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author | Amaury Pouly <amaury.pouly@gmail.com> | 2014-04-12 00:08:11 +0200 |
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committer | Amaury Pouly <amaury.pouly@gmail.com> | 2014-04-12 00:11:13 +0200 |
commit | 238be18d0331a7a87e3ea8ea0d24b78e451357cb (patch) | |
tree | 31807bf3fd533d2d0d3d4eb0421b08100cc67c25 /utils/hwstub/stub/pp/target.c | |
parent | 910235b49a754fcd18157dbd22e125a32b482c9d (diff) | |
download | rockbox-238be18d0331a7a87e3ea8ea0d24b78e451357cb.tar.gz rockbox-238be18d0331a7a87e3ea8ea0d24b78e451357cb.zip |
hwstub: add proper PP support
- drop support for PP500x: it's very different from other PP and although
it would be possible to support them, I don't have one to test the code
- make sure only the CPU is started
- add PP descriptor to report chip ID and revision
- add code in shell and lua to support pp (no register description yet)
- compile for ARMv4 because PP502x is an ARM7TDMI
Change-Id: I36c4e465dfc2cfdfe7433b2f65cc8f6f0720fe62
Diffstat (limited to 'utils/hwstub/stub/pp/target.c')
-rw-r--r-- | utils/hwstub/stub/pp/target.c | 65 |
1 files changed, 61 insertions, 4 deletions
diff --git a/utils/hwstub/stub/pp/target.c b/utils/hwstub/stub/pp/target.c index 14eab80080..5e3a819114 100644 --- a/utils/hwstub/stub/pp/target.c +++ b/utils/hwstub/stub/pp/target.c @@ -30,28 +30,85 @@ * */ -/* FIXME wrong for PP500x */ -#define USEC_TIMER (*(volatile unsigned long *)(0x60005010)) +enum pp_family_t +{ + UNKNOWN, + PP502x, + PP611x +}; + +static enum pp_family_t g_pp_family = UNKNOWN; + +#define USEC_TIMER (*(volatile unsigned long *)(0x60005010)) + +// NOTE only valid for PP502x and above */ +#define PP_VER1 (*(volatile unsigned long *)(0x70000000)) +#define PP_VER2 (*(volatile unsigned long *)(0x70000004)) struct hwstub_target_desc_t __attribute__((aligned(2))) target_descriptor = { sizeof(struct hwstub_target_desc_t), HWSTUB_DT_TARGET, HWSTUB_TARGET_PP, - "PP500x / PP502x / PP610x" + "PP502x / PP611x" }; +static struct hwstub_pp_desc_t __attribute__((aligned(2))) pp_descriptor = +{ + sizeof(struct hwstub_pp_desc_t), + HWSTUB_DT_PP, + 0, {' ', ' '}, +}; + +static uint16_t char2hex(uint8_t c) +{ + if(c >= '0' && c <= '9') + return c - '0'; + else + return 0xf; +} + void target_init(void) { + /* try to read version for PP502x */ + if(PP_VER2 >> 16 != ('P' | 'P' << 8)) + { + logf("unidentified PP family"); + g_pp_family = UNKNOWN; + } + else + { + pp_descriptor.wChipID = char2hex((PP_VER2 >> 8) & 0xff) << 12 | + char2hex(PP_VER2 & 0xff) << 8 | + char2hex((PP_VER1 >> 24) & 0xff) << 4 | + char2hex((PP_VER1 >> 16) & 0xff); + pp_descriptor.bRevision[0] = (PP_VER1 >> 8) & 0xff; + pp_descriptor.bRevision[1] = PP_VER1 & 0xff; + if(pp_descriptor.wChipID >= 0x6110) + { + logf("identified PP611x family"); + g_pp_family = PP611x; + } + else + { + logf("identified PP502x family"); + g_pp_family = PP502x; + } + } } void target_get_desc(int desc, void **buffer) { - *buffer = NULL; + if(desc == HWSTUB_DT_PP) + *buffer = &pp_descriptor; + else + *buffer = NULL; } void target_get_config_desc(void *buffer, int *size) { + memcpy(buffer, &pp_descriptor, sizeof(pp_descriptor)); + *size += sizeof(pp_descriptor); } void target_udelay(int us) |