e3-hacking April 2006

e3-hacking@earth.li

17 participants
26 discussions

Modem Patch
by Matt Callow 03 Apr '06

03 Apr '06

Hi, attached is a patch to enable the modem on the e3. The patch should be applied after Jonathans patches. It is then accessable as /dev/ttyS1. I use micrcom to talk to it. So far, I've managed to get it connected to the phone line as a speaker phone, but I can't get any sound through the handset. Matt Index: linux-2.6/include/asm-arm/arch-omap/serial.h =================================================================== --- linux-2.6/include/asm-arm/arch-omap/serial.h (revision 370) +++ linux-2.6/include/asm-arm/arch-omap/serial.h (working copy) @@ -34,4 +34,9 @@ __ret; \ }) +#if defined(CONFIG_MACH_AMS_DELTA) +#define AMS_DELTA_MODEM_CLK 1843200 +#define AMS_DELTA_MODEM_LINE 1 #endif + +#endif Index: linux-2.6/arch/arm/mach-omap1/board-ams-delta.c =================================================================== --- linux-2.6/arch/arm/mach-omap1/board-ams-delta.c (revision 379) +++ linux-2.6/arch/arm/mach-omap1/board-ams-delta.c (working copy) @@ -15,7 +15,11 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/platform_device.h> +#include <linux/serial.h> +#include <linux/serial_core.h> +#include <asm/arch/gpio.h> + #include <asm/hardware.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> @@ -31,6 +35,23 @@ static u8 ams_delta_latch1_reg; static u16 ams_delta_latch2_reg; +static struct uart_port delta_serial_ports[] = { + { + .membase = (char*)AMS_DELTA_MODEM_VIRT, // remapped locn + .mapbase = AMS_DELTA_MODEM_PHYS, + .irq = OMAP_GPIO_IRQ(2), + .flags = UPF_SKIP_TEST | + UPF_BOOT_AUTOCONF | + UPF_BUGGY_UART, /* not sure if the UART really is buggy, */ + /* but without this LSR safety check is engaged on 2nd open */ + .iotype = UPIO_MEM, + .regshift = 1, + .uartclk = AMS_DELTA_MODEM_CLK, + .line = AMS_DELTA_MODEM_LINE, + .type = PORT_16550A + } +}; + void ams_delta_latch1_write(u8 mask, u8 value) { ams_delta_latch1_reg &= ~mask; @@ -50,6 +71,8 @@ omap1_init_common_hw(); omap_init_irq(); omap_gpio_init(); + // set IRQ triggering for modem + set_irq_type(OMAP_GPIO_IRQ(2),IRQT_RISING); } static struct map_desc ams_delta_io_desc[] __initdata = { @@ -98,6 +121,45 @@ { OMAP_TAG_USB, &ams_delta_usb_config }, }; + +/*--------------------------------------------------------------------------- +** Purpose: +** +** Returns: Nothing. +** +*/ +void AMS_DELTA_MDM_Enable(__u8 state) +{ + if(state) + { + //Enable modem + printk("modem enable %lu\n\r", jiffies); + ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_NRESET, + AMS_DELTA_LATCH2_MODEM_NRESET); + ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_CODEC, + AMS_DELTA_LATCH2_MODEM_CODEC); + } + else + { + //Disable Modem + printk("modem disable %lu\n\r", jiffies); + ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_NRESET, 0); + ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_CODEC, 0); + } +} + +static void __ams_delta_modem_init(void) +{ + + printk("ams_delta_modem_init\n\r"); + + AMS_DELTA_MDM_Enable(1); + + if (early_serial_setup(&delta_serial_ports[0]) != 0) { + panic("Could not register ttyS1/Amstrad Modem!"); + } +} + static void __init ams_delta_init(void) { iotable_init(ams_delta_io_desc, ARRAY_SIZE(ams_delta_io_desc)); @@ -108,11 +170,13 @@ /* Clear latch2 (NAND, LCD, modem enable) */ ams_delta_latch2_write(~0, 0); + __ams_delta_modem_init(); } - static void __init ams_delta_map_io(void) { omap1_map_common_io(); + printk("ams_delta_map_io\n\r"); + } MACHINE_START(AMS_DELTA, "Amstrad E3 (Delta)") @@ -129,3 +193,5 @@ EXPORT_SYMBOL(ams_delta_latch1_write); EXPORT_SYMBOL(ams_delta_latch2_write); +EXPORT_SYMBOL(AMS_DELTA_MDM_Enable); + Index: linux-2.6/drivers/serial/8250.c =================================================================== --- linux-2.6/drivers/serial/8250.c (revision 374) +++ linux-2.6/drivers/serial/8250.c (working copy) @@ -1529,7 +1529,16 @@ serial_outp(up, UART_EFR, UART_EFR_ECB); serial_outp(up, UART_LCR, 0); } + +#ifdef CONFIG_MACH_AMS_DELTA + if (up->port.line == AMS_DELTA_MODEM_LINE) + { + extern void AMS_DELTA_MDM_Enable(__u8 state); + AMS_DELTA_MDM_Enable(1); + } +#endif + #ifdef CONFIG_SERIAL_8250_RSA /* * If this is an RSA port, see if we can kick it up to the @@ -1694,6 +1703,15 @@ serial_out(up, UART_LCR, serial_inp(up, UART_LCR) & ~UART_LCR_SBC); serial8250_clear_fifos(up); +#if defined(CONFIG_MACH_AMS_DELTA) + if (port->line == AMS_DELTA_MODEM_LINE) + { + extern void AMS_DELTA_MDM_Enable(__u8 state); + AMS_DELTA_MDM_Enable(0); // disable modem + } +#endif + + #ifdef CONFIG_SERIAL_8250_RSA /* * Reset the RSA board back to 115kbps compat mode.

2 2

GPE up and running (sort of)
by David Given 03 Apr '06

03 Apr '06

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 After spending *far* too long playing over the weekend, I've finally managed to get Familiar Linux up and running on the E3. The good news: it actually seems to work, as far as I've managed (Familiar really doesn't like running on the 2.6 kernel; it relies heavily on devfs, which is now deprecated, and all sorts of things require foul hacking to make run at all). The bad news: at idle it seems to eat nearly all the available memory (with under a megabyte utilised in buffers, too, so most of that is actual real code). Bootup is very, very slow, too (several minutes); but I'm not yet sure whether this is intrinsic or due to the USB 1 storage device crippling it. Once the shell has actually started up, it seems to be reasonably usable. Oh, yeah, as expected the screen doesn't play nice with the mouse pointer, which pretty much vanishes completely while moving. Things I need to try: another look to see if there are any device nodes missing, in an attempt to get the rest of the applications going (a lot of them fail to start with 'Unable to find entropy collection module' - --- missing /dev/random, perhaps?); seeing if I can backport the E3 patches to the last 2.6 kernel with devfs (dammit, why did they deprecate devfs? It's so *useful*); joining the Familiar mailing list and asking about udev support... Incidentally, I also got full Debian running. The ARM etch netinst images basically Just Work (you need to use etch because of the 2.6 kernel). The installer runs reasonably happily, despite complaining about low RAM, but is very, very slow. A number of times while validating packages I thought it had hung, but it came back to life again a few minutes later. Once installed, shell access is reasonably snappy and it idles with a reasonable amount of free memory. Aptitude in full-on graphical mode is only just usable. I'll try this again once I get an ethernet adaptor --- the most difficult bit was trying to shoehorn the CD image onto the same CF card as the installation filesystem. ...what's the current status of compressed writable filesystems on Linux? Do I have to resort to such aberrations as jffs2 over blkmtd, or is there anything better? Even with the E3's slow number-crunching abilities, I suspect that may still be faster than pushing uncompressed data of the USB link. - -- +- David Given --McQ-+ | dg(a)cowlark.com | "Those that repeat truisms, are also forced to | (dg(a)tao-group.com) | repeat them." --- Anonymous from Slashdot +- www.cowlark.com --+ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFEMPL0f9E0noFvlzgRAjcDAJ9bCHfdwflZL0cK08ebdIt/SZ4jIgCgmgul 04+Mx/XXPu+LB8o4tBj1LnA= =obNw -----END PGP SIGNATURE-----

1 0

RE: [E3-hacking] keypad layout
by Cliff Lawson 03 Apr '06

03 Apr '06

> -----Original Message----- > From: Tolly Nelson [mailto:tolly@bigredshed.co.uk] > > PS, why is the E3 used on The Apprentice? Unless you've hacked one up, > it can't do digital switching/multiplexing, so its not very useful for > office use, so Alan and his secretary use it?? It's known in the trade as "product placement" I think ;-) By the way someone ought to tell our in house PABX about the Gamma/Delta usage limitations in an office. I think about 100+ desks here have either a Gamma or a Delta on them and AFAIK they all work just fine?!? Cliff This e-mail and any attachments are confidential and intended exclusively for the addressee. If you are not the intended recipient please delete it from your system and notify the sender immediately. This message is attributed to the sender and may not necessarily reflect the views of Amstrad Plc or its subsidiaries. For further information on Amstrad Plc please visit our website: www.amstrad.com Amstrad Plc. Brentwood House 169 Kings Road Brentwood Essex CM14 4EF Registered in England : No. 955321

2 1

RE: [E3-hacking] OpenEmbedded and the E3
by Cliff Lawson 03 Apr '06

03 Apr '06

> -----Original Message----- > From: David Ford [mailto:e3@slarti.org.uk] > > I've also had a quick look at getting OPIE working, and have got it > building, however the colours don't work properly. It > certainly gets as > far as the calibration screen though. When we run OPIE re usually do it on top of a kernel where the video driver has been modified to do the more traditional 5:6:5 encoding of R:G:B rather than the actual ?:4:4:4 that we use. At the end of the day there are STILL just four bits for each colour in 5:6:5 so the bottom 1:2:1 are don't care bits as the passive mode LCD controller in the OMAP cannot go beyond 4 bit colour and, in fact, it isn't even 4,096 colours either as 1110 and 1111 are the same colour intensity - there's only 15 distinct levels for R, G and B so you actually get 3,375 colours. Cliff This e-mail and any attachments are confidential and intended exclusively for the addressee. If you are not the intended recipient please delete it from your system and notify the sender immediately. This message is attributed to the sender and may not necessarily reflect the views of Amstrad Plc or its subsidiaries. For further information on Amstrad Plc please visit our website: www.amstrad.com Amstrad Plc. Brentwood House 169 Kings Road Brentwood Essex CM14 4EF Registered in England : No. 955321

1 0

RE: [E3-hacking] keypad layout
by Cliff Lawson 03 Apr '06

03 Apr '06

> -----Original Message----- > From: Jasmine Strong [mailto:jasmine@electronpusher.org] > > ...hints for those of us not in the UK? www.amstrad.com/amsface :-) Cliff This e-mail and any attachments are confidential and intended exclusively for the addressee. If you are not the intended recipient please delete it from your system and notify the sender immediately. This message is attributed to the sender and may not necessarily reflect the views of Amstrad Plc or its subsidiaries. For further information on Amstrad Plc please visit our website: www.amstrad.com Amstrad Plc. Brentwood House 169 Kings Road Brentwood Essex CM14 4EF Registered in England : No. 955321

1 0

OpenEmbedded and the E3
by David Ford 01 Apr '06

01 Apr '06

Hello, I've made a first attempt at getting OpenEmbedded working on the E3. I've got to the point where it will boot into a ramdisk, and I can get a shell via both Serial and the console. Dropbear sshd also seems to work. Patches, and files that have been built are at http://hu.gs/pub/E3 I've also had a quick look at getting OPIE working, and have got it building, however the colours don't work properly. It certainly gets as far as the calibration screen though. Thanks David

1 1

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

e3-hacking April 2006