XMMBoot » History » Version 19
Denis 'GNUtoo' Carikli, 03/16/2020 02:22 AM
| 1 | 1 | Denis 'GNUtoo' Carikli | h1. XMMBoot |
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| 3 | h2. Introduction |
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| 4 | |||
| 5 | For both libsamsung-ipc and the Linux driver it's interesting to understand better the boot of the modem in order to come with good names for the abstraction. |
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| 7 | 16 | Denis 'GNUtoo' Carikli | h2. GPIOs |
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| 9 | 10 | Denis 'GNUtoo' Carikli | The GPIO platform data names were taken from the "modem_modemctl_device_xmm6260.c":https://git.replicant.us/replicant/kernel_samsung_smdk4412/tree/drivers/misc/modem_if/modem_modemctl_device_xmm6260.c file |
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| 11 | 12 | Denis 'GNUtoo' Carikli | |_. ioctl name |_. function pointer name |_. gpio platform data name |_. present |_. absent |_. comments | |
| 12 | | | | gpio_cp_on | | | cp == baseband processor | |
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| 13 | | | | gpio_reset_req_n | | |
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| 14 | | | | gpio_cp_reset | | | cp == baseband processor | |
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| 15 | | | | gpio_pda_active | | |
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| 16 | | | | gpio_phone_active | | |
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| 17 | | | | gpio_cp_dump_int | | | cp == baseband processor | |
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| 18 | 13 | Denis 'GNUtoo' Carikli | | IOCTL_MODEM_BOOT_ON |
| 19 | 1 | Denis 'GNUtoo' Carikli | IOCTL_MODEM_BOOT_OFF | modem_boot_on |
| 20 | 14 | Denis 'GNUtoo' Carikli | modem_boot_off | gpio_flm_uart_sel | Galaxy Nexus | Not used in libsamsung-ipc for other Replicant compatible devices | Modem download mode ? | |
| 21 | | | | gpio_cp_warm_reset | | | cp == baseband processor | |
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| 22 | 12 | Denis 'GNUtoo' Carikli | | | | gpio_revers_bias_clear | | | | |
| 23 | | | | gpio_revers_bias_restore | | | | |
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| 24 | 4 | Denis 'GNUtoo' Carikli | | | | gpio_sim_detect | | | Detect SIM card presence ? | |
| 25 | 1 | Denis 'GNUtoo' Carikli | |
| 26 | 16 | Denis 'GNUtoo' Carikli | h3. SIM card presence detection |
| 27 | 7 | Denis 'GNUtoo' Carikli | |
| 28 | Do we really want to check the SIM card presence? |
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| 29 | |||
| 30 | Would it be possible not to for privacy reasons? |
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| 31 | |||
| 32 | Example: |
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| 33 | * Boot a modem with a SIM |
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| 34 | * Take away the SIM card |
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| 35 | 1 | Denis 'GNUtoo' Carikli | * Go to a protest with only the SIM card and a phone with no data on it to be able to call if necessary. |
| 36 | 7 | Denis 'GNUtoo' Carikli | |
| 37 | 16 | Denis 'GNUtoo' Carikli | h3. TODO |
| 38 | 1 | Denis 'GNUtoo' Carikli | |
| 39 | * check gpio_flm_uart_sel in smdk4412 kernel too |
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| 40 | 16 | Denis 'GNUtoo' Carikli | |
| 41 | h2. Modem partitions |
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| 42 | |||
| 43 | h3. GT-I9300 |
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| 44 | 3 | Denis 'GNUtoo' Carikli | |
| 45 | 19 | Denis 'GNUtoo' Carikli | |_. Location |_. Name |_. Content | |
| 46 | 18 | Denis 'GNUtoo' Carikli | | 0x0 -> 0x1000 | ? | Data | |
| 47 | 17 | Denis 'GNUtoo' Carikli | | "0x1000 -> 0xE000":https://git.replicant.us/replicant/external_libsamsung-ipc/tree/samsung-ipc/devices/i9300/i9300.h?id=9ff9785a7f48e32f107ca7fb2e298b1320ad4cbc#n24 | PSI | |
| 48 | | "0xF000 -> 0x19000":https://git.replicant.us/replicant/external_libsamsung-ipc/tree/samsung-ipc/devices/i9300/i9300.h?id=9ff9785a7f48e32f107ca7fb2e298b1320ad4cbc#n26 | EBL | |
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| 50 | 1 | Denis 'GNUtoo' Carikli | h2. Links |
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| 52 | 15 | Denis 'GNUtoo' Carikli | * "modem_modemctl_device_xmm6260.c":https://git.replicant.us/replicant/kernel_samsung_smdk4412/tree/drivers/misc/modem_if/modem_modemctl_device_xmm6260.c |
| 53 | 1 | Denis 'GNUtoo' Carikli | * https://forum.xda-developers.com/galaxy-s2/help/how-to-talk-to-modem-commands-t1471241/page4 |