25_SOC_AR2317,
ATH25_SOC_AR2318,
ATH25_SOC_UNKNOWN
};
extern enum ath25_soc_type ath25_soc;
extern struct ar231x_board_config ath25_board;
extern void (*ath25_irq_dispatch)(void);