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hw/block/pflash_cfi02: Add an enum to define the write cycles 

No change in functionality is intended with this commit.

Signed-off-by: Stephen Checkoway <stephen.checkoway@oberlin.edu>
Message-Id: <20190426162624.55977-3-stephen.checkoway@oberlin.edu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[PMD: Extracted from bigger patch]
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2019-05-05 22:42:08 +02:00
parent 6536987fd6
commit aeaf6c20db
1 changed files with 8 additions and 2 deletions
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10
hw/block/pflash_cfi02.c
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@ -57,6 +57,11 @@ do { \
#define PFLASH_LAZY_ROMD_THRESHOLD 42 #define PFLASH_LAZY_ROMD_THRESHOLD 42
/* Special write cycles for CFI queries. */
enum {
WCYCLE_CFI = 7,
};
struct PFlashCFI02 { struct PFlashCFI02 {
/*< private >*/ /*< private >*/
SysBusDevice parent_obj; SysBusDevice parent_obj;
@ -286,7 +291,7 @@ static void pflash_write(PFlashCFI02 *pfl, hwaddr offset,
if (boff == 0x55 && cmd == 0x98) { if (boff == 0x55 && cmd == 0x98) {
enter_CFI_mode: enter_CFI_mode:
/* Enter CFI query mode */ /* Enter CFI query mode */
pfl->wcycle = 7; pfl->wcycle = WCYCLE_CFI;
pfl->cmd = 0x98; pfl->cmd = 0x98;
return; return;
} }
@ -458,7 +463,8 @@ static void pflash_write(PFlashCFI02 *pfl, hwaddr offset,
goto reset_flash; goto reset_flash;
} }
break; break;
case 7: /* Special value for CFI queries */ /* Special values for CFI queries */
case WCYCLE_CFI:
DPRINTF("%s: invalid write in CFI query mode\n", __func__); DPRINTF("%s: invalid write in CFI query mode\n", __func__);
goto reset_flash; goto reset_flash;
default: default: